CN204053826U - A kind of cutter head and making mould thereof - Google Patents
A kind of cutter head and making mould thereof Download PDFInfo
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- CN204053826U CN204053826U CN201420136573.2U CN201420136573U CN204053826U CN 204053826 U CN204053826 U CN 204053826U CN 201420136573 U CN201420136573 U CN 201420136573U CN 204053826 U CN204053826 U CN 204053826U
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- 239000002245 particle Substances 0.000 claims abstract description 87
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 63
- 239000000956 alloy Substances 0.000 claims abstract description 63
- 238000000227 grinding Methods 0.000 claims abstract description 51
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 47
- 239000010432 diamond Substances 0.000 claims abstract description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 239000010439 graphite Substances 0.000 claims description 21
- 229910002804 graphite Inorganic materials 0.000 claims description 21
- 238000004826 seaming Methods 0.000 claims description 19
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 85
- 229910052751 metal Inorganic materials 0.000 abstract description 38
- 239000002184 metal Substances 0.000 abstract description 38
- 239000004568 cement Substances 0.000 abstract description 35
- 229920002457 flexible plastic Polymers 0.000 abstract description 19
- 239000000428 dust Substances 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 15
- 239000004575 stone Substances 0.000 abstract description 13
- 238000002360 preparation method Methods 0.000 abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 19
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical group [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 14
- 238000005245 sintering Methods 0.000 description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 9
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 6
- 229910001573 adamantine Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000007747 plating Methods 0.000 description 6
- 150000003626 triacylglycerols Chemical class 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 3
- ZGDWHDKHJKZZIQ-UHFFFAOYSA-N cobalt nickel Chemical compound [Co].[Ni].[Ni].[Ni] ZGDWHDKHJKZZIQ-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910008947 W—Co Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000009707 resistance sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- HCOLPNRPCMFHOH-UHFFFAOYSA-N Prodigiosin Natural products CCCCCC1C=C(C=C/2N=C(C=C2OC)c3ccc[nH]3)N=C1C HCOLPNRPCMFHOH-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- -1 after plating Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- TWFGRJUTAULJPZ-USZBIXTISA-N prodigiosin Chemical compound N1=C(C)C(CCCCC)=C\C1=C/C1=NC(C=2[N]C=CC=2)=C[C]1OC TWFGRJUTAULJPZ-USZBIXTISA-N 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
- Powder Metallurgy (AREA)
Abstract
The purpose of this utility model proposes a kind of cutter head, and this kind of cutter head is suitable for the grinding object of the cement stone material being cast with flexible plastic cement.Cutter head of the present utility model is provided with grinding part; described grinding part is by bortz powder and the metal sintered blocks of function; described grinding part is fixed with the some hard alloy particle or the polycrystalline diamond particle that protrude from grinding face, and the part of described hard alloy particle or polycrystalline diamond particle is embedded in grinding part.The utility model is by being combined into cutter head by hard alloy particle or polycrystalline diamond particle and bortz powder, function metal dust alloy; effective grinding can be carried out for the grinding object of the cement stone material being cast with flexible plastic cement; its preparation method is simply ingenious; the combination stability of hard alloy particle or polycrystalline diamond particle and bortz powder, function metal dust can be ensured, improve the service life of cutter head.
Description
Technical field
The utility model belongs to equipment for grinding technical field, is related specifically to a kind of cutter head and makes mould.
Background technology
In work progress, often can run into off-gauge grinding object, such as, on rigid cement stone material surface casting certain thickness flexible plastic cement, when needs reparation or when removing flexible plastic cement, if adopt the cutter head of hard alloy grinding block to strike off flexible plastic cement, then cutter head inevitably encounters rigid cement and stone material, and carbide alloy is subject to powerful impact, cause carbide bit very soon cracked, scrap; If adopt the cutter head of diamond grinding block, because diamond exposure low (within 1mm), flexible plastic cement clogging go out the diamond space of sword, adamantine ablation was lost efficacy, and abrading block cannot the plastic cement of normal worn flexibility.Therefore the extraordinary grinding object for the cement stone material being cast with flexible plastic cement is necessary, a kind of suitable cutter head of special design.
