CN203663914U - Trimetal breaking hammer for hammer crusher - Google Patents
Trimetal breaking hammer for hammer crusher Download PDFInfo
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- CN203663914U CN203663914U CN201320816231.0U CN201320816231U CN203663914U CN 203663914 U CN203663914 U CN 203663914U CN 201320816231 U CN201320816231 U CN 201320816231U CN 203663914 U CN203663914 U CN 203663914U
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- hammer
- tup
- hammer handle
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Abstract
The utility model provides a trimetal breaking hammer for a hammer crusher and belongs to the technical field of engineering mechanical equipment manufacturing. The trimetal breaking hammer comprises a hammer handle, a hammer head and a binding course, wherein the binding course is arranged between the hammer handle and the hammer head; the binding course, the hammer handle and the hammer head are fixedly connected into a whole through infiltration heat treatment; then quenching and medium-temperature tempering are performed, so that the trimetal breaking hammer is obtained. According to the trimetal breaking hammer provided by the utility model, the hammer handle, the hammer head and the binding course are combined into an organic whole, so that metallurgical bonding of the hammer handle, the hammer head and the binding course is realized, and the interface bonding strength is improved significantly; the breaking hammer is enabled to have a fine and dense metallographic structure through a heat treatment system, so that the hardness and toughness of the breaking hammer are improved, and the service life of the breaking hammer is prolonged. The breaking hammer meets the requirements of efficient low-consumption safe modern production, so that the realization of industrialization is facilitated; the breaking hammer has the advantages that the preparation technology is simple, the operation is convenient, and the prepared breaking hammer is abrasion resistant, and impact resistant.
Description
Technical field
The utility model relates to hammer mill accessory, refers to especially three metal quartering hammers for a kind of hammer mill; Belong to engineering mechanical device manufacturing technology field.
Background technology
Quartering hammer is the crucial accessory on the hammer mill that uses of the industry such as building materials, mine, metallurgy, chemical industry, electric power, is also consumable accessory.Tradition quartering hammer forms mainly with potassium steel casting or the forging of 65Mn one; wearability can not adapt to the needs of efficient modern production far away; cause frequent shutdown to be changed because service life is short; reduce the running rate of equipment; cause production cost to increase sharply, the broken line of even a lot of sandstones or mine is because the low life-span of quartering hammer causes frequent stopping production.
The quartering hammer using in market now has following several situation: 1, entirety adopts the quartering hammer shock resistance that the high material of toughness is made, but not wear-resisting.2, the quartering hammer wearability that entirety adopts high-abrasive material to make is superior, but not shock resistance.The quality problems of quartering hammer are perplexing production unit always for a long time, and have caused the significant wastage of iron and steel resource.
There is afterwards bimetallic quartering hammer, as the Chinese invention patent of Granted publication CN102000621A discloses a kind of crusher in crushing hammer, it comprises hammer handle and hammer tip, hammer handle is made through cutting and machining of steel plate, hammer tip adopts alloy rich chromium cast iron on hammer handle, to become Integral-crushing hammer, imbedding hard alloy bars in recombination process through metal pattern composite casting.This quartering hammer wearability is improved greatly, the shortcoming of the method is that processing technology is very loaded down with trivial details, overall performance stability is inadequate, especially owing to there is no metallurgical binding, interface bond strength is difficult to the stable state that reaches desirable, range of application is very narrow, be only applicable to the disintegrating machine of crushing quartz rock, when being applied in Large Crusher, owing to thering is very large impulsive force, interface bond strength is inadequate, be easy to cause quartering hammer to rupture from interface, thereby destroy the crushing chamber of disintegrating apparatus, cause equipment scrapping or personnel are damaged, can not meet the needs of safety in production, greatly limit the range of application of bimetallic quartering hammer.
