TW424025B - A joined metal member and a method and an apparatus for fabricating the same - Google Patents

Abstract

The present invention provides a method for joining two metal members into a joined metal member. The method comprise steps of; applying a brazing material having a lower melting point than both the members on the surface of a first metal member and heating them to form a brazing material on said surface and a braze-diffusion layer under the brazing material in the surface area of the first member; and, then, pressing the first and another second metal members between which the brazing material is interposed during heating at a higher temperature than said melting point of the brazing material to squeeze the molten brazing material out between both the contact surfaces of both the metal members, therefor the two metal members being joined by the braze diffusion layers formed in both the surfaces into the joined metal member. Particularly, the first metal member may comprise an iron-based alloy and the second metal members may comprise an aluminum-based alloy, and the brazing material may be zinc-containing material such as Zn-Al eutectic alloy.

Description

02 5 A7 Five,

Description of the invention (i [Technical Field of the Invention] The present invention is a description of a joint all-metal component, a second metal component, a liquid metal component, and a conventional technology of the department, which are synthesized by the first metal diffusion joint. The following method is used to connect the seat to the steam and to absorb and reduce the opening of the exhaust port. It is a part of indirect human history, 1 a. As will know. Wan Qu 'has There is a method using hot jackets. As shown in Japanese Unexamined Patent Publication No. 8 _ 1 0 0 7 0 1, there is a method of combining a valve seat with an A1 series cylinder head. @ Sasa 以 A〗 -Zn series A method of soldering with a solder and a fluoride-based flux has been proposed. For example, as shown in Japanese Patent Application Laid-Open No. 58_ 1 3 4 8 1, there is already a resistance heated by resistance welding using two materials to join the faces. Method B for joining metal parts by welding. This—resistance welding has been shown in Japanese Unexamined Patent Publication No. 6-5SH6 by reducing immersion of the metal in the hole of the valve seat made of sintered material to reduce it. The heat generation in the sintered material increases the heat generation in the joint surface, or Printed in Japanese Unexamined Patent Application Publication No. 8_27〇4 99, printed by the Consumers ’Cooperative of the Central Bureau of Standards, a film is formed on the surface of the valve seat I, and this film is melted when it is combined with the cylinder head body. For example, As shown in the EJ Benkokai 8_2 001 4 8 bulletin, 'The industry has proposed a method in which a valve seat and a cylinder head body are formed under a plastic deformation layer on a joint surface of the cylinder head body for solid phase diffusion bonding (pressure The bonding reaction), in which a molten reaction layer is not formed. That is, according to this solid-phase diffusion bonding method, the Cu coating formed on the surface of the valve seat and the cylinder head are used in the bonding process. China National Standard (CNS) A4 Specification (210X297 Public Transformer) 厶 c 4 Ο 2 5 4 Α7 β7 ——- 5. Description of the Invention (7) A eutectic alloy layer is formed between the materials, and the eutectic alloy layer will change into a liquid At the time of the phase, 'it is discharged from the joint surface. II% * < ί ¥ Η page · Another' For example, as proposed in Japanese Patent Application Laid-Open No. 6 2-1 9 9 2 60, it is proposed between two metal bases. The joints are interposed with solder and added The base material is made to react with the base material to form an alloy layer, and at the same time, the unreacted solder is discharged from the joint surface to the outside while being pressurized. [Solutions of the Invention] Order, however, as shown in the above conventional example, ~ The method of interface between metal parts, in order to surely prevent the metal parts from falling off, and to give the endurance of tightening when the heat-resistant sleeve is given, it is necessary to make the metal parts larger. Therefore, the wall thickness or width of the valve seat at the cylinder head Increased so that there is a limit when the interval between the suction and exhaust ports is narrowed to increase the diameter of the throat. In addition, there is a thermal insulation layer between the valve seat and the cylinder head body, so the thermal conductivity is reduced, making it impossible to It is a problem to effectively reduce the temperature near the valve and the valve seat. It's just a method of joining metal parts by welding or resistance welding. Although the thermal conductivity between the two parts can be improved, the joint strength is basically low, and the solder for A 丨 series castings has a low melting point. The low heat resistance is printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, which is difficult to be used for the joint of the valve seat and the cylinder head. In particular, the solder-foot bonding method requires long-term heating in the furnace. Therefore, it is impossible to correspond in series, and the heat treatment effect of the A1 series parts which have been heat-treated beforehand is lost. On the other hand, according to the above-mentioned solid phase diffusion bonding method, compared with the bonding method using a heat jacket, the valve seat can be particularly miniaturized, and the freedom of engine design is improved, which is its advantage, but because For the paper scale of solid phase diffusion bonding, the Chinese national standard (CNS) A4% i ^ '210 X 297 ^ 5 " 4 2 4 02 5 -ti A7 «7 V .. Description of the invention (therefore, especially in In the joining of the A1 series cylinder head body and the Fe series cylinder head body, it is necessary to take the opposite action of suppressing the occurrence and diffusion of Fe-Al type brittle intermetallic compounds and the diffusion of Fe and A1 atoms, and the joining conditions must be strictly controlled. In addition, there are limits to the improvement of joint strength. In addition, according to the method of reacting solder with the base material to form an alloy layer and discharging unreacted solder from the joint surface, the two base materials are interposed. The alloy layers respectively formed on the two base materials are bonded 'so that an improvement in bonding strength can be achieved. The dry material is prepared from a eutectic group with a significantly deviated composition', then left. In the initial stage, only low-melting components ( Eutectic component) is melted and discharged, The high-melting-point component remains, so in order to completely melt the solder, there must be a lot of heat. In this case, the joining time increases, and the joint surface of the base material is softened. Because of the softening of the mass, even if the pressure is increased and the damage is caused The effect of the oxide film on the face is reduced, and the discharge effect of the material is also reduced. In this way, the above-mentioned solid-phase diffusion bonding method is the same, and the limit of the strength and the bonding is the same as the above. The present invention has The completion of the development of these points is to provide a method for joining the brother-metal part and the third metal part to the printing method used by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, without the need to The joining conditions are strictly managed, and joining metal parts with high joining strength that is more stable than conventional objects can be obtained in a short time. [Solution to the Problem] In order to achieve the above-mentioned object, the present invention is to combine the first metal part and the second metal part. A metal part is formed by welding with a lower melting point than the two metal part and consisting of a eutectic composition with the second metal part or a composition near the eutectic composition. The first metal -6 - μ China's Cheng scale applicable national standards (CNS> Α4 specification 424 025

V. Description of the Invention (4) The solder formed by diffusion diffusion layer printed by the Consumer Cooperatives of the Central Government Bureau of the Ministry of Economic Affairs and the fusion of the high melting point of the solder by the ratio of the composition of the second metal component in the solder = evening. In the expanded state with the second metal component, it is used for liquid phase diffusion bonding. S Specifically, the invention of the first patent application scope is a bonding method for bonding the first metal component with the second metal component. The above method is in advance on the joint surface of the first metal part, the melting point is lower than the melting point of the two metal parts ^ formed by the diffusion of the first metal part with the second metal part The solder layer heats and presses the first metal part and the second metal part P ′ at a temperature higher than the solder bump between the two metal parts, so that the proportion of the second metal part component in the material is increased. Form a diffusion layer with high solder and melting point solder and the second metal part, and discharge the molten solder between the joint parts of the two metal parts, and use one side for liquid-phase bonding through the above-mentioned one diffusion layer. Therefore, because the solder is a eutectic composition or a composition in the vicinity thereof, if the eutectic line changes from the solid phase to the liquid phase and diffuses to the second metal member side, it forms a diffusion layer with the first metal member. By this-diffusion, the solder system has a high melting point and solidifies, and the unreacted solder in the molten state is discharged due to pressure, and the first and second metal parts are in a liquid phase diffusion state with two diffusion layers in between. At this time, the solder is melted at the lowest temperature. Therefore, the solder can be thermally melted in a short time with minimal heat input. This can shorten the bonding time. Furthermore, it can also suppress the softening of the second metal part. By applying a high pressure, the oxide film on the surface of the second metal member is destroyed, and the oxide film, dirt, and the like can be reliably combined with the solder.

(Please read the precautions on the back before writing this page) -Installation, 1T .HI ml 1-- I. · Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 424025 A7 f7 5. Invention Description (5 The diffusion layer can be omitted Impurities are directly bonded, and the bonding can be assured. In the bonding process, due to the lower heat input than solid phase diffusion, the connection can be improved: 2: 'Genesis = even A short time A $ 1 ° female steep, while' only borrowing Setting the pressure or heating reading can remove Ping Weirong and remove it from the range of conditions of the joint strength. ^ This is the same as that of the solder. The solder is spotted by forming a layer with the second metal part. The I point of the bonding layer is regarded as a “operation that can compete with each other, so that the #joint strength is stable and the bonding metal parts have better heat resistance than the solder (solder). :: Invention of the second scope of the patent, In the invention in the scope of the patent application, the temperature above the melting point of the solder is heated by the divergence accompanying the conduction between the first and second metal parts. ..., * Thus, the solder can be heated by the resistance between the metal parts. Easily add A Po Rong. Is' may Easy to obtain a simple and specific heating method. The invention of the patent application No. 3 of the patent application is the invention of the second or the second patent application. The first metal part is composed of & series materials, and the second metal is The component is made of AU material, and the solder is made of ^ material. By the invention, the solder of 'Z η' can easily form the Fe-Zn diffusion layer with the first-metal component of the F ^, respectively, and The second metal part of the series forms an Al-Zn diffusion layer. In addition, because of the bonding between the two diffusion layers, the formation of a brittle intermetallic compound such as Fe-Al can be effectively prevented. Therefore, the most suitable The joining method of the first invention in the scope of patent application = the most suitable material combination.

A7 tl 424 025 ^ -------- 5. Description of the invention (6 The invention in the fourth scope of the patent application belongs to the invention in the third scope of the patent scope. The solder is 92 ~ 98% by weight based on Zn. It is composed of 211_eight 1 series alloy. By this, the solder can be melted at 400X: below, which can prevent the deformation of the first metal part of the Bu series, and at the same time can prevent the second metal part of the A1 series from melting or softening. In this way, When the Fe-based metal part and the A1-based metal part are sufficiently joined, a concrete material having a low melting point and a simple processing solder can be easily obtained. The invention in the scope of patent application No. 5 belongs to the scope of patent application No. 4 In the invention, the solder is made of 211_eight 丨 eutectic alloy with 95% by weight of Zn. In this way, the melting point of the solder can be set to be the lowest, and the solder most suitable for joining the metal parts of A and A1 series can be obtained. The invention of item 6 of the patent claim is the item of item 5 of the patent claim: the invention of the item "the first metal part is a sintered material. By this, the first metal part can be simply manufactured into Certain shape. The scope of patent application The month of the 7th issue is the 6th invention in the patent application park. The first metal part is a sintered forged material. By this, the sintered hole in the metal part will be made. Crushing, therefore, when the two metal parts are discharged from the solder under pressure, a part of the force will not be expected to collapse the above-mentioned holes, but the pressing force is directly used for the discharge of the solder ^ Yes, „may Efficient discharge: The joint strength of metal parts is further improved. ° The invention in the eighth patent application belongs to the invention of the patent application, the inside of the first metal part, '° forms a solder layer and diffuses Hemp scale Shicai Guanjia County (CNS) A4 specification (2 丨 〇 > < 297 public shame-please read the note of δ first

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Printed by the Consumers Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs 4 2 4 025 wi Printed by the Consumers Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (7;) Before the first layer, it is pre-soaked with high-electricity-transmitting materials . With this invention, rb #in the interior of the ancient pieces: the conductivity material is immersed in the -metal part ^ ’to obtain the effect of forging ㈣, and at the same time:. ：： Suppresses the heat generation inside the-metal part and effectively melts the solder. \: The bonding strength of the metal part can be effectively improved. In the invention of Ming Dynasty No. 9 in the scope of the patent application, "道" is used in the patent application scope of the 8th category. The material department uses Cu-based materials. With this, low cost and high conductivity can be easily obtained. The specific material of the rate shirt .: Please invent the item No. Π) of the patent 'is in the scope of the patent application No. 9 member Ren Ye "In the invention, on the first-metal parts, the diffusion layer of solder and the first metal Shao The thickness is in the following way to shape the diffusion layer. By this means, the excessive diffusion of the material and the metal component can be suppressed, and the proportion of the first metal component in the diffusion layer can be prevented from increasing so much that the solder The I composition has greatly deviated from the eutectic composition. In addition, this can also prevent a large number of solders from deviating from the eutectic composition. In this way, the composition of the solder can be maintained at or near the eutectic composition. Therefore, ' The destruction effect of the oxide coating on the surface of the second metal part or the discharge effect of the flat material can be reliably obtained, so that the bonding strength of the two metal parts is further improved. The invention in the first item of the patent application scope belongs to the scope of patent application In the invention of Item ι, the surface portion of the first metal member in the solder bath is coated with solder to impart super-jin vibration, thereby forming a final material layer and the above solder on the first metal member. And the diffusion layer of the first metal part. By this, using the effect of holes originating from ultrasonic waves, please read the note on the back of the first metal part first