Summary of the invention
The purpose of this utility model proposes a kind of cutter head and makes mould, and this kind of cutter head is suitable for the grinding object of the cement stone material being cast with flexible plastic cement.
Cutter head of the present utility model is provided with grinding part, and described grinding part is fixed with the some hard alloy particle or the polycrystalline diamond particle that protrude from grinding face, and the part of described hard alloy particle or polycrystalline diamond particle is embedded in grinding part.
For be cast with flexible plastic cement cement stone material grinding object grinding process in, first be hard alloy particle or the flexible plastic cement of polycrystalline diamond particle contacts of cutter head, and flexible plastic cement is drawn rotten striking off, simultaneously also occasionally there is friction hard alloy particle or polycrystalline diamond particle and cement flooring, hard alloy particle or polycrystalline diamond particle wear and tear gradually in the process striking off flexible plastic cement, polish, then be grinding part contact cement stone material, to the grinding of cement stone material, doing so avoids grinding part and directly contact the flexible plastic cement of grinding and the problem that causes cutter head to lose efficacy, simultaneously in whole process without the need to changing cutter head, improve operating efficiency.Above-mentioned hard alloy particle can adopt W-Co kind carbide alloy, random broken body, and corner angle are sharply sharp, and main component is tungsten carbide (WC) and binding agent cobalt (Co), and its toughness is relatively better.Polycrystalline diamond (PCD) utilizes high-pressure synthesis technology to synthesize, and its structure is very similar to natural diamond, is combined into by unsaturated bond, has good toughness.Polycrystalline diamond particle has that hardness is high, compression strength is high, thermal conductivity and the characteristic such as wearability is good, can obtain very high machining accuracy and working (machining) efficiency in high-speed cutting.
Further, described grinding part is by bortz powder and the metal sintered blocks of function, to improve the grinding capacity of grinding part.
Further, the plated surface of described bortz powder is covered with cobalt nickel powder end coating, and the nickel powder in described nickel cobalt (alloy) powder coating, the weight ratio of cobalt powder are 90:10, and the particle diameter of nickel powder, cobalt powder is 2.5 ~ 3 microns.Cobalt nickel powder is after nickel ingot and cobalt ingot high temperature melting uniform alloy, the alloy powder cool rapidly, be atomized.Diamond coating technology is a kind of prior art of extensive use; namely under vacuum high-temperature state; nickel cobalt (alloy) powder is plated to diamond surface; form micron-sized protective layer; during sintering; this protective layer had both alleviated adamantine fire damage and degree of carbonisation, turn increased the enhanced primary treatment with metal dust, strengthened metal dust alloy carcass to adamantine hold.Specifically, be put into inside resistant to elevated temperatures ceramic boat need the bortz powder of plating, again ceramic boat is put in the furnace chamber of plating machine, shut hatch door, vacuumize, vacuum is 0.0001 ~ 0.01Pa, be warming up to 650 ~ 780 DEG C, the nickel cobalt (alloy) that plating one deck is 10 ~ 30 microns is to bortz powder surface, the bond strength >140MPa of coating and bortz powder, after plating, diamond individual particle compression strength improves 5 ~ 20%, bortz powder can be realized be combined with the brute force of metal powder, not threshing during cutter grinding work, go out sword to increase, life-span and working (machining) efficiency are increased substantially, reduce manufacturing cost.
Specifically, function metal powder has following two kinds:
1, described function metal powder is cobalt powder, nickel powder, chromium powder, tungsten carbide powder, wherein the particle diameter of diamond dust is 600 ~ 710 microns, the particle diameter of cobalt powder and nickel powder is less than 10 microns, and the particle diameter of chromium powder is 30 ~ 50 microns, and the particle diameter of tungsten carbide powder is 80 ~ 100 microns; The part by weight of described various powder in function metal powder is as follows: cobalt powder 80 ~ 90%, nickel powder 2 ~ 8%, tungsten powder 2 ~ 8%, tungsten carbide powder 2 ~ 6%; In described grinding part, the concentration range of bortz powder is 30% ~ 100%.In above-mentioned functions metal powder, cobalt powder is main component, and its sintering strength is high, toughness and wearability good; The effect of nickel powder increases wearability; The effect of chromium powder increases carcass to the hold of bortz powder; Tungsten carbide powder is present in alloy with simple substance, increases hardness and the wearability of carcass.