The Chinese invention patent of Granted publication CN1307017C discloses a kind of composite quartering hammer and casting method thereof, first adopt electro-smelting metal carrier body material to form molten metal, then by WC particle and the mixed end face side of making paste and being placed in the die cavity of quartering hammer mould of binding agent, after drying, form preformed layer, start its rotating speed of vertical centrifugal-casting machine control, then carry out molten metal casting, after casting, the rotating speed of vertical centrifugal-casting machine is improved, rotate 3～10min, shut down cooling, the method moulding is simple, due to high rigidity and the high-wearing feature of ceramic particle in composite layer, protect matrix to avoid further wearing and tearing, but the quartering hammer of casting by the method is in the time of some large-scale disintegrating apparatus, need to bear the strong percussion of material, owing to there is no metallurgical binding, interface bond strength is low equally makes quartering hammer that composite often occur in actual moving process to separate with parent, cause quartering hammer premature failure.
The Chinese invention patent of Granted publication CN102423799A discloses the method for the synthetic steel bonded carbide casting of a kind of original position composite breaking hammer.It adopts technique of founding casing with vacuum, Ti powder, graphite powder, W powder and metal dust are mixed, add binding agent to make powdery paints paste, be filled in the working portion reinforcement groove or hole of quartering hammer foundry goods eps foam plastic pattern, in casting process, utilize the high temperature of molten steel to cause from spreading synthetic reaction, there is Ti+C → TiC and W+C → WC reaction, form TiC and WC base cemented carbide phase, molten steel is filled hard phase gap and is obtained original position synthesizing titanium carbide and Steel-bonded Carbide, and carbide mosaic is in quartering hammer working portion steel matrix.The shortcoming of the method is that both do not have abundant welding because carbide mosaic is in quartering hammer working portion steel matrix, and interface bond strength is still on the low side, and impact resistance is limited.
The Chinese invention patent of application publication number CN103056343A has been announced a kind of three metal composite casting Technology Development of Crusher Hammer Production methods, it adopts low-alloy steel or normal steel casting to pour into inner hammer handle, and preheating pours into compound hammer handle subsequently, the rich chromium cast iron of casting is again made three metal disintegrating machine tups, it is on the basis of former double-fluid double metal composite algorithm, cast out compound hammer shank position by coated method, then by the cast compound hammer handle of rich chromium cast iron and hammer tip position.It has solved hammer handle and has had better wearability problem, but still does not solve shock-resistant problem.
Above patent all adopts coated method moulding quartering hammer.Coated method moulding quartering hammer is because hammer handle is carried out in advance, in cold conditions, although cast temperature has reached 1400～1500 ℃, there is no temperature retention time and cooling rapidly, makes the interface bond strength of tup and hammer handle low, so shock-resistant ability.
Utility model content
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of wearability and shock resistance is good, three metal quartering hammers for the hammer mill of long service life.
Three metal quartering hammers for a kind of hammer mill described in the utility model, comprise hammer handle, tup and binder course; Between described hammer handle and tup, binder course is set, described binder course is combined and hammer handle and tup is fixed into entirety with the faying face of hammer handle, tup by infiltration heat treatment, described hammer handle is selected shock-resistant metal material preparation, described tup is selected wear-resistant metal material preparation, and described binder course is the metal material of tenacity excellent and molten state good fluidity.
A kind of described three metal quartering hammers for hammer mill of the utility model, faying face surface roughness Ra≤0.8 of hammer handle, tup.
A kind of described three metal quartering hammers for hammer mill of the utility model, the material of described hammer handle is selected from the one in ZG270-500, ZG310-570, ZG40Cr.
Three metal quartering hammers for a kind of hammer mill described in the utility model, the material of described tup is rich chromium cast iron, the trade mark of described rich chromium cast iron is KmTBCr15Mo or KmTBCr20Mo or KmTBCr26.
Three metal quartering hammers for a kind of hammer mill described in the utility model, the material of described binder course is selected from the one in copper, silver or aluminium alloy; Be preferably red copper, the trade mark of described red copper is T3.
Three metal quartering hammers for a kind of hammer mill described in the utility model, the thickness of described binder course is 1～1.5mm.
