TW477720B - Method for forging and forming valve seat - Google Patents

Abstract

Disclosed is a method for forging and forming valve seat, comprising the steps of setting the left and right-side bodies for constructing an entire valve apart by an appropriate distance through a neck portion; directly forging a blank with a water inlet, a ball valve base, a limiting base, a water outlet, while forming a central through hole simultaneously; forming the opposing ends of the each neck portion with frictional, fusion faces of equal wall thickness, such that the fusion faces of the water inlet, ball valve base, limiting base, and water outlet to be frictionally fused together so as to form the left and right-side bodies; forming a curvature with a curvature identical to that of the ball valve through the valve receiving chamber of the valve base; forming a concave groove to be embedded with a water seal at the peripheral near the center through hole of the ball valve seat, wherein the front end of the center through hole of the ball valve seat is machined into a left seal ring with a chamfer; forming a further concave groove at the front of the center through hole of the limiting base of the right-side body to be embedded with a further water seal, wherein the front end of the center through hole of the limiting base is machined into a right seal ring with a chamfer; urging the two water seals of the ball valve tightly together prior being placed in the ball valve receiving chamber so as to form a valve seat that is similar to that is integrally forged, so as to reduce material cost, to reduce lead time, and to maintain rigidity of the forged body.

Description

477720 & No. 87119943 You π: V. Description of the invention (1) The present invention is a method of applying a forged shape to the seat, and applies the forging method to forge the seat into a water seat first. Second, the valve seat, the limit seat and the outlet seat are welded to form the left and right bodies, respectively. = ^ = The center through hole for forging can be formed—and formed, # to reduce material waste and shorten processing time; further, use ball valve seats And the right and left sealing rings of the limit seat, provide direct pressure ball valve arc surface when leakage is critical, to prevent leakage, to prevent disasters, when there is no liquid or gas in the pipeline, a repair, Those who use the safety benefits. Most of the metal bases that are connected to I are made by casting. Because of the casting, the left and right bodies can be integrally formed, and most of the initial embryo has been formed inside and outside. Partial processing and drilling can complete the ordinary seat; only, in the casting molding, air bubbles are easily generated in the material. In order to reduce the sand holes generated by the air bubbles on the surface, it is necessary to produce the original embryo. Thicken it, and then process the primordial embryo inside and outside to the required thickness $, to reduce the generation of sand holes. Compared with the material to be removed, it is a large, good cost, and the sand holes cannot be completely avoided. The rate is always high = down. If the defective product flows into the market, it often causes leakage. When the gas is 2 or repaired, the fire caused by electric welding will be unavoidable, and the disaster caused by it will be seen from time to time. Due to the aforementioned defects in the casting, the industry is attempting to forge the shape of the seat to eliminate the defects of the sand holes. 1 is 2 Please refer to the first figure: Forging the shape for the industry The produced ^ = embryo, in order to achieve the purpose of one-piece molding, the left and right main bodies A1 and A2 are forged with bedroom forging technology. Due to the limitation of the molding mold after molding, it can be smoothly page 5 477720

Case No. 87119943 on page 6. V. Description of the invention (2) To be opened properly, the vertical edges of Al and A2 must be formed in the mold, and the necessary A13 must be formed in the mold at the same time. The internal basis such as the left and right bodies of Al and A2 is false. The weight of the material used for this molding will cause complex processing and even the disadvantages of the molding of the material. However, due to the high material, users should look forward to it. Fear is a major regret. When there is further, the habitual ball valve seat body will inevitably age, and a gasket used to control the dangerous gas' liquid will be produced. Due to aging, there is no longer an unexpected danger. How to stop the line of defense? 'And seize the opportunity to seek another priority for improvement. In view of the above-mentioned lack of research, the main purpose of the present invention has finally been developed. The left and right bodies of the composition are respectively forged into a water inlet seat and a correction provided with a withdrawal angle. Form a withdrawal die slope A 11-^ r ^ r ^ rAl through-holes Al2, A22 and the right body Al, A2 of the ball, which should be provided in the shape of the original embryo and the seat itself, and processed. If it is emptied, the demand will inevitably increase, and it will be inconvenient and costly in processing procedures. Such forging, when it can solve the high cost and processing cost, is relatively 'not able to make consumers happy to improve their manufacturing methods. When it is used for a long time, its internal assembly leaks, and like some ball valve transportation control, and once the ball valve achieves the effect of leak prevention, it is inevitable that the ball valve seat body is added to the emergency, it is the failure of the ball valve seat body. The inventor has filed an invention patent based on the missing age. The application is to provide an application that separates the complete ball valve by the appropriate position of the neck. The valve seat, a limit seat, a center right body, A21, and there is no single room. In addition to the shape, due to the working hours, the casting price is extremely useful. In fact, the gasket seat is a temporary step that will occur in the seat and is concentrated. Among them, the seat and the water seat directly 477720 ____ Case No. 87119943 V. Description of the invention (3)