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Page order d24 025 V. Description of the invention (8) Shao Yi's oxide coating or coating is damaged. Therefore, the solder can be more reliably diffused than the method of rubbing the solder on the surface of the first metal part through such mechanical friction. To the first metal component side. In addition, the melt plating method, which is only immersed in a solder bath, requires a long time to reliably form a solder layer and a diffusion layer on the first metal member. It is not easy to form the diffusion layer to 1 μM or less. The present invention can reliably form a solder layer and a diffusion layer in a short time, so the invention of the tenth patent application can be surely realized. In addition, the second process using the flux as the # to remove the flux is not necessary. In this way, a bonded metal member having particularly high bonding strength can be obtained in a simple manner. The invention of item 12 in the scope of patent application is the invention in any of the items 1 to 11 in the scope of patent application. When the first metal member and the second metal member are liquid-phase diffusion bonded, the second metal member is the second metal member. The joints make plastic flow. As a result, the oxide film on the surface of the second metal component is effectively destroyed and discharged from the bonding surface. Therefore, the solder can be reliably diffused to the side of the second metal component, and there is no need to protect the surface of the second metal component in particular. On the other hand, the plastic flow of the second metal part can be easily implemented by applying pressure when the first and second metal parts are pressurized, and no special method is required. Therefore, a diffusion layer between the solder and the second metal member can be reliably formed in a simple manner, and the bonding strength of the metal member can be further improved. The invention of item 13 in the scope of the patent application is for the joining method of joining a first metal part made of a Fe-based material and a second metal part made of an A1-based material. 11-This paper size applies the Chinese National Standard (CNS) A4 specification (2I0X297 Gongqing 424 025 4 5) Description of the invention (9 Printed by the Consumer Cooperatives of the Central Procurement Bureau of the Ministry of Economic Affairs This method is pre-printed on the joint surface of the first metal part In the above, a solder composed of 95 wt% &lt; Zη · A1 eutectic alloy and the above-mentioned metal component &lt; diffusion layer are formed in advance, and then the previous and second metal components are accompanied by The electric current between the two metal parts is generated and pressurized, so that the proportion of the A1 component in the solder is increased, and the diffusion layer of the solder and the second metal part is melted to form a melting point. The solder is discharged from the joining surface of the two metal parts, which is the liquid-phase diffusion joining of the two diffusion layers. A By this—invention, the Fe-based metal can be easily and surely joined with the magic-based metal part, and the joining The strength can be increased steadily and the heat resistance can be increased above the solder. Invention No. 14 of the scope of the patent application is an invention of a joint metal part that is a combination of the first part of the metal part and the first part of the metal part. It is clear that the first metal component and the second metal component are lower in dazzling point than the above two components through the joint surface formed on the first metal component and have a eutectic composition with the second metal component or The nearby composition <diffusion I of solder and the first metal part, and the melting and diffusion of the solder on the joint surface of the second metal part through the increase of the proportion of the second metal part in the solder to make the solder high-dazzling In the state of the diffusion layer of the solder and the second metal component, liquid-phase diffusion bonding is performed. By this, the same effect as that of the invention in the scope of the patent claim! Can be obtained. In the patent application, the scope of the second invention is the first metal component is made of material, the second metal component is made of material, and the solder is made of &amp; system material.

(Please read the notes on the back first ^^; write this summer) Pack. * -LeJIn ί I- i HI 11 ---

4 02 5 ^ V. Description of the invention (K A7 S7 Printed by the Ministry of Economic Affairs, the Central Bureau of Standards, and the Bayer Consumer Cooperative) ° This is the same as the invention in the scope of patent application No. 3, which can be used as the 14th in the scope of patent application The most suitable combination of materials for joining metal parts of the invention. The invention in the 16th scope of the patent application is the invention in the i5th scope of the patent application. The solder is made of Zn-Al with 92 to 98% by weight of Zn. It is made of alloy. In this way, it can exert the same function and effect as the 4th invention in the scope of patent application. Zn is a 95% by weight Zn-Al eutectic alloy. In this way, the same effect as the fifth invention in the scope of patent application can be obtained. The eighteenth invention in the scope of patent application is a patent application In Fan Yuan's invention of any one of items lj to 17, the first metal part is a sintered material in which a homogeneous t-conducting material is immersed in the inside. According to this invention, the eighth invention of the scope of patent application can be obtained. The same effect. Item 19 of the scope of patent application The invention belongs to the patent application i 8 f invention, in which the first metal part is a sintered forged material. In this way, the same effect as the seventh invention in the patent application scope can be obtained. The patent application scope is 20 The invention of item 'is in the scope of application for patent No. i 8 or 19', and the Sino-Arab private material division is Cu-based material. In this way, the same effect as the invention in scope of patent application No. 9 can be obtained. The invention of Fanyuan No. 21 is the thickness of the diffusion layer of the solder and the first metal component in the invention of any one of the patent claims No. 14 to 20, which is set to less than 1 μm. The same as the patent application of 13-k paper scale thorn t family standard (CNTS) A4 specification (A7 tl 4 24 02 5 -i V. Description of the invention (the same effect as the tenth invention in the u range) The second scope of the patent application The invention is the invention of any one of claims 14 to 21 in the patent application park. The first metal part is the valve seat of the engine. The second metal part is the cylinder head body. The joining metal part is the valve seat. Cylinder head body suction and exhaust opening The cylinder head formed by the peripheral part. With this invention, the valve seat can be miniaturized more than the method of using a heat jacket. Therefore, the interval between the suction and exhaust-air ports can be reduced, or the throat can be reduced. Ίί »· The diameter is increased. It can also increase the thermal conductivity near the valve without generating an insulation layer. In addition, the cooling water passage between the suction and exhaust ports can be closer to the valve seat side, so it can effectively To reduce the temperature near the valve seat. Furthermore, even if a hot-wire ignition plug or an injector is arranged between the intake and exhaust ports, the thickness between them can be fully ensured. Therefore, the performance and reliability of the engine can be improved , Can seek the effective utilization of the 14th to 2th inventions in the scope of patent application. The invention with the scope of patent application No. 23 is the invention between any one of the scope of patent applications Nos. 14 to 22, which is between the diffusion layer of the solder and the first metal part and the diffusion layer of the solder and the second metal part. At least a part of the Ministry of Economic Affairs Central Standards Bureau printed on the consumer cooperative to form the alloy department of the two diffusion layer. In this way, the combination of the two diffusion layers will be further strengthened by the alloy portion, which can further improve the joint strength. ... Shen :: The invention of item 24 of the scope is directed to a joining metal member formed by joining a member made of a Bu material and a second metal member made of an Ai material. -Yu Yu Second !: The metal part and the second metal part are connected to form a .. 4 pieces and 211 which joins the face is 95 weight {cnsTmS- -14-(210X 297 mm)