A kind of hammer mill of the utility model with the manufacture method of three metal quartering hammers sketch under, its preparation method comprises the steps:
The first step: by design tup, hammer handle size cast respectively tup, hammer handle, by the Surface Machining of tup and hammer handle faying face to surface roughness Ra≤0.8;
Second step: size, the shape processing binder course of pressing tup, hammer handle faying face place;
The 3rd step: by tup under, hammer handle is placed between the two at upper, binder course, after concordant periphery, vertical is placed reposefully, and by clamp; On described fixture, be provided with the clip for clamping tup and hammer handle junction; Clip is used for clamping around tup and hammer handle junction, may flow to too much the gusset of tup and hammer handle while preventing binder course high temperature infiltration;
The 4th step: carry out infiltration under protective atmosphere; Described infiltration adopts at the uniform velocity and heats up, step heat preservation method, when infiltration, controlling heating rate is 45～50 ℃/h, first be warming up to 380～420 ℃ according to the heating rate of setting, insulation is warming up to 580～620 ℃ and be incubated 2～3h after 2～3h, is then warming up to 780～820 ℃, insulation 2～3h, finally be warming up to 1080～1120 ℃ of insulation 3～8h, come out of the stove natural air cooling to room temperature after cooling to 400 ℃ with the furnace, obtain Integral-crushing hammer; Described protective atmosphere is any one in nitrogen, argon gas, hydrogen, vacuum protection atmosphere.
The manufacture method of three metal quartering hammers for a kind of hammer mill described in the utility model, Integral-crushing hammer is placed in to heating furnace, controlling heating rate is 45～50 ℃/h, first be warming up to 380～420 ℃ according to the heating rate of setting, insulation is warming up to 580～620 ℃ and be incubated 2～3h after 2～3h, then be warming up to 780～820 ℃, insulation 2～3h, be warming up to again 920～1050 ℃, be incubated 3～8 hours, come out of the stove, air blast is cooled to after 400 ℃, quartering hammer after naturally cooling to room temperature and being quenched, then the quartering hammer after quenching is heated to 400～450 ℃, be incubated 4～6 hours, with the cooling three metal quartering hammer finished products that obtain of stove.The blower equipment adopting when air blast is cooling is to meet the efficient axial-flow low-noise pipeline blower fan that JB/T2294-1999 requires, and its model is 5G-4, and air quantity is 9300m
3/ h, blast is 196Pa.
Principle and advantage:
Infiltration be exactly with fusing point than the low metal or alloy of goods under molten condition in the spontaneous fine-pored process of goods that enters of the capillary pressure without causing by infiltration phenomenon under External Force Acting.The surface of metal bath can be generally 10
3mJ/m
2magnitude, if this melt is zero to the infiltration angle of goods, in the time contacting with goods, because suffered capillary pressure reaches hundreds of atmospheric pressure, this pressure is enough to make this melt spontaneous infiltration of energy and is full of holes all in goods.Steel casting inside has the countless fine pores that are interconnected, and copper alloy and cast steel has less infiltration angle, at high temperature in protective atmosphere, realizes melt and can spread smoothly infiltration foundry goods under molten condition.