2, described function metal powder is cobalt powder, nickel powder, chromium powder, tungsten powder, tungsten carbide powder, copper powder, glass putty, signal bronze powder, in described signal bronze powder, the content of copper and tin is than being 90:10, wherein the particle diameter of diamond dust is 600 ~ 710 microns, the particle diameter of cobalt powder and nickel powder is less than 10 microns, the particle diameter of chromium powder, copper powder, glass putty, signal bronze powder is 30 ~ 50 microns, and the particle diameter of tungsten powder, tungsten carbide powder is 80 ~ 100 microns; The part by weight of described various powder in function metal powder is as follows: cobalt powder 70 ~ 80%, nickel powder 2 ~ 6%, chromium powder 1 ~ 3%, tungsten powder 1 ~ 5%, tungsten carbide powder 1 ~ 5%, copper powder 3 ~ 7%, glass putty 3 ~ 7%, signal bronze powder 1 ~ 5%; In described grinding part, the concentration range of bortz powder is 30% ~ 100%.In the function metal powder newly increased, tungsten powder increases hardness and the wearability of carcass, has certain alloying action with cobalt powder and nickel powder; The effect of copper powder is the toughness and the ductility that increase carcass; Produce liquid phase when the effect of glass putty is sintering, softening carcass, reduces the sintering temperature of carcass; The effect of signal bronze powder is softening carcass, improves the sintering character of carcass, improves the density of carcass.
Metal dust alloy carcass after sintering and hard alloy particle or polycrystalline diamond particle form the metallurgical binding of chemical bond, shape all-in-one-piece alloy, enhance the hold of metal dust alloy carcass to hard alloy particle or polycrystalline diamond particle; In addition, the nickel cobalt (alloy) powder coating of the metal dust alloy carcass after sintering and bortz powder coating surface forms the metallurgical binding of chemical bond, and makes its coefficient of expansion slightly larger than diamond, enhances metal dust alloy carcass to adamantine hold.
Further, the granularity of described hard alloy particle or polycrystalline diamond particle is 5.5 ~ 6.5 millimeters.
Further, install cutter head for convenience, described cutter head also comprises the metallic matrix welded with grinding part.
The making of above-mentioned cutter head adopts graphite jig, and described graphite jig comprises seaming chuck and graphite cuvette, and the bottom surface of described seaming chuck is provided with several pits, and the degree of depth of described pit is less than the height of hard alloy particle or polycrystalline diamond particle.The preparation method of cutter head specifically comprises the steps:
A: by bortz powder plating last layer nickel cobalt (alloy) powder coating;
B: coat releasing agent in the bottom surface of seaming chuck and the inner surface of graphite cuvette, then utilizes glue to be bonded in the pit of seaming chuck bottom surface hard alloy particle or polycrystalline diamond particle, makes the part of hard alloy particle or polycrystalline diamond particle be exposed to pit;
C: to pour into after being mixed with function metal powder by bortz powder in graphite cuvette and floating, then cover seaming chuck, makes in the powder being partially embedded in graphite of the hard alloy particle in seaming chuck or polycrystalline diamond particle;
D: according to the process curve of the intensification pressurization of setting, pressurize in high temperature environments to seaming chuck and push-down head, make the material hot pressing in mould to predetermined tyre body alloy density, finally release and cooling again, takes off seaming chuck, obtain cutter head simultaneously.