The diffusion layer of the solder composed of Gongming alloy and the first metal member, and the solder formed by melting and diffusing the high melting point of the solder by increasing the amount of the solder 卞 A1 on the joint surface of the second metal member. In the state of the diffusion layer with the second metal member, liquid-phase diffusion bonding is performed. In this way, the same effect as the third invention in the scope of patent application can be obtained. [Embodiment of the invention] (Embodiment 1) FIG. 1 is a main part of the fly cylinder head 1 of the engine of the first embodiment of the present invention, which is rarely engaged with metal parts. This cylinder head 1 is used as the second metal part. Zhi> The four suction and exhaust ports 2 b, 2 b _ ·. At the flying red head body 2 have openings around the edge, that is, the positions where the valve abuts, and the slightly annular valve seats 3, 3 (the A metal part). Each of the above-mentioned intake and exhaust 2b &lt; the opening peripheral portion is arranged in a substantially square shape from a side view of the cylinder head, and each opening peripheral portion serves as a joint surface portion 2a with each valve seat 3. Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. The inner peripheral surface of each valve seat 3 is used as the valve abutment surface 3 ^, and it is formed into a tapered shape that decreases in diameter along the shape above the valve. In addition, the outer peripheral surface of each valve seat 3 is a first joint surface 3 & with the cylinder head body 2 and is covered by the joint surface 2a of the cylinder head body 2 and is formed in the same manner as the inner peripheral surface. Fine. In addition, the upper surface portion of each valve seat 3 and the second joint surface portion 3b of the cylinder head body 2 are inclined upward toward the inner peripheral side. Each of the valve seats 3 is a sintered material composed of Fe-based materials, and a Cu-based material as a high-conductivity material is immersed in the inside. The first and second joint surfaces, 3b, of each valve seat 3 and the cylinder head body 2 are schematically represented as shown in FIG. 2 'eutectic composition composed of Z η-A1 [about 9 5 7. 里 里 / 0 &lt; Zn ingredients_; ___- 15-This paper size applies to Chinese national standards (CNS M4 specification (2 丨 0 &gt; &297; 297 mm) &quot; -------- Ministry of Economic Affairs Printed by the Consumer Standards of the Central Bureau of Standards 4 2 4 025 ** A7 V. Description of the invention (13) and the eutectic composition of the A1 component (the material component of the cylinder head body 2 described later) The iron-side molten reaction layer 5 of the diffusion layer between the solder 'and the valve seat 3. That is,' this iron-side molten reaction layer 5 is a fe formed by diffusing the Zn component of the solder to the valve seat 3 side -ζ η. On the other hand, the above-mentioned cylinder head body 2 is made of A1 series material, and the joint surface 2 a of the cylinder head body 2 and each valve seat 3 is formed by the above solder and the The aluminum-side molten reaction layer 6 of the diffusion layer between the cylinder head body 2. That is, the aluminum-side molten reaction shoulder 6 is formed by melting the Zn component of the solder in a molten state. The lower liquid phase is diffused to the A1 _ Z η formed on the side of the cylinder head body 2. Also, the melting point of the solder is lower than the melting points of the valve seats 3 and the cylinder head body 2. The above valve seats 3 and The cylinder head body 2 is liquid-phase diffusion bonded via the iron-side molten reaction layer 5 and the aluminum-side molten reaction layer 6. The thickness of the iron-side molten reaction layer 5 is set to 1 μm or less. The iron-side molten reaction layer The thickness of 5 is set to 1 μm or less. The total thickness of the above-mentioned iron-side molten reaction layer 5 and the aluminum-side molten reaction layer 6 is preferably about 0.3 to 0 μm. In addition, the iron-side molten reaction layer 5 and the aluminum side The alloys of the two molten reaction layers 5 and 6 are formed at least in a part of the molten reaction layers 6 (approximately all in practical terms). The composition of this alloy part is A1: 5 ~ 1. % ， Z η: Fishing 10%, F e _ The remaining two melt reaction layers, 5, 6 and the alloy part are composed of a gentle slope as a whole. In the steam head of the above composition! In the,- Each valve seat 3 is joined to each suction and exhaust port peripheral edge portion (joining surface 2 a) of the cylinder head body 2 to make the cylinder. The method of 1 is described below (also, in the following manufacturing process, the cylinder head — _________- 16-_ This paper size applies to the Chinese National Standard (CNS) A4 specification (21〇 × 297 mm) (please read the back first) Please note this page, please fill in this page) Order 424 02 5 4 V. Description of the invention (14) The body 2 and the valve seat 3 are upside down. First, the valve seat 3 is made by sintering the powder of the Fe ^ molten reaction layer. At this time, 'the valve seat 3 is shown in FIG. 3' in order to be able to withstand the connection between the valve seat 3 and the cylinder head body. The Gane force of the time is thicker on the inner peripheral side and the upper side (lower side in FIG. 1). That is, at this stage, the joint face is not formed, the inner peripheral surface is formed to extend straight upward, and the upper surface is formed to be slightly horizontal. Furthermore, the tapered angle of the first joint surface portion 3a with the cylinder head body 2 (Fig. ^ M is about 0.52 rad (30;), and the inclination angle of the second joint surface portion 3b (Fig. J, Θ 2 ), The condition is formed to about 0.35 rad (20.). That is, the tapered angle 0 i of the first joint surface 3a is too small, and the valve seat 3 is buried in the rL cylinder. It is easy, but the oxide film destruction effect on the joint face & of the cylinder head body 2 will be reduced. Conversely, if 0 i is too large, the valve seat 3 will be difficult to embed and the outer diameter of the valve seat 3 will become too large, and The gap between the two suction and exhaust ports 2b and 2b cannot be reduced. Therefore, it is set to about 0.52 rad (30.). After making a ring that is approximately the same as k in the valve seat 3 on the upper side, the ring is placed on the sintered valve seat 3 to form a ring ~, and then "to be melted in a heating furnace", then the valve seat 3 The Cu immersion reaction layer is immersed in the inside. Then, all the surface bodies of the valve seat 3 including the first and second joint surfaces 3a and 3b are applied in advance. In order to prevent the formation of an oxide film (about 2 μηι), as shown in FIG. 5 (a), the first and first surfaces of the valve seat 3 are connected to the D surface. 卩 〇a, 3b The solder layer 7 is formed by melting the respective application layers 5 through the iron side. At this time, the thickness of the iron side molten reaction layer 5 on the valve seat 3 is set to a paper size applicable to China National Standards (CNS) A4 specifications (210X 297 meals) A7% 1 15 4 2 4 02 5 "5. Description of the invention (less than 1 μm. In this way, in order to form the iron-side molten reaction layer 5 and the solder layer 7 on the valve seat 3, the valve seat in the solder bath The surface portion of 3 is covered with a solder by applying ultrasonic vibration (ultrasonic plating) ^, i.e. β is as shown in FIG. 6. One end of the vibration plate 11 is mounted on the ultrasonic oscillator 12. The base 3 is placed on the other end of the vibration plate 11 and is immersed in the solder bath 14 in the bottomed container 13. In this state, if the ultrasonic vibration gaining machine 1 2 is used, The ultrasonic vibration is imparted to the valve seat 3 through the vibrating plate 11. The cavity action caused by the ultrasonic wave is caused by the 〇11 plating or some on the surface of the seat 3. The oxide film formed may be damaged, so that the Zn component of the solder diffuses to the valve seat 3 side, and an iron-side molten reaction layer 5 composed of Fe-Zti is formed, and solder is formed on the surface side of the iron-side molten reaction layer 5. Layer 7. This method can more reliably and easily form the iron-side molten reaction layer 5 than the method using mechanical friction (friction solder method) where a solder bar is attached to the surface of the valve seat 3. For the plating conditions, the temperature of the bath was set to 400 ° C, the ultrasonic output was set to 400 W ', and the ultrasonic vibration application time was set to 20 seconds. In addition, although the method of destroying the oxide film by using a flux or the like can be used, the valve seat 3 can be immersed in the solder bath 14 by the hot-dip plating method to form the iron-side molten reaction layer 5 and the solder layer 7, but it is still ultrasonically plated The deposition method can relatively easily and surely set the thickness of the iron-side molten reaction layer 5 to i μm or less. Next, the valve seat 3 is joined to the suction and exhaust port 2 &amp; opening peripheral portion of the cylinder head body 2 made by the method, that is, the joint surface 2 &amp; with the valve seat 3. At this time, Ά the joint surface 2 a of the cylinder head body 2 is as shown in FIG. 4 (a), and the shape at the end of the joint (the same shape as the first and second joint surfaces 3 &amp; of Shan of the valve seat 3) Different, with a tapering angle of about 0.79 rad (45.). -18-This paper scale is applicable to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before writing this page) Order printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economy A7 β7 4 24 02 5 ti V. Description of the invention (16) In order to join the valve seat 3 to the joint surface 2a of the cylinder head body 2, as shown in FIG. 7, a modified type of a commercially available projection welding type welding machine is used.接 装置 20。 The bonding device 20. The joining device 20 has a substantially U-shaped support body 21, and the upper and lower horizontal portions 21a, 21b of the support body 21 are formed in a cantilever shape and a vertical portion supported by only one side &lt; vertical portion 2 1 0. 2) The opposite side of c is formed as an opening. The lower part of the horizontal part 21a on the upper side of the support body 21 is provided with a pressure cylinder 22, and a pressure roller 23 mounted on the pressure cylinder 22 is provided on the lower side of the pressure cylinder 22, and can be used in the coaxial direction with the pressure rod The upper electrode 24 made of a slightly cylindrical Cu is moved up and down. On the other hand, the upper side of the above-mentioned lower horizontal portion 2 1 B is provided with a lower electrode 2 5 made of Cu that opposes the upper side via the mobile station 2 7 through the mobile station 2 7. On the obliquely inclined upper surface, the A-cylinder head body 2 can be mounted on the upper side of the cylinder head body 2 with its engaging surface 2 a. The inclination of the horizontal position of the above-mentioned mobile stage 27 relative to the lower horizontal portion 2 丨 B and the upper side of the lower electrode 25 can be adjusted, and the central axis of the joint c »face 2A of the valve seat 3 can be adjusted. It is in a staggered direction and substantially coincides with the central axis of the upper electrode 24. The above-mentioned upper and lower electrodes 2 4 and 25 are printed on the consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. They are respectively connected to the power supply 26 stored in the staggered portion 21 c of the support body 21, and the valve seat 3 is loaded. In a state where the joint surface 2 a of the cylinder head body 2 is provided on the lower side of the electrode 2, the upper electrode 2 4 is in contact with the upper surface of the valve seat 3, and the valve seat 3 and the cylinder head body 2 are pressed against the cylinder 2 2. Under pressure, if the above-mentioned welding power source 2 6 is turned on under pressure, current will flow from the valve seat 3 to the cylinder head body 2 β, and the upper electrode 2 4 abuts on the lower surface of the upper surface of the valve seat 3, As shown in Fig. 8 (a) and (b), it indicates that it is on the opposite side from the straight part 21c of the supporting body 21 (the size of the paper supporting the body applies the Chinese National Standard (CNS) A4 specification ('210X 297 mm) 4 24 02 5 ^ V. Description of the invention (17) The opening side of 21) is formed with a notch portion as a non-energizing portion. "The cylinder head body 2 is placed on the upper side of the electrode 5 below the joint device 20, The mobile stage is adjusted so that the central axis of the joint surface portion 2a of the joint holder 3 substantially coincides with the upper electrode 24. After the inclination of the horizontal position and the upper surface of the lower electrode 25 is adjusted, a valve seat 3 is placed on the joint surface 2a. At this time, as shown in FIG. The corners of 3 and 3b are kept in contact with the joint surface 2a of the cylinder head body 2. Then, the upper electrode 24 is moved to the lower side by the action of the pressure cylinder 22 and abuts against the valve seat. Above 3, from this state, pressurize the seat 3 and the cylinder head body 2. This pressure should be about 2942 0N (3000 kgf). Then keep it as shown in Figure 9 This pressure: 15 seconds after the start of the pressurization, the welding power source 26 is turned on, and the resistor is connected to the valve seat 3 and the steam-red head body 2 with a resistor, which is used as a solder spot in the solder layer 7. The heating at the above temperature makes the job melt. This current value should be about 70 k A. Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs at this time, because the solder is made up of about 95% by weight of ^ ingredients and about 5% by weight of the eutectic composition of the A1 component, therefore, its melting point is as shown in &quot; extremely low to about 38 (TC, since the start of the electricity, it immediately reached the eutectic line together. In addition-as shown in FIG. 4 (b), by pressing, the first joint surface 3a and the second joint surface of the valve seat 3) The corner part makes the joint surface 2 of the cylinder head to flow downwardly; the valve seat 3 is buried in the cylinder head body 2. Thereby, the oxide film on the joint surface 2a of the steam head body 2 is destroyed, and this The Zn component of the molten solder diffuses to the central side of the cylinder head. _- __- 20-This paper size is applicable to the Chinese National Standard (CNS) A4 specification (_210 × 2ϋseam) 424 025 »4 Central Bureau of Standards, Ministry of Economic Affairs Printed by employee consumer cooperative A 7 — ___g? V. Description of the invention (18) An aluminum-side molten reaction layer 6 composed of Al-Zn is formed (see FIG. 5 (b)). As a result of this diffusion, the proportion of the Zn component of the solder decreases (the proportion of the eight components increases), and therefore, the melting point can be increased to 5000. Above 〇 degree (see Figure 1 1), at the same time, the unreacted solder in the molten state is shown in FIG. 5 (c), from the first and second joint surfaces 3a, 3b of the valve seat 3 and the cylinder head body 2 The bonding surface portion 2a is discharged from the oxide film or dirt by applying pressure. Therefore, without interposing the solder layer 7, the iron-side molten reaction layer 5 and the aluminum-side molten reaction layer 6 are directly bonded ′ between the two molten reaction layers 5 and 6, and the diffusion is further promoted. Furthermore, the formation of a brittle intermetallic compound such as Fe_A1 can be effectively prevented by interposing the two molten reaction layers 5, 6 '. Further, almost all of the portions between the iron-side molten reaction layer 5 and the aluminum-side molten reaction layer 6 'are formed with alloy portions of the two molten reaction layers 5,6. Therefore, the valve seat 3 and the cylinder head body 2 can be used for liquid-phase diffusion bonding via the iron-side molten reaction layer 5 and the aluminum-side molten reaction layer 6 in a short time, which can limit the input heat for melting the metallurgical branch to a minimum. Furthermore, since the iron-side molten reaction layer 5 and the solder layer 7 are formed on the holder 3 so that the thickness of the iron-side molten reaction layer 5 is 1 μm or less by means of an ultrasonic secondary application, the melting reaction on the iron side is reversed. -Increasing the proportion of the 'Fe component in the stress layer 5 can prevent the composition of the solder from largely deviating from the eutectic composition or its nearby composition, and at the same time, prevent the solder from deviating from the eutectic composition or its nearby composition from increasing. Therefore, the coarseness of the solder can be maintained in the eutectic composition or a composition near the eutectic composition in advance. In this way, less input heat can be used for joining. Therefore, the deformation of the spacer 3 or the softening of the main body 2 can be suppressed, and the destruction effect of the oxide film or the discharge effect of the binding material can be effectively improved. In this way, the strength of the combination of the valve seat 3 and the valve seat body 2 can be _______- 21 -_ This paper size depends on the towel _ home standard (CNS) / \ specifications (210X297 public Chu) ------: (please first (Read the notes on the back page)

-1Τ &gt; 4 2. Ο 2 5 I 丨, I I ,, V. Description of the invention (19

-Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Education. The material is diffused to the cylinder head body 2 by the welding department, and the melting point of the material is as high as 500. (^ Li, more than degree, so after joining, it can have a heat resistance higher than the melting point of the foot welding department. 再 Furthermore, because the Cu-based material with high conductivity is impregnated inside the valve seat 3 ' Therefore, the pores in the sintered material are filled with Cu material, and the application of 4-force will not be used to crush the above pores, and the entire force of the pressure will be used directly to the steam & head body 2 The plastic flow of the joint surface and the discharge of solder. The m can suppress the internal heating of the valve seat 3 to effectively melt the solder. Ν and γ support the upper and lower horizontal portions 2 丨 a, 2 丨 b of the body 2 1 as Cantilever shape, by the deflection of the upper and lower horizontal portions 21a, 21b, the pressing force becomes lower on the opening side of the support body 21, so that each joint surface 2a, 3a, 3b can be equivalent to the opening side of the support body 21 The contact resistance of the part is increased. Therefore, the heat generation on the opening side will become too large, which will cause the cylinder head body 2 to locally melt, which may cause a gap with the valve seat 3. To prevent this phenomenon, as described above , At the lower face of the upper electrode 24, the opening side of the support body 21 may be A notch 28 is formed. In this case, the valve seat 3 and the cylinder head body 2 are equivalent to the opening side of the support body 2 1 and the current value will be reduced. Therefore, the 'steam red head body 2 support body 2 1' On the opening side, a partial fusion may occur and a gap may occur between the valve seat and the seat. Since the central axis of the pressure iris rod 23 of the pressure cylinder 22 and the upper electrode 24 are the same, it is inconsistent with the device. Compared with 'the pressure difference of the upper electrode 24 as a whole or the position change in the horizontal direction of the upper electrode 24 can be reduced; the degree of the notch 28 can be made smaller'; at the same time, it can also prevent the cylinder head body 2 的 接面 22-This paper size applies to China National Standard (CNS) A4 (210X 297mm) Please read the back first