The utility model is in connection with being placed between the hammer handle and tup of surface roughness Ra≤0.8; entirety heating on the vertical superimposed special fixture being placed in high-temperature gas (argon gas) protection heating furnace; average tempering again after the infiltration heat treatment of no-welding type, has solved the wearability of quartering hammer and the difficult problem that toughness can not be taken into account in prior art.Heat by global procedures, through the infiltration heat treatment of no-welding type, the interface bond strength between hammer handle, tup, binder course is improved widely, thereby reach the object that simultaneously promotes quartering hammer wearability and toughness, its analysis of causes is as follows:
The utility model hammer handle used, tup are relatively sparse cast sturcture, hammer handle adopts good toughness, intensity is high, the material of strong shock resistance, tup adopts the extraordinary material of wearability, binder course is selected good fluidity and is had excellent flexible metal material, control surface roughness Ra≤0.8 of hammer handle, tup, this is conducive to the laminating of hammer handle and tup itself and binder course alloying element infiltration in hammer handle, tup, thereby reaches the object of raising interface bond strength, the heating of employing global procedures, by the heating rate of 40～50 ℃/h, first be warming up to 380～420 ℃, after insulation 2～3h, be warming up to 580-620 ℃ of insulation 2～3h, after being warming up to again 780～820 ℃ of insulation 2～3h, be warming up to 1080～1120 ℃ of insulation 3～8h when infiltration heat treatment, come out of the stove natural air cooling to room temperature after cooling to 400 ℃ with the furnace, when quenching heat treatment, be warming up to 920～1050 ℃, be incubated 3～8 hours, come out of the stove, air blast is cooled to after 400 ℃, the quartering hammer after naturally cooling to room temperature and being quenched, the strict speed heating up of controlling is that tissue cracking occurs in temperature-rise period, being incubated respectively 2～3h at 380～420 ℃ and 580～620 ℃ is in order better to control heating rate, simultaneously for the Elements Diffusion in binder course provides time enough, this is conducive to binder course and tup, the associating of hammer handle, be conducive to hammer handle 780～820 ℃ of temperature insulations, the austenite structure of tup changes fully, this is conducive to improve the performance of quartering hammer, at this temperature, be incubated, be conducive to accelerate the Elements Diffusion in binder course, also be conducive to binder course and tup, the associating of hammer handle, at 1080～1120 ℃ of insulation 3～8h, in the time that temperature reaches the fusion temperature of binder course, due to the melt of binder course and rich chromium cast iron and normal steel casting have less infiltration angle at the capillary pressure without causing by infiltration phenomenon under External Force Acting from being sent to hammer handle, the fine casting hole diffusion of tup, infiltration, and form new alloy with the element in hammer handle, tup, along with the prolongation of time, realize the abundant infiltration of liquid binder course and filled in foundry goods open texture gap, now also just completed the metallurgical binding of binder course and tup, hammer handle.Integral-crushing hammer is placed in heating furnace and again adopts at the uniform velocity intensification, step heat preservation method to be heated to 920～1050 ℃, be incubated 3～8 hours, come out of the stove, air blast is cooled to 400 ℃, the austenite that makes to be dissolved with sufficient carbon atom is as cold as below the critical-temperature Ms point that martensite starts to change soon, naturally cool to again room temperature and make the austenite martensite that is transformed into as much as possible, so just obtained high hardness number.In the time that binder course adopts copper, because copper is face-centered cubic lattice type, in infiltration process, tup and hammer handle supplemented other alloy atoms such as suitable iron, chromium, manganese, nickel, cobalt in copper in the past, so just can reduce in a large number distortion of lattice and dislocation plug collection on binder course and hammer handle cast steel layer and tup wearing layer combination interface, thereby improve greatly stability and the overall fracture toughness of quartering hammer.There is quenching structure internal stress in the expansion of volume when be transformed into the structure cell of martensite body-centred structure by the structure cell of austenite centroid structure, so the quartering hammer after quenching need to be carried out to average tempering heat treatment.When average tempering, control temperature and be 400 ℃～450 ℃, time and be 4～6 hours, cooling with stove; Temper is also attended by the transformation of retained austenite when making the martensite after quenching obtain tempering, so both eliminated the organize internal stress of rear remnants at breaking hammer head position of quenching, make again it organize crystal grain relatively tiny, crystal boundary is without Undissolving carbide item, thereby reach the object that improves hardness and strengthen toughness, therefore the comprehensive mechanical performance of quartering hammer effectively improves.This has also just reached the two high objects of wearability and impact flexibility.
Because selection is reasonable, control process is proper, make hammer handle, tup and binder course be combined into an organic whole, form metallurgical binding, interface bond strength is high, also make quartering hammer there is fine and closely woven metallographic structure simultaneously, in the service life of so just greatly having improved quartering hammer, particularly have more outstanding effect in Large Crusher, is applicable to the needs of efficient modern production.
Accompanying drawing explanation
Fig. 1 is the quartering hammer front view that the utility model relates to.
Fig. 2 is the quartering hammer cutaway view that the utility model relates to.