Specifically, in described step C, first bortz powder and function metal powder are mixed when drying and obtain siccative; Then get fraction siccative to mix in pottery pot with atoleine or triglycerides and obtain wet feed, then wet feed is mixed with remaining siccative; The part by weight of the mixed powder of described bortz powder and function metal powder and atoleine or triglycerides is 1000:20 ~ 1000:80.The benefit soaking siccative with atoleine or triglycerides is as follows: 1, avoid bortz powder, various metal powder cause because of the difference of proportion mixing uneven; 2, the powder after wetting at subsequent charge in the process in graphite jig, can not airborne dust, avoid injury workman and contaminated environment; 3, be easily shaped during hot pressing, adopt dry powder hot pressing, dry powder is easily emerged from the gap of mould; 4, the modest viscosity of atoleine and triglycerides, and can scaling loss volatilize between 500 ~ 600 degree, can not tyre body alloy be polluted.
In described D step, utilize automatic vacuum electrical resistance sintering stove, in vacuum atmosphere, carry out resistance-type heating and the pressure sintering of proportional valve hydraulic control system; Initial pressure is 0.393MPa, within 5 minutes, makes the temperature in mould rise to 700 DEG C; Again pressure is increased to 0.786MPa, within 2 minutes, the temperature in mould is risen to 950 DEG C from 700 DEG C; Again pressure is increased to 1.376MPa, and keeps 3 minutes at the temperature of 950 DEG C, sinter complete; And then shed pressure and lower the temperature, come out of the stove when being cooled to 200 DEG C, then naturally cool to room temperature, take out cutter head.Segmentation pressurization and heating up gradually, mainly set according to the sintering character of metal powder, softening temperature, densification degree, to guarantee that alloying level, density and the intensity obtained meets the demands, and diamond damages less.In the present case, initial pressure is as far as possible little, but enough pressure again, and allow the red copper electrode of push-down head on press be energized with graphite jig close contact, generation current, heats; Interstage pressure is moderate, and between 700 degree ~ 950 degree, be the process that powder softens, pressure damages graphite jig by pressure too greatly, and pressure is too little, and cutter head density is inadequate, and space is too much; Final pressure will be tried one's best greatly, but will in the pressure that graphite mo(u)ld prodigiosin bears.Above-mentioned release should complete in moment (one second or several seconds in), because cooling rate is very fast, uncontrollable, if temperature is very low, pressure still very greatly, can press quick-fried graphite jig.
Specifically, the releasing agent in described step B is nanometer boron nitride micro powder or graphite microparticles or ceramic, and the particle size range of described nanometer boron nitride micro powder or graphite microparticles or ceramic is 10 ~ 50 nanometers.
The utility model is by being combined into cutter head by hard alloy particle or polycrystalline diamond particle and bortz powder, function metal dust alloy; effective grinding can be carried out for the grinding object of the cement stone material being cast with flexible plastic cement; its preparation method is simply ingenious; the combination stability of hard alloy particle or polycrystalline diamond particle and bortz powder, function metal dust can be ensured, improve the service life of cutter head.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of cutter head of the present utility model.
Fig. 2 is the sectional structure schematic diagram of mould of the present utility model.
Temperature when Fig. 3 is cutter head of the present utility model sintering and pressure curve.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of detailed description of the invention of the present utility model as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
As shown in Figure 1, the cutter head of the present embodiment is provided with grinding part 1, described grinding part 1 is by bortz powder and the metal sintered blocks of function, described grinding part 1 is fixed with some hard alloy particles 2 protruding from grinding face 11, hard alloy particle 2 can adopt W-Co kind carbide alloy, uniform in all around misplacing; The granularity of hard alloy particle 2 is 5.5 ~ 6.5 millimeters, and the part of hard alloy particle 2 is embedded in grinding part 1.
Specifically, function metal powder is cobalt powder, nickel powder, chromium powder, tungsten carbide powder, and wherein the particle diameter of diamond dust is 600 ~ 710 microns, and the particle diameter of cobalt powder and nickel powder is less than 10 microns, the particle diameter of chromium powder is 30 ~ 50 microns, and the particle diameter of tungsten carbide powder is 80 ~ 100 microns; The part by weight of described various powder in function metal powder is as follows: cobalt powder 85%, nickel powder 6%, tungsten powder 5%, tungsten carbide powder 4%; The plated surface of described above-mentioned bortz powder is covered with cobalt nickel powder end coating, and the nickel powder in described nickel cobalt (alloy) powder coating, the weight ratio of cobalt powder are 90:10, and the particle diameter of nickel powder, cobalt powder is 2.5 microns.