I

Page order A7 ^ 7 d2A〇25 4 V. Description of the invention (the core of the valve seat 3 of section 20a). Instead of providing the above-mentioned notch portion 28, an insulating material may be attached to the face below the upper electrode 24, or Prevent partial melting of the cylinder head body 2. After K5 ~ 2_5 seconds have elapsed since the power was turned on, if the welding power source 26 is turned off and the power is turned off, the valve seat 3 will be completely buried in the joint surface 2a of the cylinder head body 2. (See Figure 4 (c)) ^ At this time, the pressure is not stopped but the original state is continued. That is, until the molten reaction layer 6 on the aluminum side is completely solidified and cooled, 'keep it under pressure' to prevent the seat_and the cylinder head body The peeling or cracking of the joint faces, 3a, 3b caused by the different thermal expansion coefficients of 2. Also, as shown in FIG. 10, when the power is stopped, it is more desirable for us to reduce the pressure. That is, Due to the large pressure, after the deformation energy is reduced and solidified, there is a high possibility that each joint surface 2a, 3a, 3b will crack due to pressure, so the pressure is reduced to follow the collection. The degree of deformation can reliably prevent solidification caused by pressure Each of the rear joint surfaces 2a, 3a, 3b is cracked. After I, about 15 seconds have elapsed since the energization stopped, and by stopping the pressurization, the joint between the valve seat 3 and the cylinder head body 2 is completed. Then, the same The same operation is also performed on the cylinder head body 2, and the remaining three joint surfaces 2a, 2a are joined to each valve seat 3. Finally, by cutting the upper surface or the upper surface of each valve seat 3, The valve abutment surface 3 c is formed and processed into a certain shape. Thereby, the periphery of each of the intake and exhaust ports 21) of the cylinder head body 2 completes the engagement of the cylinder head 1 with each valve seat 3. That is, according to the above-mentioned embodiment, the valve seat 3 and the cylinder head body 2 (CNS), the 8th and the 4th secrets (-Α7 tl, the description of the invention (21 (please read the precautions on the back before filling the pain) (This page) The liquid-phase diffusion bonding is performed through the iron-side fusion reaction layer 5 and the Ming-side fusion reaction layer 6 due to heat generation and pressure accompanying energization. Therefore, the bonding strength is high, and it can be obtained in a short time. Steam rainbow head 1 which has better heat resistance than the solder used »In addition, in order to melt and discharge the solder, it can be achieved only by setting the pressure or current value. Therefore, a wide range of conditions for obtaining high bonding strength can be achieved. "Compared to the joining method using a heat jacket", the valve seat 3 can be particularly miniaturized. Therefore, the interval between the two suction and exhaust ports 2b, 2b can be reduced, or the stroke diameter can be increased. Furthermore, It can improve the thermal conductivity in the vicinity of the room without generating a thermal insulation layer. Furthermore, the water path of the cold part provided between the suction and exhaust ports 2 b and 2 b can be closer to the seat side, so it can effectively reduce Near the valve &lt; Temperature. Also, 'Even if a hot plug or an injector is installed in the suction Between the ports 2b and 2b, sufficient wall thickness can still be ensured. Therefore, the performance, reliability and design freedom of the engine can be improved. In addition, according to the first embodiment, each valve seat 3 is manufactured by sintering. The inside is immersed with Cu material, but if the density inside each valve seat 3 can be ensured to a certain degree, melt immersion is not necessary. Furthermore, by forming each valve seat 3 after sintering The sintered and forged material obtained by re-forging is printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, which is the same as the melt immersion. It can also eliminate the voids in the valve seat 3, so that the solder can be effectively discharged. 'It is the addition of a temperature higher than the melting point of the solder in the solder layer 7 by the resistance heating accompanying the current flow between the valve seat 3 and the cylinder head body 2'. Local heating such as heating causes the solder to melt. In addition, according to the first embodiment described above, the solder is composed of a eutectic composition. • 24-424 02 5 'i V. Description of the invention (22 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Make but It can also be a composition near it '. In this case, if the ratio of Zn is set to 92 to 98% by weight, the melting point of the solder can be set to 4 ° (rc or less, which can reliably prevent the deformation of the valve seat 3. Or the melting or softening of the cylinder head body 2 can effectively improve the joint strength of the valve seat 3 and the cylinder head body 2. (Embodiment 2) Figure 12 shows Embodiment 2 of the present invention, the valve seat 3 and the cylinder head. The method of controlling the energization when the main body 2 is engaged is different from the above-mentioned embodiment. That is, according to this embodiment, the current is not energized with pulses of a repeated current value through a certain current value. The current value on the larger side of a pulse energization is about 70! ^ 8 and is constant, and the current value on the smaller side is set to 0. In addition, the energization time of a large current value pulse is ... ~ 丨 seconds, the energizing time of the small current value pulse (the time when no current flows) is about 0 ~ 5 seconds. In addition, the number of high-current pulses should be 3 to 9 pulses (4 pulses in Figure 12). In addition, the time from the start of the pressurization to the start of the energization of the first large current value pulse '1 is the time from the stop of the last high current value pulse to the stop of pressurization, which is the same as the above embodiment. . The temperature change of the valve seat 3 when such pulse energization is performed is shown in FIG. Specifically, S, because the heat capacity of the wide seat 3 formed by the Fe-based material department is quite small, the temperature rise caused by the resistance heating of the valve seat 3, especially the central part in the vertical direction, is for the upper electrode. ㈣Steam red head Ben Li 2 feet exotherm 'and easy to exotherm θ bu · ^ Shao, it is not easy to exotherm, so' when the initial high current value pulse is energized, between the seat 3 and the cylinder head body 2 "high contact resistance 'Because of the large amount of heat generated by the dagger and the resistance, the vertical direction of the valve seat 3 is -25-This paper ruler Wei Caiguan Jialing (CNS) (Please read the precautions on the back before ^ C page) -St ^ • ϊ-n- II-· Λ2Α025 ^ Α7 ------§7 V. Description of the Invention (23) The temperature of the central part is above the A1 abnormality point when the energization of the first large current value pulse is stopped. At this stage, the valve seat 3 is almost completely buried in the cylinder head body 2, so the power can be completely stopped. However, the valve seat 3 is rapidly cooled from the temperature above the A1 transformation point, so the central part of the vertical direction Hardened to increase hardness. Therefore, when the temperature is slightly lowered, the second high-current pulse is energized. At this time, unlike the initial high current value pulse energization, by metallurgical bonding, the contact resistance will be reduced, the heat generation of the resistance will be reduced, and heat will also be released. Therefore, even if the current value is the same as the original, the temperature will also be No significant increase 'By repeating this action, annealing can be achieved, so the hardness of the valve seat 3 is hardly different. That is to say, in the second embodiment described above, the temperature of the central portion of the valve seat 3 in the vertical direction is gradually reduced by the pulse energization. Therefore, the hardness of the valve seat 3 does not increase significantly, and the workability during cutting of the inner peripheral surface can be prevented. deterioration. In addition, the valve abutting surface portion 3c becomes too hard, which can effectively suppress the valve from being easily worn. In addition, according to the second embodiment, the large current value of the pulse current is set to -foot, and the small current value is set to 0, but it is not limited to this. For example, as shown in FIG. 14 (a), a large current can be set. The value is reduced stepwise, as shown in Figure 丨, but the small current value may not be set to zero, but may be set to a large current value and a value of 0. Also, as shown in FIG. 14 (c), after the initial high current value pulse is energized, and then the small current pulse (Fig. 14 (〇 * 〇) is energized, it can be switched to reduce the current value in proportion to time. Continuous energization, after the initial high current value pulse energization stops, if the valve seat 3 can be annealed, you can do any kind (please read the precautions on the back before

Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs

424 02 5 'i a7 -------- __ 5. Description of the invention (24) Power-on control. Further, in order to increase the heat radiation of the valve seat 3 to the side electrode 24, it is preferable to cool the inside of the upper electrode 24 with cooling water. Further, as shown in FIG. 15, a cylindrical protrusion 31 facing the inner peripheral surface of the socket 3 may be provided below the upper electrode 24, and the protrusion 31 may be slightly spaced from the outer periphery of the protrusion 31 in the circumferential direction. A plurality of nozzles 32, .32, ... are provided to spray the cooling water in the upper electrode 24 onto the inner peripheral surface of the valve seat 3. Thereby, the valve seat 3 can be effectively cooled in the up-down direction, and the valve seat 3 can be prevented from overheating above the A 丨 abnormal point. (Embodiment Mode 3) Fig. 16 is Embodiment Mode 3 of the present invention, which is different from the above-mentioned Embodiment Modes-2 in the control method of energization when the valve seat 3 and the cylinder head body 2 are engaged. Specifically, according to this embodiment, the joint device 20 has a limit switch (see FIG. Π) as a seat position detection mechanism for detecting the position of the valve seat 3 in the height direction. 3 In the engagement position in a state where the cylinder head body 2 is almost completely buried, the limit switch is activated. After the start of energization, if the limit switch is activated, it is switched to a full current value which is smaller than the initial current value (about 70 k A) at the beginning of energization for energization. In addition, the energization after the switching is stopped, and the energization is started at the initial current value by time control ', and is stopped in 15 to 5 seconds. In the following description, in a state where the valve seat 3 is almost completely embedded in the cylinder head body 2 as described above, the energization control switched to a small current value is performed. First, at the start of the energization, as described in the second embodiment, the valve seat 3 is more heated than the cylinder head body 2 made of A1 series material. Therefore, although the thermal expansion car (linear expansion coefficient) is higher than the cylinder head body 2 is small, made ____________-27-This paper size is applicable to Chinese national standard (€ ~ 5) 8 4 specifications (2! 0/297 mm) 1 --- Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ24 025 ^ at ____ V. Description of the invention (25) Large thermal expansion. Therefore, if the energization is completely stopped when the valve seat 2 is almost completely buried in the cylinder head body 2, the contraction amount of the seat 3 is larger than that of the cylinder head body 2. Therefore, a tensile thermal stress is generated on the valve seat 3. Therefore, if the current is switched to a current value that is smaller than the initial current value, the temperature of the valve seat 3 will be gradually lowered as in the above embodiment. On the other hand, the temperature of the cylinder head body 2 rises due to the heat from the valve seat 3, so the temperature difference between the 'valve seat 3 and the cylinder head body 2 decreases. In this state, if the energization is stopped, the difference in shrinkage will be small, and the thermal stress generated in the valve seat 3 can be reduced. 'Therefore, according to the third embodiment, the valve seat 3 is switched to a current value smaller than the initial current value in a state where the valve seat 3 is almost completely embedded in the cylinder head body 2. Therefore, the valve seat 3 and the cylinder head body can be caused. The difference in thermal expansion (shrinkage) between the difference in thermal capacity and thermal expansion coefficient of 2 decreases. Therefore, it is possible to reduce the thermal stress caused by the stretch of the cymbals born in Minzu 3 and prevent the occurrence of longitudinal cracks on the inner peripheral face. In addition, according to the above-mentioned third embodiment, the current value after switching using the action of the limit switch is set to be constant, but not limited to this. For example, the current value after switching can be set as shown in Figure 17 (a). The relative time is proportionally reduced, as shown in FIG. 17 (b). 'Same as the second embodiment described above. After the limit switch is operated, a pulse with a larger current value than the initial current value is energized. Furthermore, the same energizing control method 'as in the above-mentioned second embodiment can also obtain the same effect. · In addition, according to the above embodiment, the state Z is to switch the current value by detecting the position of the valve seat 3 in the height direction by the limit switch, but a photodetector can also be used. Jia Pi (CNS)-A4 specification (21 () &gt; &lt; 297 public works-~~~ ^-(please read the precautions on the back before P book I) • install. Line 025 4 s --- 5 、 Explanation of invention (26

Printed by the Consumers' Cooperative of the China Standards Bureau of the Ministry of Economic Affairs, instead of detecting the position, the position detection mechanism is used for timing control to switch the current value according to time. In this case, it is advisable to switch the current value from 0 · 2 5 ~ 1 second (more preferably 0.2 5 ~ 0,5 seconds) from the start of power on. If this is the case, it is tied to the wide seat 3 and is almost completely buried in the cylinder. The head body 2 is switched. Furthermore, before the valve seat 3 is joined to the cylinder head body 2, it is desirable to preheat the body to the left and right. In this way, the temperature difference will be ^, and the thermal stress can be suppressed to a low level. As a result, the occurrence of longitudinal turtles in the valve seat 3 can be reliably prevented, and it is not necessary to switch the current value after the limit switch is activated. In this way, in order to preheat the cylinder's head body 2, the above-mentioned joint device 2G can be used. That is, by replacing the upper and lower% poles 24 and 25 of the joint device 20 with carbon, The two-electrode 24'25 clamps the cylinder head body 2 to preheat the welding power source ON. At this time, since the diodes 24 and 25 are made of carbon, self-heating is large, and the cylinder head body 2 can be preheated efficiently. In this way, it is possible to respond to the serialization operation. Further, as shown in FIG. 18, an upper slope portion 3d having an increased degree toward the inner peripheral surface may be provided on the upper portion of the valve seat 3, and an upper slope portion 3d of the valve seat 3 may be formed on the lower portion of the upper electrode 24 to substantially The fitted conical recessed portion 34 and the upper slope portion 3 d of the upper surface of the valve seat 3 are pressurized in a state of substantially fitting the recessed portion 3 4 of the upper electrode 24. That is, if it is pressurized in this way, the pressure reducing effect of the valve seat 3 will increase the pressure. Therefore, even if the temperature of the valve seat 3 rises, its swelling can be prevented. The difference in quantity is reduced. Therefore, even in this case, the valve seat 3 can be prevented from cracking in the longitudinal direction. Furthermore, 'as shown in Fig. 19', in order to collect the stress on the inner peripheral surface side of the valve seat 3, there is also the direction (please read the precautions on the back first, then% ^ this page)-installation ·