Number in the figure correspondence: 1-hammer handle, 2-tup, 3-binder course.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Referring to Fig. 1 and Fig. 2, the quartering hammer that this specific embodiment provides is made up of hammer handle 1, tup 2 and 3 three parts of binder course, and these three parts adopt respectively three kinds of metals of different nature, wherein hammer handle 1 material adopts the cast steel ZG270-500 of good toughness, and its alloying element content is referring to table 1; Tup 2 materials adopt wear-resisting rich chromium cast iron, are specially KmTBCr15Mo, and its alloying element content is referring to table 2; Binder course 3 adopts the T3 copper that high temperature infiltration performance is good and pliability is superior, and its thickness is 1.1mm.
Table 1
| Chemical composition | C | Si | Mn | P≤ |
| Scope | 0.4 | 0.50 | 0.9 | 0.035 |
| Chemical composition | S≤ | Cr | Mo | Ni |
| Scope | 0.035 | 0.35 | 0.20 | 0.30 |
Table 2
| Chemical composition | C | Mn | Si | Ni | Cr |
| Scope | 2.8 | ≤2.0 | ≤1.2 | ≤2.5 | 18 |
| Chemical composition | Mo | Cu | S | P | Rare earth |
| Scope | ≤3.0 | ≤1.2 | ≤0.10 | ≤0.06 | 1.3 |
The concrete manufacturing process of the present embodiment is as follows, first after hammer handle 1 and tup 2 being cast, process by precision optical machinery, composition surface grinding equalizing by hammer handle 1 with tup 2, and surface roughness Ra≤0.8, this is conducive to hammer handle 1 and tup 2 laminating and binder course alloying element high temperature meltings own are seeped in hammer handle 1, tup 2, thereby reaches the object that improves interface bond strength.Meanwhile, be processed in connection with layer 3 shape and size that match with hammer handle 1 and tup 2 joints and be beneficial to the moulding of high temperature infiltration.
By tup 1 under, hammer handle 2 is placed between the two at upper, binder course 3, after concordant periphery, vertical is positioned on the special fixture in high temperature argon protection heating furnace and clamps reposefully; On fixture, be provided with clip for clamping around tup 1 and hammer handle 2 junctions, while preventing binder course high temperature infiltration, may flow out to too much the gusset of tup and hammer handle; Carry out infiltration by infiltration Technology for Heating Processing, wherein infiltration Technology for Heating Processing is referring to table 3.
Table 3
| Holding temperature (℃) | 400 | 600 | 800 | 1080 | ? |
| Temperature retention time (h) | 2 | 2 | 2 | 8 | Be chilled to 400 ℃ with stove |
| ? | ? | ? | ? | ? | The air cooling of coming out of the stove |
The reason of processing arrangement is like this: for avoiding tissue cracking in temperature-rise period to occur, heating rate control is 45 ℃/h.400 ℃ and the insulation of 600 ℃ of temperature are beneficial to controls heating rate better.800 ℃ of temperature insulations are beneficial to austenite structure and fully change.1080 ℃ of temperature insulations are beneficial to the abundant infiltration of copper and fill foundry goods open texture gap.
After high temperature infiltration certain hour, hammer handle 1, binder course 3 and tup 2 metallurgical junction are synthesized an organic whole.After cooling to 400 ℃ with the furnace, come out of the stove natural air cooling to room temperature.
Afterwards, Integral-crushing hammer is placed in heating furnace and again adopts at the uniform velocity intensification, step heat preservation method to be heated to 970 ℃, is incubated after 5 hours, comes out of the stove, and air blast is cooled to after 400 ℃, naturally cools to room temperature, the Integral-crushing hammer after being quenched.
Integral-crushing hammer after quenching is placed in to heating furnace and after 5 hours, cools to room temperature through 420 ℃ of average temperings with the furnace, obtain the finished product that can put into production use.
So far the three metal quartering hammers that, embodiment 1 relates to are made completely.
After testing, the three metal breaking hammer head part hardness of embodiment 1 are HRC64, impact flexibility 27J/cm
2.