The initial embryo has its central through hole formed at the same time, and the end faces of each neck form a friction welding surface, and the thickness of the hole wall of the friction welding surface is equal. 俾 Weld the water inlet to each other to form left and right. The main body is formed into a concave arc equal to the circumference of the ball valve through the processing of the ball valve receiving chamber of the ball valve seat, and a groove is formed near the central hole of the ball valve seat through processing to form a groove for the water stop sound coil to be embedded, and The front end of the center through hole of the ball valve seat is processed with a < chamfered left seal ring, and then the front end of the center through hole of the limit seat of the right body is also processed to form a four-slot 'for another water washer to be embedded, and the limit The front end of the center through hole of the seat is also processed into a chamfered right seal ring; and then drilled in the water inlet seat, ball valve seat, limit seat, and outlet seat to form a fixed hole and handle perforation for The assembly of handles and bolts are assembled, so that the two water-proof gaskets of the ball valve are tightly positioned in the ball valve accommodation room to form a ball valve seat body that is integrally formed as a forged body. this The strength of the body. As for the rest, I will describe the manufacturing method and operation of the present invention in detail with the illustrations and descriptions below: The first left part is set to a zone type; please enter the initial embryo, molding, first, please refer to the first The picture shows: the right body A1 and A2 of the complete fan base are modeled, and their necks ", β2 are the spacers, and four sets of forging dies are made", and the four parts are directly forged into wheat. As shown in the second and third diagrams, each of the center through holes 112, 2 22, and 22 can be obtained by forging four sets of dies into a water seat 1, a ball valve seat 2, a limit seat 3, and two water seats 4, respectively. 312, 412 and the end surfaces of the necks 11, 22, 31, 41 form a friction welding surface, 311 '411', and the thickness of the hole wall of each friction welding surface is similar.

477720 Case No. 87119943 V. Description of the invention (4) When the welding surfaces 111, 2 2 1, 3 11 and 411 of the water inlet seat 1 and the ball valve seat 2 and the limit seat 3 and the water outlet seat 4 are applied, friction is applied respectively. Welding method; please cooperate with the third, fourth, and fifth figures as shown in the figure. When the weld surface 111 of the water inlet 丨 and the weld surface 221 of the ball valve seat 2 and the dazzle surface 311 of the limit seat 3 and The welding surfaces 411 of the water outlet 4 are respectively combined into a single body through frictional welding to form the left and right bodies A1 and A2. The melting frits 5 resulting from the melting are protruding from the central through hole and the neck respectively. On the outside of the welding surface, the punching rods are used to smash the protruding blocks $ in the central through holes of the left and right bodies A 1 and A 2 to cut off and separate them, so that a smooth surface is formed in the central through hole. , And remove the protruding frit 5 from the neck to achieve the beautiful appearance without leaving any traces; and then process the ball valve housing 2 1 of the ball valve seat 2 into a concave arc 2 11 equal to the ball valve C-circle, A left groove 2 2 3 is formed on the edge of the hole near the center through hole 2 2 2 of the ball valve seat 2 for the left water cushion. 23 is inserted, and a chamfered left seal ring 22 4 is added to the front end of the central through hole 222 of the ball valve seat 2; the right side groove 312 uranium end of the limit seat 3 of the right body A2 is also processed to form a right groove 312 for another right water-proof washer 2 2 and it is processed into a chamfered right seal 3 2 2 at the front end of the center through hole 3 1 2 of the limit seat 3: and then separately on the water seat 1 ball valve seat 2, limit seat 3,

The outlet seat 4 is drilled to form a fixing hole 6 and a handle hole 9 'for handle assembly, each bolt group 7 and a leak-proof gasket 8 to be assembled, so that the ball valve C is forced by two water-proof washers 2 3, 3 3 Positioned tightly inside the ball valve accommodating chamber 2f to form a common seat body that is integrally formed by forging, which saves material costs and shortens the manufacturing time, while maintaining the strength of the forging itself; see $ A _ ·· Can better apply left chamfer seal 2 2 4 and limit 477720 in ball valve seat 2