Adamantine concentration generally represents with content adamantine in the unit volume of cutter head instrument, and its unit is carat/cubic centimetre, (1 carat=0.2 gram).Concentration system in concrete production mainly adopts " the international concentration standard of diamond composition ", containing 4.4 carats, diamond during namely the concentration of 100% represents every cubic centimetre.75% concentration should be 3.3 carats/cubic centimetre about mutually, and the rest may be inferred.Diamond concentration should increase and decrease to some extent according to the abrasiveness power of crept into rock stratum.Generally hard in hard low-abrasive rock stratum, concentration about 30% ~ 50%; Hard is 75% to hard medium abrasive rock stratum; During strong abrasiveness rock stratum, diamond concentration increases to 100%.In the present embodiment, in grinding part, the concentration of bortz powder is 30%.
For be cast with flexible plastic cement cement stone material grinding object grinding process in, first be hard alloy particle or the flexible plastic cement of polycrystalline diamond particle contacts of cutter head, and flexible plastic cement is drawn rotten striking off, simultaneously also occasionally there is friction hard alloy particle or polycrystalline diamond particle and cement flooring, hard alloy particle or polycrystalline diamond particle wear and tear gradually in the process striking off flexible plastic cement, polish, then be grinding part contact cement stone material, to the grinding of cement stone material, doing so avoids grinding part and directly contact the flexible plastic cement of grinding and the problem that causes cutter head to lose efficacy, simultaneously in whole process without the need to changing cutter head, improve operating efficiency.
The making of above-mentioned cutter head adopts graphite jig, as shown in Figure 2, described graphite jig comprises seaming chuck 3 and graphite cuvette 4, the bottom surface of described seaming chuck 3 is provided with several pits 31 misplacing uniform all around, the degree of depth of described pit 31 is less than the height of hard alloy particle, its shape is roughly the same with the top of hard alloy particle, and instrument can be utilized to form at the bottom surface of seaming chuck 3 engraving; The preparation method of cutter head specifically comprises the steps:
A: by bortz powder plating last layer nickel cobalt (alloy) powder coating;
B: coat releasing agent in the bottom surface of seaming chuck and the inner surface of graphite cuvette, particle size range is adopted to be that the nanometer boron nitride micro powder of 10 ~ 50 nanometers is as releasing agent, then utilize 502 glue to be bonded in the pit of seaming chuck bottom surface hard alloy particle or polycrystalline diamond particle, make the part of hard alloy particle or polycrystalline diamond particle be exposed to pit;
C: to pour into after being mixed with function metal powder by bortz powder in graphite cuvette and floating, then cover seaming chuck, makes in the powder being partially embedded in graphite jig of the hard alloy particle in seaming chuck; According to density and the respective adding proportion of various metal dust, the solid density of mixed metal powder can be calculated, and rule of thumb, the density of sintering tyre body alloy is generally adjusted with 90% ~ 95% of mixed metal powder solid density.According to the volume of predetermined cutter head and the density of sintering tyre body alloy, instead can extrapolate the weight of required various metal dusts, repeat no more herein;
D: according to the process curve of the intensification pressurization of setting, pressurize in high temperature environments to seaming chuck and push-down head, make the material hot pressing in mould to predetermined tyre body alloy density, finally release and cooling again, takes off seaming chuck, obtain cutter head simultaneously.
Specifically, in described step C, first bortz powder and function metal powder are mixed when drying and obtain siccative; Then get fraction siccative to mix in pottery pot with atoleine and obtain wet feed, then wet feed is mixed with remaining siccative; The mixed powder of described bortz powder and function metal powder and the part by weight of atoleine are 1000:60.