Referring to Fig. 1 and Fig. 2, the quartering hammer that this specific embodiment provides is made up of hammer handle 1, tup 2 and 3 three parts of binder course, and these three parts adopt respectively three kinds of metals of different nature, wherein hammer handle 1 material adopts the cast steel ZG310-570 of good toughness, and its alloying element content is referring to table 4; Tup 2 materials adopt wear-resisting rich chromium cast iron, are specially KmTBCr20Mo, and its alloying element content is referring to table 5; Binder course 3 adopts the T3 copper that high temperature infiltration performance is good and pliability is superior, and its thickness is 1.2mm.
Table 4
| Chemical composition | C | Si | Mn | P≤ |
| Scope | 0.5 | 0.60 | 0.9 | 0.04 |
| Chemical composition | S≤ | Cr | Mo | Ni |
| Scope | 0.04 | 0.35 | 0.2 | 0.3 |
Table 5
| Chemical composition | C | Mn | Si | Ni | Cr |
| Scope | 2.8 | ≤2.0 | ≤1.2 | ≤2.5 | 22.0 |
| Chemical composition | Mo | Cu | P | S | Rare earth |
| Scope | ≤3.0 | ≤1.2 | ≤0.10 | ≤0.06 | 1.3 |
The concrete manufacturing process of the present embodiment is as follows, first after hammer handle 1 and tup 2 being cast, process by precision optical machinery, composition surface grinding equalizing by hammer handle 1 with tup 2, and surface roughness Ra≤0.8, this is conducive to hammer handle 1 and tup 2 laminating and binder course alloying element high temperature meltings own are seeped in hammer handle 1, tup 2, thereby reaches the object that improves interface bond strength.Meanwhile, be processed in connection with layer 3 shape and size that match with hammer handle 1 and tup 2 joints and be beneficial to the moulding of high temperature infiltration.
By tup 1 under, hammer handle 2 is placed between the two at upper, binder course 3, after concordant periphery, vertical is positioned on the special fixture in high temperature argon protection heating furnace and clamps reposefully; On fixture, be provided with clip for clamping around tup 1 and hammer handle 2 junctions, while preventing binder course high temperature infiltration, may flow out to too much the gusset of tup and hammer handle; Carry out infiltration by infiltration Technology for Heating Processing, wherein infiltration Technology for Heating Processing is referring to table 6.
Table 6
The reason of processing arrangement is like this: for avoiding tissue cracking in temperature-rise period to occur, heating rate control is 48 ℃/h.380 ℃ and the insulation of 580 ℃ of temperature are beneficial to controls heating rate better.780 ℃ of temperature insulations are beneficial to austenite structure and fully change.1100 ℃ of temperature insulations are beneficial to the abundant infiltration of copper and fill foundry goods open texture gap.
After high temperature infiltration certain hour, hammer handle 1, binder course 3 and tup 2 metallurgical junction are synthesized an organic whole.After cooling to 400 ℃ with the furnace, come out of the stove natural air cooling to room temperature.
Afterwards, Integral-crushing hammer is placed in heating furnace and again adopts at the uniform velocity intensification, step heat preservation method to be heated to 1020 ℃, is incubated after 5 hours, comes out of the stove, and air blast is cooled to 400 ℃, then naturally cools to room temperature, the Integral-crushing hammer after being quenched.
Then the Integral-crushing hammer after quenching is placed in to heating furnace and within 4 hours, obtains the finished product that can put into production use through 450 ℃ of average temperings.
So far the three metal quartering hammers that, embodiment 2 relates to are made completely.
After testing, the three metal breaking hammer head part hardness of embodiment 2 are HRC65, impact flexibility 25J/cm
2.
Referring to Fig. 1 and Fig. 2, the quartering hammer that this specific embodiment provides is made up of hammer handle 1, tup 2 and 3 three parts of binder course, and these three parts adopt respectively three kinds of metals of different nature, wherein hammer handle 1 material adopts the cast steel ZG40Cr of good toughness, and its alloying element content is referring to table 7; Tup 2 materials adopt wear-resisting rich chromium cast iron, are specially KmTBCr26, and its alloying element content is referring to table 8; Binder course 3 adopts the T3 copper that high temperature infiltration performance is good and pliability is superior, and its thickness is 1.3mm.