、 1T -29-This paper size is in accordance with Chinese National Standard (CNS) Α4 size (210 X 297 mm) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ2Α 〇25. Invention Description (27 Moderate, J: Included The corner portions 3 e, 3 e of the peripheral surface portion, the upper surface portion, and the lower surface portion. ^ The inner peripheral surface side of the cymbal seat 3 is finally cut off. Therefore, only the cut-off portion can be made of inexpensive materials. (Embodiment 4) FIG. 20 is the main part of the fourth bonding device according to Embodiment 4 of the present invention (the same portion as in FIG. 7, the detailed description is omitted, and only the different parts are described), and its current path is the same as that of the above embodiment. ^ Three different. Specifically, according to this embodiment, the bonding device 20 is the same as the first to second embodiments described above, 'has a lower electrode 25, but this lower electrode 25 is not connected to the welding power source 26, and only The pressure valve seat 3 and the cylinder head body 2. The upper electrode 24 is composed of two first and second electrodes 24a and 24b. The first electrode 24a is the same as the first to third embodiments. On the one hand, the second electrode 24b is moved up and down. The first electrode 24a can be moved up and down independently of the other pressure cylinders which are the same as the pressure pressure iris 22. Also, the first electrode 24b is different from the first electrode 24a and is post-manufactured. The two electrodes 2 4 a And 2 4 b are respectively connected to the welding power source 26. The first and second electrodes 24a and 24b are also in the cylinder head body 2 and are connected to the non-engaged valve seat 3 to be joined and the previously joined one. The upper surfaces of the compartments 3 are respectively connected. If the power source 2 6 Ο N 'is passed through the first electrode 2 4 a, the valve seat 3 is not connected, the cylinder head body 2, the valve seat 3 is connected, and the second The electrode 24b 'returns to the welding power source 26. As a result, the engaged valve seat 3 is used as a return current path when the valve seat 3 is not engaged. When engaged

(Please read the precautions on the back before # 舄 This page} —Packing · Γ Order-30-This paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) 5. Description of the invention (28 A7 S7 Central Ministry of Economy Printed by the Consumer Bureau of the Standards Bureau, “The valve seat 3 is joined, the resistance is small, and the internal temperature of the joint seat 3 is not as high as that of the valve seat 3. However, the hard second electrode M will self-generate. Therefore, as described in the second embodiment above, even if the joint 3 is hardened and the hardness is increased, it can still be moderately tempered. In addition, because of the dream union I, there is no need to increase the process, and the joint can be performed. Tempering of compartment 3 is based on the increase in the hardness of valve seat 3 during the joining, which can be effectively produced. In addition, according to the above-mentioned embodiment, the second electrode 24b is made of carbon, this system: me: heat The largest material is that when the temperature of the junction holder 3 is too high, the-<e pole 24b is selected to be made of iron and made of brass, which is particularly effective for tempering. According to the first embodiment described above, Fourth, the joint surface 2a of the cylinder head body 2 is shaped before joining The tapered shape of about 0 79 rad (45.) is not necessary. In this case, as shown in FIG. 47 (a), the valve seat can be held in advance on the upper electrode 24. That is, the lower portion of the upper electrode 24 ' A protruding portion 36 having a slightly smaller outer diameter downward is formed in advance. This—the outer peripheral surface of the protruding portion 36 and the inner peripheral surface of the valve seat 3 are fitted in a slightly tightly fitted state. One to four are the same, the upper electrode 24 is moved downward, and the two are joined by applying electricity and pressure between the valve seat 3 and the cylinder head body 2 (see FIG. 47 (b)). At this time, the valve seat The first joint surface 3a of the third joint surface 3b, the cylinder head body 2 plastically flows, and at the same time, the valve seat is buried in the cylinder head body 2. Thus, when the joint is finished, as shown in (c), the valve seat 3 It is in a state of being fully embedded in the cylinder head body 2 'to form a joint surface 2a on the cylinder head body 2. If the 3 and 3 patterns on the upper electrode 24 are raised (please read the precautions on the back before writing this page) ). Packing · Order 31-Zhang Chi Jia Pui (CNS> A4 size (210X 297 mm) 424 025 ~~ —. V. Description of the invention (29 8 highlights The 3 6 series is easily disengaged from the inner peripheral surface of the valve seat 3. In this way, even if the tapered joint surface 2 &amp; is not formed in advance on the steam red body 2, the cylinder head body 2 and the valve seat 3 are in a joined state. It is the same as the first to fourth embodiments. Furthermore, by holding the valve seat 3 in advance on the protruding portion 36 of the upper electrode 24, the positioning of the valve seat 3 relative to the cylinder head body 2 can be performed accurately. At the same time, the machining of the cylinder head body 2 can also be omitted. Therefore, productivity can be improved compared to the case where the tapered joint surface portion 2a of the cylinder head body 2 is supplied to the valve seat 3 and positioned and joined. Further, according to the first to fourth embodiments, the solder system 211 is 95% by weight of a sufficient Zn-AI eutectic alloy, but may also be composed of a eutectic composition or a nearby composition (for example, 92 to 98% by weight of Zn). Zn_Ai series alloy. (Embodiment 5) Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the reverse side again: ^: this page) Figure 2 1 is a piston 41 of a diesel engine as a fifth joint metal part of the present invention Here, the piston 41 is the same as the embodiment described above. A friction ring (first metal member) made of a Fe-based material is joined to the upper outer peripheral portion of the piston body 42 (second metal member) made of a magic material. ), And: the ribs in the combustion chamber 所 provided in the central part of the upper part of the piston body 42 are connected with Fe (for example, Austen stainless steel) reinforcing members 4 * (first metal parts). That is, until now, the piston body 0 was cast after the wear-resistant ring 43 was cast, but even if the piston body 42 was heat-treated to increase the cost, Fe_Alltb, a brittle intermetallic compound, would be produced under the condition that the friction ring was cast. Therefore, it is impossible to perform T6 heat treatment. However, according to this embodiment, the piston body 42 can be heat treated in advance with T6, and then the friction ring can be joined to the living _____________ _- 32-This paper size applies to the Chinese National Standard (CNS) A4 specification (2Ι0 × 297 mm) ) Description of the invention (30 plug body 42. Also, for example, even if a friction ring 4 is joined to the piston body 42: $ 作 Τ6 heat treatment 'its heat resistance is good, Fe_A1 is not easy to form, Ja has problems, so it can improve the piston 41 Both wear resistance and strength. On the other hand, the wall portion in the combustion chamber 42a of the piston body 42 has a problem that the cracks are liable to occur at the & corner portion. However, according to this, [Form 6] The ribs in the combustion chamber 42a. The reinforcing member 44 is joined, so that cracks can be prevented from occurring on the wall in the combustion chamber 42a. (Embodiment 6) —The picture shows the sixth embodiment of the present invention. As the main part of the cylinder 5 i of the engine that joins metal parts, this cylinder 5 is the same as the first embodiment described above. The water jacket 523 of the cylinder head body 5 2 (second metal part) made of A 1 series material is the same as the first embodiment. On the 'joint there is made of ㈣ material The rib member is called a first metal member). Also, the '54 is a cast iron bush inserted into the inner peripheral surface of the air cylinder. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ^ To date, in order to improve the rigidity of the steam red head 51, the sand core is used to form ribs on the upper part of the water strut when the steam ancestor is the original material. According to With this method, the cycle time at the time of casting will increase, and there are productive =: questions. However, according to this embodiment, the cylinder block group "No." can be facilitated, and at the same time, the rib member 53 can be connected to the upper part of the water jacket 52a of the cylinder block body 52 in a short time. Such as the deformation of the sleeve 54 of the inner peripheral face, the performance of the engine equivalent to iLocu can be improved. It can also be applied to linerless steam reeds.一 [Example] _ The following examples will be described in detail. First, as a second metal part, as shown in 23, it is based on A 丨 alloy 33-this paper size is applicable to China's national counties (c is called A4 specification (21〇 &gt; &lt; 297) A2A 025 4 V. Invention Explanation (31) The object (AC4D specified in H5202 m) is converted into a test piece 61. T6 heat treatment is performed on this test piece 6. Then, as shown in the table !, the solder coating method, the seat shape and the first The tapered angles ΘΓ of the joining surfaces are different, and five types of valve seats (Examples 1 to 5) are made. In this Table 1, "FrictiOn" shown in the column of solder coating means the valve seat. When an iron-side molten reaction layer and a solder layer are formed on the surface portion, the method is covered by soldering (motor welding method). On the other hand, "^ sonic wave" refers to the use of ultra-thin waves as described in the first embodiment. Sonic plating method to coat solder. Also, the "thin wall" in the column of valve shape, as shown in Figure 24, means the valve seat is formed to a shape close to the final shape and the wall is thin. The other side ©, "Thick Wall" means as shown in Fig. 25 *, formed in the same shape as the above embodiment The material of the valve seat is the one shown in Table 2. In this Table 2, the value is weight%, and Tc refers to the total carbon content (free carbon (graphite) and carbon body). The total amount of carbon). Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. The solder is made of 95% by weight zn ingredients, with weight% '/ ^ ingredients and 0.05% by weight of Mg ingredients (Zn_A1 * crystalline alloy). Furthermore, the inside of each valve seat is impregnated with 0:11 series material, and the surface is provided with a Cu bond layer. Each of the valve seats of Examples 1 to 5 is the same as the first embodiment described above, and is made of the test piece described above. Bonded to test piece 6 1-. The applied pressure and current value at the time of bonding are set to the values shown in Table 1. In addition, the current value is changed between the valve seat and the test piece 61 due to the change of the Gane force. The contact resistance will change, resulting in ____-34-A paper size suitable for wealth and family (CNS) MM ^ Tmx29V ^) &quot;-^ '^ 025 -i at — 1 ^ 7 V. Description of the invention (32) The change in the depth of the print booth of the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs is set to be able to form Substantially the same depth of the buried person. In addition, for comparison purposes, 'the valve seat (the surface is Cu-plated) with a thick wall shape and θ1 = 〇52 rad (30 °)', the applied pressure and current value are 29420 N (3000 kgf) and 70kA, respectively. Next, solid phase diffusion bonding (compression bonding) was performed (comparative example). Next, the joint strengths of the valve seats of Examples 1 to 5 and Comparative Examples were measured. That is, as shown in FIG. 26, the $ inspection piece 61 is placed on the stage 63 with the valve seat 62 joining side as the lower side ^ 'At this time, the valve seat 62 is not in contact with the stage 63 The method is located on the upper side of the through hole 63a provided at the slightly central portion of the stage 63. Then, a cylindrical pressure tool 64 was inserted from the upper side of the through hole 6U of the test piece 61, and the valve seat 62 was depressed to measure the withdrawal load of the intermediate seat 62 when the test piece was pulled out. This pull-out load corresponds to the bonding strength. The results of the pull-out load measurement test are shown in FIG. 17. It can be seen from the judges that comparing Example 1 and Example 2 shows that, by ultrasonic plating, an iron-side molten reaction layer and a solder layer are formed on the surface of the valve seat, as compared with coating by wiping solder. This method can further improve the joint strength. It can be presumed that, because the surface of the valve seat after the test, in Example 2, as described later, the iron-linth reaction layer (see FIG. 30) remained. In contrast, the solder layer or Traces of the molten reaction layer on the iron side were hardly found. Therefore, in Example 1, the molten reaction layer on the iron side was not completely formed. Test piece (approximately 180 times) on the surface part 'Test W (approximately 36G times) of the joint between the seat and test piece 1 after joining, and pull-out load measurement test circle 6 1

(Please read the precautions on the back first—install I # script &quot;-° 424 025

V. Description of the Invention (33 The test piece r Yan printed on the surface of the seat after printing by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs is called a swab (about 36 times). In Figure 28, the upper side is the valve seat, and the lower side It is not Cu plating, but it is a metal arm, and the iron side melts the reaction layer to form a solder layer. In addition, it is judged that there is a hole in which the material is impregnated. In addition, it is shown in Figure 2. In 9, there is an iron-side molten reaction layer and an aluminum-side molten reaction layer between the upper valve seat and the lower test piece 6]. Furthermore, in FIG. 30, the surface portion (lower portion) of the valve seat can be identified. The thin iron-side fused reaction layer remains thinly. By comparing Example 2 and Example 3, it can be seen that the valve seat with a thick wall shape has a larger pull-out load compared to the seat with a thin wall shape. It can be estimated that The reason is that in actual crime 2, the corners of the valve seat will be deformed, so the deformation will occur. The actual pressing force acting on the joint face caused by the household weight is reduced. By comparing Example 3 and Example 4, It can be seen that in Example 4 ′ in which the tapered angle θ 1 of the first joint face is large, as described in the first embodiment, the oxide scale The film has an excellent breaking effect, and the bonding strength is high. Furthermore, according to the comparison between Examples 4 and 5, it is known that Example 5 with a large applied pressure is 'higher in bonding strength. In addition,' it is set to 29420 N ¢ 3000. kgf), compared with the comparative example, the bonding strength is significantly improved. Here, in Example 5, the electron micrographs (approximately 10,000 times) of the joint surface of the valve seat and the test piece 6 i after joining are shown in FIG. 3! In this figure, the left side is the valve seat (including the white part), and the right side is the test piece 6 j. In addition, the gray portion viewed in the meantime is an iron-side molten reaction layer and an ingot-side molten reaction layer. The thickness of these two layers is judged to be 1 μm or less. In the elemental analysis of these two layers, Fe'Zn and A1 were detected, respectively. In order to make a detailed investigation of the impact of the above pressure, the solder (please read the precautions on the back before reading this page) &gt; I. II · .Installation,-&amp; -36-Private Paper 掁Standards apply to Chinese National Standard (CNS) A4 specifications (210X297 male thin) 424025 4