The right chamfered seal ring 3 2 2 at the front end of the seat 3, at -H, 33, aging and rupture, and gas or liquid leakage is critical = left and right water washers 23 forced I to the left and the bolts to form a seal ring 22 4 , 32 2 Directly against the ball valve (: arc surface is tight ^^^^^^ 后 After the liquid and gas in the pipe are completely output in the pipe, prevent leakage when it is really ^ ^, and reduce the loss. # 仃 换In order to avoid danger, as mentioned above, the application of the present invention is implemented because of the main components. The components are first forged, which can effectively solve the disadvantages of hole-casting feathers in general casting, and it is completed by vertical forging. Good computerized automated car and drilling operations can increase productivity and quality and are easy to control. Reducing the defect rate, increasing production capacity and reducing costs can increase market share. It has actually met the patent law's promotion of industrial development and creative requirements. I urge you to read the book, and Huineng will grant the patent for invention as soon as possible.

477720

Brief description of the drawings (1) The illustrated part (the first, the fourth, the fourth, the fifth, the sixth, and the second figures) The part of the figure is a prototype of the forging and the required processing. Three-dimensional exploded view of the main parts of the invention before welding. : The three-dimensional decomposition of the friction welding after reprocessing according to the present invention is a schematic cross-sectional view of the assembly after the welding assembly of H 1 month friction hall. ′, Χ, the cross-sectional view of the assembly is completed after processing. Left body A1 (shared with the case) Right body A2 (shared with the case) Left and right body necks Bl, B2 (learned part) Extraction mold slope A 11, A 2 1 (learned part Copies) Center through hole A12, A22 (known part) Ball valve accommodation room A 1 3 (known part) Water inlet seat 1 Water inlet neck 1 1 Water inlet welding surface 11 1 Water inlet center through hole 11 2 Limit seat 3 Limit seat neck 3 1 Limit seat welding surface 3 1 1 Limit ^: Seat center through hole 3 1 2 Right groove 321 Right chamfer seal 3 2 2 Ball valve seat 2 Ball valve accommodation chamber 2 1 Four arc 2 11 Ball valve seat neck 2 2 Ball valve seat welding surface 2 2 1 Ball valve center through hole 2 2 2 Left groove 223-Left chamfer seal 2 2 4 Left water washer 2 3 Water outlet 4

Page 10 477720 Case No. 87119943 Λ_ Said to modify the neck of the water seat 41 Outlet seat fusion surface 4 11 4 The central through hole of the water seat 41 2 The diagram briefly explains the right stop ring 3 3 Each fixing hole 6 Each ^ Group 7- Leakproof gasket 8 Perforated handle 9

Welding protruded frit ball valve C

Page 11

Claims (1)

477720 Case No. 8711 ^ 42 VI. Scope of patent application A method of applying a forged shape to a pedestal body; the left and right bodies of the Li body are modeled on the basis of Fan Yu, "two + swords with their necks are When the position is the forming step, it is: (a) Forging the initial seat of the stopper seat-* out of the four sets of molds, type J, and make the thickness of the hole wall of the face forming surface of each m part equal; (b) When The fusion surface of the water inlet seat and the fusion surface of the water outlet seat are formed as a body 5 to form the left and right bodies protruding from the central through hole and the neck (C), and then the punches are cut and punched separately from the left and right J. Make the middle and outer surfaces 5 • · Pass the neck circumference (d) through the corresponding concave arc of the ball valve seat and form a left groove near the back of the ball for the front end of the left water hole to be processed with a chamfered left seal Right (e) and then the restriction groove of the right body is provided for the other-the front of the right water stop cushion > also Processing was-chamfered right seal to create a water inlet seat, a ball valve seat, and directly obtain the central through hole at the same time to form a friction welding surface, and each friction welding and the welding surface of the ball valve seat, and the limit surface 'respectively through friction Welding is combined with the bulging frit produced by its dissolution, the outside of the smelting surface; the bulging slab inside the central through hole of the main body has a smooth inner surface and is removed by the sintering sinter; The processing and forming of the chamber is the hole edge of the center through hole of the ball valve seat, which is processed into the ring, and is in the center ring of the ball valve seat; the front end of the center hole of the seat is also processed into the ring, and is in the limit position. Seat center through-hole ring; — So 'forging directly into the water seat, ball valve seat, limit seat water seat' by forging, and then drilling to form the fixing hole and handle hole, Page 12 477720 _ Case No. 87Π9943_ Amendment Date 6. The scope of the patent application is for assembly of handles, bolt groups and leak-proof gaskets, so that the ball valve is tightly positioned in the ball valve housing by two water-proof washers to form Just like the ordinary seat that is forged integrally, it can save material cost and shorten the manufacturing time, and can maintain the strength of the forging itself and reduce the defect rate. Page 13