Table 7
Table 8
The concrete manufacturing process of the present embodiment is as follows, first after hammer handle 1 and tup 2 being cast, process by precision optical machinery, composition surface grinding equalizing by hammer handle 1 with tup 2, and surface roughness Ra≤0.8, this is conducive to hammer handle 1 and tup 2 laminating and binder course alloying element high temperature meltings own are seeped in hammer handle 1, tup 2, thereby reaches the object that improves interface bond strength.Meanwhile, be processed in connection with layer 3 shape and size that match with hammer handle 1 and tup 2 joints and be beneficial to the moulding of high temperature infiltration.
By tup 1 under, hammer handle 2 is placed between the two at upper, binder course 3, after concordant periphery, vertical is positioned on the special fixture in high temperature argon protection heating furnace and clamps reposefully; On fixture, be provided with clip for clamping around tup 1 and hammer handle 2 junctions, while preventing binder course high temperature infiltration, may flow out to too much the gusset of tup and hammer handle; Carry out infiltration by infiltration Technology for Heating Processing, wherein infiltration Technology for Heating Processing is referring to table 9.
Table 9
The reason of processing arrangement is like this: for avoiding tissue cracking in temperature-rise period to occur, heating rate control is 49 ℃/h.420 ℃ and the insulation of 620 ℃ of temperature are beneficial to controls heating rate better.820 ℃ of temperature insulations are beneficial to austenite structure and fully change.1120 ℃ of temperature insulations are beneficial to the abundant infiltration of copper and fill foundry goods open texture gap.
After high temperature infiltration certain hour, hammer handle 1, binder course 3 and tup 2 metallurgical junction are synthesized an organic whole.After cooling to 400 ℃ with the furnace, come out of the stove natural air cooling to room temperature.
Afterwards, Integral-crushing hammer is placed in heating furnace and again adopts at the uniform velocity intensification, step heat preservation method to be heated to 1030 ℃, is incubated after 5 hours, comes out of the stove, and air blast is cooled to 400 ℃, then naturally cools to room temperature, the Integral-crushing hammer after being quenched.
Integral-crushing hammer after quenching is placed in to heating furnace and within 6 hours, obtains the finished product that can put into production use through 400 ℃ of average temperings.
So far the three metal quartering hammers that, embodiment 3 relates to are made completely.
After testing, the three metal breaking hammer head part hardness of embodiment 3 are HRC65, impact flexibility 22J/cm
2.
The mechanical performance of general bimetallic composite breaking hammer tup part is: hardness HRC58～61, impact flexibility 4～6J/cm
2.
The mechanical performance of the product of above embodiment gained is more known with the mechanical performance of general bimetallic composite breaking hammer tup part, adopt three metal breaking hammer heads of the utility model manufacture than high HRC4～6 of hardness of general bimetallic composite breaking hammer tup part, impact flexibility is 5～7 times of general bimetallic composite breaking hammer tup part.
The above is only the specific embodiment of the present utility model.Protection domain of the present utility model is not limited to this, any know those skilled in the art the utility model disclose technical scope in, the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (7)
1. three metal quartering hammers for hammer mill, is characterized in that: described three metal quartering hammers comprise hammer handle, tup and binder course; Between described hammer handle and tup, binder course is set, described binder course is combined and hammer handle and tup is fixed into entirety with the faying face of hammer handle, tup by infiltration heat treatment, described hammer handle is selected shock-resistant metal material preparation, described tup is selected wear-resistant metal material preparation, and described binder course is the metal material of tenacity excellent and molten state good fluidity.
2. three metal quartering hammers for a kind of hammer mill according to claim 1, is characterized in that: faying face surface roughness Ra≤0.8 of hammer handle, tup.
3. three metal quartering hammers for a kind of hammer mill according to claim 1, is characterized in that: the material of described hammer handle is selected from the one in ZG270-500, ZG310-570, ZG40Cr.
4. three metal quartering hammers for a kind of hammer mill according to claim 1, is characterized in that: the material of described tup is rich chromium cast iron, the trade mark of described rich chromium cast iron is KmTBCr15Mo or KmTBCr20Mo or KmTBCr26.