V. Description of the Invention (34 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ¾ Overlay method, seat shape, and tapered angle Θ1 of the first joint face, set to be the same as the above-mentioned examples 4 and 5, and apply pressure in parallel respectively Set to 9807 Ν (1000 kgf), 14710 Ν (1 500 kgf), and 29420 Ν (3 000 kgf), and attach the valve seat to the oxygen test piece 61 'in accordance with the pull-out load measurement test originally performed above. The pull-out load was determined. In addition, the hardness of the test piece 61 after joining was measured by setting the applied pressure to 9807 N (1000 kgf) and 2942 N (3000 kgf). The angle between the first joint surface and the second joint surface of the valve seat (the point where the distance from the joint surface = 0 in FIG. 33) is toward the outer peripheral side of the test piece 61 and on the joint side of the valve seat. The opposite side 'is inclined at about 0.7 9 rad (4 5.) at a certain distance. The results of the upper pull-out load test are shown in Figure 32, and the results of the hardness test are shown in Figure 32. 33. It can be seen that the greater the pressure, the higher the bonding strength, and the higher the pressure, the test piece 61 is connected. The hardness near the face is the same. This is because, if the pressure is applied, the contact resistance is low and the heat generation is small. As a result, the softening of the test piece 61 is suppressed, and the softening is suppressed, and the plastic flow can be surely performed. As a result, the destruction effect of the oxide film is improved, and the solder can be surely discharged. Second, in order to investigate the effect of the pulse current, the valve seat is connected to the test piece 61 by the pulse current. The high current value and small current value of the pulse current are 70kA and 0. In addition, the energization time of the large current pulse is 0.05 seconds, and the energization time of the small current value pulse is 0.1 seconds.-Furthermore, the number of high current value pulses is 6 pulses, on the other hand, it is For comparison, the valve seat is connected to the test piece 6 丨 by continuous power application (for 2 seconds at a current value of 60kA). And this paper standard applies to the National Standard of China (CNS) A4 Specifications (2) 〇X 297 mm

4 24 02 5 ^

Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ′ The pressure is set to 29420 N (3 000 kgf). In addition, for those who are connected by pulse current and continuous power, the hardness before and after joining the upper and lower ends of the valve seat (Part A) and the central part of the vertical direction), and the hardness of the test piece 61 from the valve seat. The corners of the first joint surface and the second joint surface face the outer peripheral side of the test piece 61 on the opposite side from the joint with the valve seat at various fixed distances in a direction inclined by about 0.79 rad (45 °). Pull out the load. The hardness test results before and after joining are shown in Fig. 34. From this result, it can be seen that the hardness of the joints with continuous electric conduction, especially the central part (B) in the vertical direction, is very high after joining. In contrast, the pulsed electric joints do not cause hardening and hardness due to annealing. Almost no rise. The test results of measuring the hardness from the distance from the joint surface are shown in Figs. From this result, it can be seen that the hardness of the test piece 61 decreases due to the heat from the valve seat caused by the pulse-powered joint. The measurement results of the pull-out load are shown in Figs. From the above, it can be seen that by applying pulsed current, 'in addition to suppressing the increase in hardness caused by annealing inside the valve seat', it is also possible to reduce the amount of shrinkage by reducing the temperature difference between the valve seat and the test piece 61 by exothermic heat to the test piece 61. In addition, it can also improve the bonding strength. Then, in order to investigate how the valve seat is embedded in the test piece 61 during the pulse energization, the embedded amount 7 is measured in accordance with the time from the start of the pressurization (see FIG. 37). At this time, the large current value of the pulse current is set to 68 kA, and the small current value is set to 0. In addition, the energization time (Η) of the large current value pulse, the energization time (c) of the small current value pulse, and the number of large current value pulse (N) are variable, and the basic conditions are 0.5 seconds, 0_ 1 second, and 6 glands rush. In addition, in view of this condition -------38-This paper size applies the Chinese National Standard (CMS) Α4 specification (210X297 mm) '--- (谙 Please read the precautions on the back before writing this page ): 1d printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs, printed d2d 02 5 ^ A7 ~~~ S7 V. Invention Description (36), test under the condition of changing any of the items (for the conditions of change, please refer to the figure) 3 8). The results of the above-mentioned embedding amount measurement test 'are shown in Figs. From this, Shi Shiguo knows that the embedding is almost completed by the initial high current pulse, and the subsequent energization does not occur. In addition, the range of the setting conditions of this test is that the embedding amount is hardly changed. However, in the case where the energizing time of the large current value pulse is longer than 1 second, compared with other cases, since the initial energization of the large current value pulse, the embedding amount is only slightly increased, and when the number of pulses exceeds 9 pulses From time to time, the test piece 61 is softened to allow the embedding to proceed. Therefore, in the initial energization of the high current value pulse, it is sufficient to set the conditions that the valve seat can be buried, and in the second energization of the low current value pulse, the annealing and The conditions under which the heat release of the cylinder head body can be performed may be sufficient. Next, "the valve seat is used as a sintered forging material, and it is joined to the test piece 61 by pulse current application under a pressure of 2 942 0 N y kgf). At this time, the pulse current &lt; large current value is set to 60 k A, and small current value is set to 0. In addition, the energization time of the large current value pulse, the energization time of the small current value pulse, and the number of large current value pulses are set to 0.5 seconds, 0 seconds, and 4 pulses, respectively. For comparison, a valve seat made of a sintered material of a C: u-based material was similarly bonded to the test piece 61. However, the large electric value of the pulse energization is set to 5 3 k A. In the case of a valve seat made of sintered and forged material and a molten sintered sintered material, in the photomicrograph 61, the corner of the first joint surface and the second joint surface of the valve seat faces the outer peripheral side of the photomicrograph 61 On the opposite side of the side where the valve seat is joined, each of which is inclined in the direction of about 0 · 7 9 rad (4 5.) ___- 39-This paper size applies the Chinese National Standard (CNS) A4 specification (21 〇X 297 kilometers (please read the precautions on the back before writing this page) -3 丁 ^ 2d〇25 ^

A certain distance is measured for hardness. The results are shown in Fig. 3 9 Φ. From the results of rb &amp; U Tin j. ^, it can be known that the sintered material dipped in the graft ′ is broken in the test piece 61... The hardness of Menshao is low. This is because the Cu-based material '(dip immersion, heat generation inside the valve seat is suppressed, and the heat generation is effectively performed at the joint surface portion, so the test piece 61 is softened. However, even the upper part is burned and forged. U material 'joining can also be performed well. This point can be judged by the photomicrograph of the joint surface of the valve seat test piece 61 (Figure * 〇 magnification is about $ 〇 times, Figure 41 magnification is about 400 times) This is because, due to forging, the two holes of the valve seat are broken, which has the same effect as the person who has been immersed. S / person, for the formation of iron on the valve seat (those who have been immersed in copper) When the side fusion reaction layer and the material layer are formed by fusion plating and ultrasonic recording, investigate the difference in pull-out load. At this time, each of the fusion bonding and ultrasonic plating is applied. The holders are respectively connected to the test piece 61 under a pulse current by a pressure of 29420 N (3 000 kgf). Here, the large current value of the pulse current is set to 70 kA, and the small current value is set to 0. Also, the large current value The energizing time of the pulse, the energizing time of the small current value pulse, and the number of high current value pulse are respectively Set to 0 _ 5 杪, 0.1 seconds, and 3 pulses. The results of this pull-out load measurement printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs are shown in Figure 42. For reference, 'solid phase diffusion' The pull-out load at the time of joining is also shown. From this result, it can be seen that 'ultrasonic plating has higher bonding strength than molten plating. However,' even in the case of molten plating ', it is better than solid-phase diffusion bonding. In this case, the bonding strength is also excellent. Here, the photomicrographs of the molten reaction layer on the iron side and the solder layer of the valve seat immediately after the hot-dip plating are shown in Fig. 4 and 3, and Sonic key bonding _______- 40 -___ i Paper size applies Chinese National Standard (CNS) A4 specification (210X297mm) ~~ Α7 «7 Α2ά025 ^ V. Description of the invention (38) Immediately after the iron seat melting reaction of the valve seat Micrographs of the solder layer and the solder layer are shown in Figure 44 (both magnifications are about 1,000 times) ^ In these photos, the upper side of the interposition 'and its lower side sequentially form an iron-side molten reaction layer and solder Layer, melt-bonded 'iron-side molten reaction layer is extremely thin (less than 1pm). Shown are the measurement results of the chemical composition of the iron molten reaction layer and the solder layer of the valve seat immediately after the molten plating, and the chemical composition of the solder layer of the valve seat immediately after the ultrasonic plating (the value is % By weight). In the case of ultrasonic plating, as mentioned above, the molten reaction layer on the iron side is extremely thin, so the measurement of the chemical formula is impossible. The results of line analysis show that the molten reaction layer on the iron side exists. In the case of fusion plating, compared with ultrasonic plating, the molten reaction layer on the iron side becomes considerably thicker, and the proportion of components in the molten reaction layer on the iron side is reduced (the ratio of Fe and A1 components is much larger). Solder The composition is greatly deviated from the eutectic composition. Therefore, in the case of molten plating, although the solder layer is maintained at the eutectic composition, a large amount of non-eutectic composition exists in the molten reaction layer on the iron side. The heat input of the molten solder is so large that the test piece 61 is softened, so that the damaging effect of the oxide film or the discharge of the solder becomes inadequate, so that compared with the case of ultrasonic plating, the measurement results are as above. Intensity decreases. Therefore, if the composition with the initial &amp; eutectic composition deviates as the solder, the solder layer also becomes a composition which deviates significantly from the eutectic composition, and the destruction effect of the oxide film or the discharge of solder can be estimated to be greatly reduced. On the other hand, the discharge effect of ultrasonic bell or solder = decreased. On the other hand, in the case of ultrasonic recording, the composition of the material is maintained at or near the eutectic composition, and the destructive effect of the oxide film can be surely obtained. ) M specifications (21〇 &gt; &lt; 297 Gongchu) —-----—_ (Please read the precautions on the back before this page)

—Pack_ P

, 1T Printed by the Consumers 'Cooperatives, Central Standards Bureau, Ministry of Economic Affairs 42 4 025' This

V. Description of the invention (Yu) The Central Bureau of Standards of the Ministry of Economic Affairs—the effect of exhausting printed matter or solder by the Industrial and Consumer Cooperatives ’can further increase the joint strength of two metal parts. In addition, in the case of the above-mentioned fusion plating and the case of ultrasonic plating, the electron micrographs (the magnifications are all loooo times) of the joint surfaces of the valve seat and the test piece 61 after the bonding are shown in FIG. 45 and FIG. in. In these photographs, the valve seat (the white part is the immersed copper) on two sides, and the black part on the lower side are test pieces 61. The grey part is the iron-side melting reaction layer and the Ming-side melting reaction layer. From this, it can be seen that in the case of 'ultrasonic gas deposition', even after the joining, the total thickness of the molten reaction layer on the iron side and the bright reaction layer on the Ming side can be significantly smaller than that in the case of molten plating. [Effects of the Invention] As described above, the invention in the first scope of the patent application is a method of joining the first metal member and the second metal member, and the joining surface of the first metal member is previously compared with the above. The two metal parts have a low melting point and a diffusion layer composed of the solder and the first metal part composed of eutectic rhenium with the second metal material or its vicinity, forming the solder layer, and combining the first metal part and the first metal part. Heating and pressing at a temperature higher than the melting point of the above-mentioned filler material between the two metal parts increases the proportion of the second metal component of the solder ten, and forms a diffusion layer between the solder having a high melting point and the second metal part. And, the molten solder is discharged from the joining surface of the two metal parts, and one side is used for liquid-phase joining through the above-mentioned two diffusion layers. _Please patent the invention of item 4 of the patent, as the joining metal part of the first metal part and the second metal ^, the first metal part and the second metal part are formed between the first metal part and the second metal part. The face of the metal parts is 42-This paper size applies to China® Standard (CNS) A4 (2 丨 〇 &gt; &lt; 297) (Please read the precautions on the back before writing this page)