In described D step, utilize automatic vacuum electrical resistance sintering stove, in vacuum atmosphere, carry out resistance-type heating and the pressure sintering of proportional valve hydraulic control system; As shown in Figure 3, Lt is temperature curve, and Lp is pressure curve; Initial pressure is 0.393MPa, within 5 minutes, makes the temperature in mould rise to 700 DEG C; Again pressure is increased to 0.786MPa, within 2 minutes, the temperature in mould is risen to 950 DEG C from 700 DEG C; Again pressure is increased to 1.376MPa, and keeps 3 minutes at the temperature of 950 DEG C, sinter complete; And then shed pressure and lower the temperature, come out of the stove when being cooled to 200 DEG C, then naturally cool to room temperature, take out cutter head.
Embodiment 2:
As different from Example 1, in the present embodiment, polycrystalline diamond particle is utilized to replace hard alloy particle; Described function metal powder is cobalt powder, nickel powder, chromium powder, tungsten powder, tungsten carbide powder, copper powder, glass putty, signal bronze powder, in described signal bronze powder, the content of copper and tin is than being 90:10, wherein the particle diameter of diamond dust is 600 ~ 710 microns, the particle diameter of cobalt powder and nickel powder is less than 10 microns, the particle diameter of chromium powder, copper powder, glass putty, signal bronze powder is 30 ~ 50 microns, and the particle diameter of tungsten powder, tungsten carbide powder is 80 ~ 100 microns; The part by weight of described various powder in function metal powder is as follows: cobalt powder 80%, nickel powder 2%, chromium powder 1%, tungsten powder 3%, tungsten carbide powder 4%, copper powder 4%, glass putty 4%, signal bronze powder 2%; In described grinding part, the concentration of bortz powder is 70%.
Releasing agent employing particle size range in preparation method in step B is the graphite microparticles of 10 ~ 50 nanometers, in step C, siccative and triglycerides mix and obtain wet feed in pottery pot, and the mixed powder of bortz powder and function metal powder and the part by weight of triglycerides are 1000:80.
Claims (4)
1. a cutter head, is characterized in that this cutter head is provided with grinding part, and described grinding part is fixed with the some hard alloy particle or the polycrystalline diamond particle that protrude from grinding face, and the part of described hard alloy particle or polycrystalline diamond particle is embedded in grinding part.
2. cutter head according to claim 1, is characterized in that the granularity of described hard alloy particle or polycrystalline diamond particle is 5.5 ~ 6.5 millimeters.
3. cutter head according to claim 1 and 2, is characterized in that described cutter head also comprises the metallic matrix welded with grinding part.
4. one kind is exclusively used in the mould making cutter head according to claim 1; it is characterized in that this mould comprises seaming chuck and graphite cuvette; the bottom surface of described seaming chuck is provided with several pits, and the degree of depth of described pit is less than the height of hard alloy particle or polycrystalline diamond particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136573.2U CN204053826U (en) | 2014-03-25 | 2014-03-25 | A kind of cutter head and making mould thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136573.2U CN204053826U (en) | 2014-03-25 | 2014-03-25 | A kind of cutter head and making mould thereof |
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| CN204053826U true CN204053826U (en) | 2014-12-31 |
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| CN201420136573.2U Expired - Lifetime CN204053826U (en) | 2014-03-25 | 2014-03-25 | A kind of cutter head and making mould thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160867A (en) * | 2018-03-20 | 2019-08-23 | 龙游县万基建设工程检测有限公司 | A kind of liquid crystal display universal testing machine of high-speeding operation and safety precise |
| CN113580275A (en) * | 2021-06-27 | 2021-11-02 | 江苏华昌工具制造有限公司 | High-strength alloy particle saw blade |
-
2014
- 2014-03-25 CN CN201420136573.2U patent/CN204053826U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160867A (en) * | 2018-03-20 | 2019-08-23 | 龙游县万基建设工程检测有限公司 | A kind of liquid crystal display universal testing machine of high-speeding operation and safety precise |
| CN113580275A (en) * | 2021-06-27 | 2021-11-02 | 江苏华昌工具制造有限公司 | High-strength alloy particle saw blade |
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