5. three metal quartering hammers for a kind of hammer mill according to claim 1, is characterized in that: the material of described binder course is selected from the one in copper, silver or aluminium alloy.
6. three metal quartering hammers for a kind of hammer mill according to claim 1, is characterized in that: the material of described binder course is red copper, the trade mark of described red copper is T3.
7. three metal quartering hammers for a kind of hammer mill according to claim 1, is characterized in that: the thickness of described binder course is 1～1.5mm.
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| CN201320816231.0U CN203663914U (en) | 2013-09-23 | 2013-12-11 | Trimetal breaking hammer for hammer crusher |
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| CN201320587880 | 2013-09-23 | ||
| CN201320587880.8 | 2013-09-23 | ||
| CN201320816231.0U CN203663914U (en) | 2013-09-23 | 2013-12-11 | Trimetal breaking hammer for hammer crusher |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611602A (en) * | 2013-09-23 | 2014-03-05 | 株洲方远航空铸造有限责任公司 | Three-metal quartering hammer for hammer crusher and preparation method of three-metal quartering hammer |
| CN106825511A (en) * | 2016-12-30 | 2017-06-13 | 常熟市电力耐磨合金铸造有限公司 | A kind of casting technique of bimetallic composite crusher tup |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108160923A (en) * | 2018-01-09 | 2018-06-15 | 徐工集团工程机械有限公司 | A kind of preparation method of particle enhancing iron-based super abrasive bucket tooth |
| CN109207678B (en) * | 2018-09-28 | 2020-09-04 | 上大鑫仑材料科技（广东）有限公司 | Hot forging die heat treatment method and application thereof |
| CN112045166B (en) * | 2020-09-15 | 2022-09-13 | 东阳市科灵装备制造股份有限公司 | Three-metal cold-hot composite high-chromium cast iron composite hammer head and manufacturing process thereof |
| CN112665937A (en) * | 2020-12-30 | 2021-04-16 | 郑州鼎盛高新能源工程技术有限公司 | Novel method for quickly testing mechanical property of large hammer head base body |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4352774A (en) * | 1980-03-13 | 1982-10-05 | The Frog, Switch & Manufacturing Company | Method and arrangement for support of contact elements of hammermills and the like |
| CN2232798Y (en) * | 1995-07-21 | 1996-08-14 | 向龙生 | Double metal wear resistance hammer made of electroslag casting |
| CN101509096B (en) * | 2009-03-19 | 2012-03-14 | 上海泽玛克敏达机械设备有限公司 | Grinder hammerhead and manufacturing method thereof |
| CN201768897U (en) * | 2010-07-01 | 2011-03-23 | 刘昆湘 | Fusion casting impact crusher wear-resistant flat hammer |
| CN202212226U (en) * | 2011-07-27 | 2012-05-09 | 周志峰 | Composite alloy hammer for hammer type crusher |
| CN102872941A (en) * | 2011-11-10 | 2013-01-16 | 佳木斯大学 | Hammer head for two-fluid duplex metal composite hammer crusher and manufacturing method thereof |
| CN103611602B (en) * | 2013-09-23 | 2015-10-21 | 株洲方远航空铸造有限责任公司 | A kind of hammer mill three metal quartering hammers and preparation method thereof |
-
2013
- 2013-12-11 CN CN201310674502.8A patent/CN103611602B/en active Active
- 2013-12-11 CN CN201320816231.0U patent/CN203663914U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611602A (en) * | 2013-09-23 | 2014-03-05 | 株洲方远航空铸造有限责任公司 | Three-metal quartering hammer for hammer crusher and preparation method of three-metal quartering hammer |
| CN103611602B (en) * | 2013-09-23 | 2015-10-21 | 株洲方远航空铸造有限责任公司 | A kind of hammer mill three metal quartering hammers and preparation method thereof |
| CN106825511A (en) * | 2016-12-30 | 2017-06-13 | 常熟市电力耐磨合金铸造有限公司 | A kind of casting technique of bimetallic composite crusher tup |
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| CN103611602A (en) | 2014-03-05 |
| CN103611602B (en) | 2015-10-21 |
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