Line 1T ----------- -II —1 I. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 424 025 4 A7

Said two metal parts have a low melting point and are eutectic with the solder of the second or nearby composition and the eutectic composition of the first metal part. The fineness is caused by the increase in the proportion of the components in the welding department mentioned above, which results in a high melting point of the material. "The private person also has a high melting point." Next, make δ for liquid phase diffusion. Therefore, according to these inventions, by means of a string operation, it is possible to obtain a joint and a female 疋 ㈣ ⑥, and it has more metal parts than a hard material. …, According to item 2 of the patent application patent garden; it is clear that the simple and specific material can be easily obtained by heating the temperature on the material by the heat generated by the energization between the first and second metal parts. Heating method. According to the inventions in claims 3 and 15 of the patent application park, the first-metal component is composed of an Fe-based material, the second metal component is composed of an 80-series material, and the solder is composed of a Zn-based material. The most suitable material combination for the joining method of the first invention or the joining metal part of the 14th invention can be obtained. According to the invention in the 4th or 16th of the scope of the patent application, the solder is made of Zn * 9 2 ~ 98 8% by weight Z n A 丨 series alloy, so when the ρ e series metal parts and AU metal parts are joined It is easy to obtain a concrete material with low drop point and simple soldering. According to the invention in the scope of application for patent No. 5 or 17, the solder is composed of ζη * 95 5 weight. /. Z n _ A 丨 eutectic alloy. This makes it possible to obtain solder that is most suitable for joining Fe metal parts and A 丨 metal parts. According to the invention claimed in item 6 of the scope of the patent application, the first metal part is made of paper with a suitable paper size) (210x ~ ^

Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 424025 a A7 __________67 __ 5. Description of the invention Cu) Sintered material. Thereby, the first metal member can be simply manufactured into a certain shape. According to the invention of claim 7 or 19, the first metal part is a sintered forged material. This makes it possible to further increase the bonding strength of the bonded metal parts. According to the invention of claim 8 or 18 in the scope of the patent application, the interior of the first metal part is fused with a high-conductivity material before being formed into a solder layer and a diffusion layer. Therefore, it is possible to effectively improve the bonding strength of the bonded metal members. According to the invention with the scope of patent application No. 9 or 20 $, the high conductivity material is Cu-based material. Thereby, a specific material of a low-conductivity high-conductivity material can be easily obtained. According to the invention in claim 10 of the scope of patent application, a solder layer and the diffusion layer are formed on the first metal member such that the thickness of the diffusion layer between the solder and the first metal member is 1 μm or less. The thickness of the diffusion layer of the solder and the first metal component according to the invention of claim 21 is set to 1 μm or less. Therefore, according to these inventions, the destruction effect of the oxide film on the surface of the second metal member or the effect of discharging the solder can be reliably obtained, and the bonding strength of the second metal member can be further improved. According to the invention in the scope of patent application No. 1 丨, the surface of the first metal part in the solder bath is covered with solder in a manner that imparts ultrasonic vibration, thereby forming a solder layer and the above solder on the first metal part. Foot diffusion layer with the first metal part. Thereby, a diffusion layer of the solder and the first metal member can be surely formed in a simple manner, and a bonded metal member having particularly high bonding strength can be obtained. ° According to the invention in the 12th scope of the patent application, the first metal part and the second |-44-___ This paper size applies to the county (⑽) A4 size (2 丨 0x297 Gongchu ·; | '~ ----- ----- ^ ---_---- install-Γ C Please read the notes on the back before writing this page} Order 4 2 4 02 5 ^

The Central Standards Bureau of the Ministry of Economic Affairs-Industrial-Consumer Cooperation—In the liquid-phase diffusion bonding of printed metal parts, the joining part of the second metal part is plastically flowed, so that the solder and the first metal part can be reliably formed by a simple method The diffusion layer can further improve the bonding strength of the metal parts. The invention of claim 13 of the 'Patent Scope', as a method for joining a first metal member made of an Fe-based material and a second metal member made of an A1-based material, is prepared in advance on the joining surface of the first metal member. The diffusion layer of the solder made of iZn-Al eutectic alloy with 95% by weight of Zn and the first metal member was formed to form the solder layer, and then the first and second metal members were accompanied by the two metals. Due to the heat and pressure applied between the components, the diffusion of the solder and the second metal component is formed by the increase in the proportion of the A1 component in the solder, and the molten material is transferred from the two metals. After the bonding surfaces of the members are discharged, liquid-phase diffusion bonding is performed through the two-diffusion layer I described above. In addition, according to the invention according to claim 24 in the scope of the patent application, as the joining metal member formed by joining a first metal member made of a Fe-based material and a second metal member made of an A 丨 -based material, the first metal The component and the second metal component are a diffusion layer formed between a solder and a first metal component composed of a Zn_eutectic eutectic alloy with 95% by weight Zn formed on a joint surface of the first component, and A liquid-phase diffusion bonding is performed on the bonding surface of the two-metal component in a state where the solder formed by melting and diffusing the solder with a high melting point due to the increase in the eight components in the solder and the diffusion layer of the second metal component. This makes it possible to join ^ -based metal parts and A1-based metal parts in the easiest and surest way, increase the bonding strength sufficiently, and improve the heat resistance by more than solder. China National Standard (CNS &gt;)-; ----- (Please read the precautions on the back before this page)

、 1T A7 «7 Λ2Α025 ά 5. Description of the invention (43) According to the invention in the second and second scope of the patent application, the first metal part is the valve seat of the engine, the second metal part is the cylinder head body, and the joint metal part is the above valve. The seat is connected to the cylinder head formed by the intake and exhaust opening peripheral edges of the cylinder head body. With this, the performance and reliability of the engine can be improved, and effective utilization of the 14th to 21st inventions in the scope of patent application can be achieved. The invention according to item 23 of the scope of the patent application is the invention of any one of the scope of applications 14 to 22, which is the diffusion layer between the solder and the first metal part, and the solder and the bamboo metal part # An alloy portion of the two diffusion layers is formed on at least a part of the diffusion layers. This can further increase the bonding strength. [Brief Description of the Drawings] Fig. 1 is a sectional view of a main part of a steam red head of an engine as a joining metal member according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the joint state of the Min seat and the cylinder head body. Figure 3 is a sectional view of the shape of the valve seat before joining. Fig. 4 is an explanatory diagram of a sequence of joining a valve seat to a cylinder head body. Fig. 5 is a schematic explanatory diagram of a joining process of a valve seat and a cylinder head body. Cooperating with the National Standards Commissioner of the Ministry of Economic Affairs of the People's Republic of China, Du printed in Fig. 6 is an explanatory diagram of the state in which the solder is coated on the surface of the valve seat by applying ultrasonic vibration to the solder bath. Figure 7 is a side view of the joining device. Fig. 8 (a) is a view of arrow VIII in Fig. 7 '(b) is a bottom view of the upper electrode. Fig. 9 is a timing chart showing a control method for pressurization and energization. FIG. 10 is a diagram corresponding to FIG. 9 and showing another example of the pressure control method. k ruler (C_NS) A4 specification (2! 0 '^^ ----- Printed by A7 of the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 67. V. Description of the invention (44) Figure 1 1 of A1-ζ η alloy State diagram. Fig. 12 is the same as Fig. 9 in the second embodiment. Fig. 1 is a graph showing the temperature change inside the valve seat using pulse energization. Fig. 14 is the same as Fig. 9 showing another example of the energization control method. Fig. 15 is a sectional view showing a state where cooling water is sprayed on the inner peripheral surface of the valve seat. Fig. 16 is a view corresponding to Fig. 9 in the third embodiment. Fig. 17 is a view showing another example of the energization control method. A figure corresponding to Fig. 9. Fig. 18 is a sectional view of a valve seat in the diameter direction of the valve seat; and a state of being pressed to suppress the thermal expansion state. Fig. 1 Other examples of the shape of the 9 seat valve are shown in Fig. 3 Corresponding figure. Figure 20 is a cross-sectional view of the main part of the state where the valve seat and the cylinder head body are joined using the four-joint device of the embodiment ® FIG. 21 is a cross-sectional view of the piston of the engine as the fifth-joint metal member of the embodiment Figure 2 2 is a sectional view of the main part of the cylinder block of the engine as the sixth joint metal component of the embodiment. Figure 2 3 Sectional view of the test piece. Figure 24 is a cross-sectional view of a thin-walled valve seat. Figure 25 is a cross-sectional view of a thick-walled valve seat. Figure 2 6 Figure 27 is a graph showing the results of the pull-out load measurement test for the valve seat of Example 5 and the comparative example. Figure 28 is a microscope photograph of the state of the surface of the valve seat immediately after the ultrasonic bonding. _____47 -_ __ This paper size applies Chinese National Standards (CNS) Λ4 Regulations (21〇x 297 ^ t) '' ^ ----- (Please read the precautions on the back before writing this page) • Install- 424 025 * Λ7 Α7 __J7 V. Description of the invention (45) Fig. 29 is a micrograph of a valve-like material in a joint shape in Example 2. Fig. 30 is a micrograph of a valve wire surface domain state after a pull-out test. Fig. 31 is a microscope photograph of the joint state between the valve seat and the test piece in Example 5. Fig. 32 is a graph showing the relationship between the applied pressure and the pull-out load when joining. Fig. 33 The distance and hardness change from the self-joining surface of the test piece. Figure 34 shows the hardness change before and after the valve seat is connected during continuous energization and pulse energization. Graph "Figure 35 is a graph showing the relationship between the distance between the self-joining surface of the test piece and the change in hardness during continuous energization and pulse energization. Fig. 36 is the result of the pull-out load measurement test during continuous energization and pulse energization. Fig. ° Fig. 3 An illustration of the 'embedding amount y' in the 7-series embedding measurement test. Fig. 38 The relationship between the time since the start of pressurization and the embedment amount y. Fig. 3 The 9-series valve seat is The graph of the relationship between the distance between the self-joining surface of the test piece and the change in hardness under the sintered forged material and the melt-impregnated sintered material. Fig. 40 shows the joint between the valve seat and the test piece composed of the sintered and forged material. Micrograph. ~ Figure 4 1 is a microscope picture showing the joint shape of the valve seat and the test piece made of a sintered and forged material # Further enlarged. ~ Figure 4 When the iron-side molten reaction layer and the material layer are formed on the valve seat, / 48-This paper size is applicable to the Chinese national standard (CNS> A4 size (210X297 mm). Please read it first. Note on the back

Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 4 24 02 5 ^ V. Description of the Invention (46 Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 Sale 7 Where fusion plating is performed and where ultrasonic plating is performed, Fig. 43 is a microscope photograph of the state of the surface of the valve seat immediately after performing the hot-dip plating. Fig. 44 is a microscope photograph of the state of the surface of the seat immediately after the ultrasonic recording. Micrograph of the joint state of the valve seat and the test piece during the 45-series fusion plating. Figure 46 Micrograph of the joint state of the valve seat and the test piece during the ultrasonic plating. Fig. 4 Before the joint of the 7-series cylinder head body The shape corresponding to Fig. 4 is a modification example in which the shapes are different from the first to fourth embodiments. [Description of Symbols]

1 Cylinder head (joining metal parts) 2 ΆCylinder head body (second metal part) 2a Joint surface 2b Suction and exhaust ports 3 Valve seat 3a First joint 3b Second joint 5 Iron-side molten reaction layer (solder and Diffuse sound between the bases) 6 Melt reaction layer on the aluminum side (diffusion layer between the solder and the steam red head body) 7 Solder layer 14 Solder bath-49-This paper size is applicable to China National Standard (CNS) Α4 size (2 丨 0 X 297 (Mm) 424 025 Correction: 2 ---- 1-= (-two 1-:-=-current value (kA) pressure during bonding (N) Θ l (rad) seat shape solder coating method 9807 0.35 Μ Ο Example 1 9807 0.35 Ultrasonic Example 2 9807 0.35 Thick Wall Ultrasonic Example 3 9807 0.52 Thick Wall Ultrasonic Example 4 29420 0.52 Thick Wall Ultrasonic Example 5 29420 0.52 Thick Wall 1 Comparative Example [Ϊ 铖] 87115343quail-#-洤 奇 蹀 肺 蹀 冲 势 洛 To resign jEWS9Hfr5 5 424 025 r Γν-ι-.mM, == '1- · -5 »* 1 0.5 ～ 1.5 0.5 ～ 1.5 Uj ι ο Ο ι Η -* Ον Η η 5.0 ～ 10.0 1 1 ι— * Ο ι U) ο ζ 1 〇1 〇ο 'Private ο KJi Ιλ ι 00 ο π 10.0 ~ 15.0 to 〇1 σ \ ο ο h— * 1 ο ο U) 1 ο 00 〇 7.0 ～ 18.0 10.0 ～ 20.0 10.0 ～ 20.0 11.0 ～ 18.0 η 1 Η-1 〇 -1 U) ο Η- * k &gt; ι u &gt; Dagger U) Ο winter 1 ο ι Κ) ο ο 1 Ο 00 ο η 1 I 0 ～ 0 · 34 1 &lt; remaining remaining remaining remaining [&gt; 2] A2d025

Claims (1)

Printed by the Shell Standard Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Ab! Heated at the above temperature m 乂 According to the special method of joining metal parts, in which the method of supplying current in the step of pressure and reverse heating is to supply the pulse current with repeated high and low current. 4. The method for joining metal parts according to item 1 of the scope of patent application, wherein the thermal expansion coefficients of the two metal parts in the step of far-liquid phase diffusion bonding of the first and second metal parts are different, and the first metal part is pressed against the first The two metal parts are abutted on the joint surface; the two metal parts are provided by the patent application 124 02 5, No. 87115343 Chinese patent application amendment (May, 89) g | Application patent scope 1. Kind of joint The method for joining metal parts is to join the first and second metal parts, and includes the following steps: forming a solder layer on the surface of the first metal part and under the layer (diffusion layer I step; the diffusion The layer is formed by diffusion which is lower than the melting point of the two metal part and is easy to react with the second metal part to form a eutectic or a solder having a composition near the surface into the above surface; and a first and a second part which will be filled with solder in between. The two-metal part is pressurized at a temperature higher than the melting point of the solder, and a diffusion layer is formed on the surface of the second metal part, so that the solder passes through the second metal part. Then, the melting point is increased, and then the excess core molten solder is extruded from the contact surface of the two-metal part, thereby obtaining a bonded metal part from the two-metal part by liquid-phase diffusion bonding of the two-metal part on the surface of the two-metal part. 2. The method for joining metal parts according to item 丨 of the patent application park, wherein in the steps of pressure and heating, the two metal parts are under the opposite contact of the two surfaces, ^ between the two metal parts. Supply current, and apply to China National Liang Zhun (CNS &gt; A4 specification (21〇 &gt; &lt; 297 public magic) ---------- order ------- r ( (Please read the note on the back before filling in this page) 8 8 8 8 ABCD 42Λ025 6. The scope of patent application-a higher initial current during the pre-heating period, which is heated and then a lower current than the initial current 5_ The method of joining metal parts according to item 4 of the scope of the patent application, wherein in the step of pressing and heating, the predetermined current supply period is set to start the supply of current until the first metal part is moved to the standby state. With the second metal part To the predetermined position for joining. 6. The joining and method of metal parts according to item 4 of the scope of patent application, wherein in the step of pressing and heating, the predetermined current supply period is set to start from the supply of the starting current. For a long period of time 7. The method of joining metal parts according to item 4 of the patent application park, wherein in the step of pressing and heating the first metal part on the second metal part, the first metal part is It is buried in the second metal part, and the predetermined initial current supply period is set to start from the current supply until the first metal part is buried in the second metal part at a predetermined position to be joined. 8. According to the scope of the patent application The method of joining metal parts according to item 7, wherein the 4 starting current is set to a current necessary to promote the embedment of the first metal part into the second metal part; and the current for slow cooling is set to limit the first metal The component is further buried with the necessary current in the second metal component. % 9. A method for joining metal parts according to item 4 of the scope of the patent application, wherein the first metal member is a ring member and the second metal member is formed to have a joining surface surrounding the outer periphery of the ring member. 1 (1 The method of joining metal parts according to item 1 of the scope of patent application, wherein the first metal part is composed of Fe-based materials, and the second metal part is -2 CNS) A4 ^ (210X297 mm) ---------- ί · ------------ ΐτ ------ c. (Please read the first Please fill in this page again for the item) Printed by the Central Standards Bureau of the Ministry of Economic Affairs and the Consumer Cooperatives 42Λ Α8 B8 C8 D8 η series material. 11. The method of joining metal parts according to item 10 of the patent application, wherein the solder is a Zη-Al series alloy containing 92 to 98% by weight of 211. 12. According to the scope of the patent application The method for joining metal parts according to item 10, wherein the Zη-A1 series alloy is a eutectic alloy containing 95% by weight of Zn. 13. According to the method for joining metal parts according to item 1 of the patent application scope, the first metal The part is made of sintered material. 14. According to the method of joining metal parts in the scope of patent application No. 13, the firing The material is forged. 15. According to the method for joining metal parts according to item 13 of the patent application scope, the sintered material is a material with high conductivity before being immersed in the pressure and heating steps. 16_ According to the scope of patent application The method of joining metal parts according to item 15, wherein the highly conductive material is a Cu-based material. 17. The method of joining metal parts according to item 1 of the scope of patent application, wherein in the step of forming a solder and a diffusion layer The solder and diffusion layer of the first metal part are formed with a total thickness of 1 μm or less. 1 & The joining method of metal parts according to item 17 of the scope of patent application, wherein in the step of forming the solder and diffusion layer, the first Metal parts are immersed in a solder bath, and a solder ^ diffusion layer is formed thereon by the application of ultrasonic vibration. 19. A method for joining metal parts according to item 1 of the scope of patent application, wherein the pressure and heating In the step, when the two parts are joined by liquid-phase diffusion, the second metal part is plasticized by pressing the first metal part toward it. -3- Among them Ί ^ ^ ^ nnnnni (Please read the note f on the back before filling this page,} t) A4 «^ (210X297 ^ *) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ^ 24 025 4¾ A8 B8 __ C8 ------ D8 VI. Deformers who apply for patents. 2．-A method for joining the second metal parts of the _ ΑΑι series of Fe-based materials, including the following steps:-In the above-mentioned joint surface of the first-metal parts In the above, the step of forming a material layer through a -diffusion layer is formed by diffusing a solder composed of% wt% Zn-Ze · A1 eutectic alloy into the above-mentioned joint surface; and The aforementioned first and second metal parts are interposed between them, and when the current is supplied, I is added at a temperature higher than the melting point of the feeding material, and a diffusion layer is formed on the surface of the first metal part, so that the solder can The melting point is increased by increasing the A1 component from the second metal part, and then the excess molten solder is extruded from the contact surface of the second metal part to thereby join the two diffusion layers on the surface of the above two metal parts by liquid phase diffusion. And obtained from the two metal parts Steps to get all metal parts. 21. —A joining device for joining metal parts, which is used for joining the first and second metal parts, including: a soldering device, forming a solder layer on the surface of the first metal part and diffusion under the layer The diffusion layer is formed by diffusing a solder having a lower melting point than the two metal part and easily reacting with the second metal part to form a eutectic or a composition near the surface into the above surface; and a bonding device having a pressure mechanism For adding the first and second metal parts with the solder interposed therebetween, and a heating mechanism for adding the two metal parts at a temperature higher than the melting point of the solder, and on the surface of the first metal part A diffusion layer is formed on the top surface, so that the solder passes through the second -4-This paper size is applicable to China National Standard (CNS) A4 specification (210 × 297 mm) --------------- 1T- ----- Γ. (Please read the notes on the back before filling out this page) Printed by the Consumers' Cooperative of the Central Government Procurement Bureau of the Ministry of Economic Affairs A8 424 025 4 cl VI. Increase in the scope of patent applications Metal components increase the dazzling point And then from the second metal The contact surface of the part extrudes excess molten solder, thereby obtaining a joined metal part from the two metal parts by liquid phase diffusion joining the two diffusion layers on the surface of the one metal part; the heating mechanism has an electric heating controller, It is used to heat the two metal parts by supplying current between the two metal parts at the above-mentioned temperature in a manner of surface-to-surface contact. 22. The bonding device according to item 21 of the patent application, wherein the electric heating controller generates and supplies a current by using a pulse current with repeated high and low currents. 2α The bonding device according to item 21 of the scope of the patent application, wherein the thermal expansion coefficients of the first and second metal parts of the liquid-phase diffusion bonding are different, and the pressing mechanism presses the first metal part onto the second metal part to The joints are in contact with each other; the heating mechanism is to slowly cool the two metal parts by heating the two metal parts by supplying a higher starting current for a predetermined period of time, and then supplying a lower current lower than the starting current. 21. The bonding device for metal parts according to item 23 of the scope of the patent application, wherein the "1C 4 controller" sets the predetermined current supply period so that the supply current starts until the first metal part is moved to the second metal part to be joined. Up to the predetermined position. 2Γ> The bonding device for metal parts according to item 23 of the scope of the patent application, in which the 玟% thermal controller sets a predetermined current supply period to a constant long time since the current is supplied. The joining device for metal parts according to item 23 of the scope of application for patent, wherein the joining device is a first metal part to be buried in a second metal part (21 () χ297 public envy) --- I ----------- Order ------ C (Please read the note on the back before filling this page) 424 025 '«» A8 B8 C8 -------- D8, patent application pressure and heating; In addition, the electric heating controller sets a predetermined initial current supply period from the start of the supply of the initial current to the first metal component at a predetermined time. The second metal component is buried at the position to be joined. 27. The bonding device for metal parts according to item 26 of the scope of the patent application, wherein the electric heating controller sets the starting current to a necessary current that can promote the embedding of the first metal part into the second metal part; The current is set to be a necessary current that can restrict the first metal part from being further buried in the third metal part. 28_ —A joint metal part having two metal parts joined in a liquid-phase bonding state via two diffusion layers, each diffusion layer being formed on a foot joint surface of each metal part, wherein the diffusion layer of the first metal part It is formed on the surface by reacting with the solder applied on the surface, the solder has a lower melting point than the two metal parts, and can form a eutectic with or near the second metal part; the above second metal part The other diffusion layers are formed of the solder described above, and the solder is a liquid phase diffused to the surface of the second metal component to increase the melting point of the solder by increasing the components of the second metal component in the solder. Instead, the joining metal parts according to item 28 of the scope of patent application, wherein the first metal part is composed of an Fe-based material, and the second metal part is composed of an A1-based material; the solder is composed of a Zll-based material. : See joining metal parts according to item 29 of the scope of the patent application, wherein the solder is a Z n _ A1 alloy ′ which contains 9 2 to 98% by weight of Z η. 31_. The bonded metal part according to item 30 of the patent application park, wherein the Zη_ A 1 series alloy is a eutectic alloy with Z η being 95% by weight. -6- This paper is approved to comply with Chinese Standards (CNS) 44 (210X297 mm) -------- Clothing—— (Please read the notes on the back before filling this page) Order the Ministry of Economic Affairs Printed by the Central Bureau of Standards, Shellfish Consumer Cooperative, 424 025 Α8, B8, C8, D8, and applied for a patent 囷 32. According to the application of the scope of the patent application No. 28 of the joining metal parts, wherein the first metal part is made of high-impregnated materials The two constituents of the sintered material section. 33. Joining metal parts according to item 32 of the scope of patent application Metal parts are forged sintered materials. 34_ Joining metal parts according to item 32 of the patent application park Electrical materials are Cu-based materials. 35. The bonded metal parts according to item 28 of the patent application park, in which the first step is to form the solder and diffusion layer of the high-conductivity consumer printing cooperative in the Central Standards Bureau of the Ministry of Economic Affairs, which is below 1 μm. _ The metal scope of the patent, 'wherein the seven parts of the engine are connected to the steam engine 丨 —the body of the cylinder head of the metal part' is equipped with suction and exhaust ports, and the second metal part is 阙The seat is connected to the suction and exhaust ports of the above body. 37. The bonded metal part according to item 28 of the scope of the patent application includes one in which an alloy part formed by the reaction of two diffusion layers is formed at a part of the interface between the two layers. 38. A bonded metal member having a first metal member composed of an Fe-based material and a second metal member composed of an A1-based material, which are joined in a liquid phase diffusion bonding state through two diffusion layers interposed therebetween. Each diffusion layer is formed on the joint surface of each metal component; wherein, the diffusion layer of the first metal component is formed on the surface by reacting with the solder applied thereto, and the solder has Zn- Al-based eutectic alloy; the other diffusion layers of the above-mentioned second metal parts are formed of the above-mentioned materials, and the solder system is a total thickness of the solder and the diffusion layer U'x :. Rate (CNS) A4 specification (210X297 male thin) —II ----- 〇 ------ # ------ r (please read the precautions on the back before filling this page) / 12 ^ 025?! D8 6. The scope of the patent application liquid phase diffusion to the joint surface of the second metal component, in order to increase the melting point of the solder by increasing the A1 component of the second metal component in the solder. 111 · ----- X 』------ Order ------ f (Please read the notes on the back before filling out this page) Printed by the Staff Consumer Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs-8- This paper size applies Chinese National Standard (CNS) A4 scale (210X297 mm)