CN105586522A - Tool machining and manufacturing technology with polycrystalline diamond as material - Google Patents
Tool machining and manufacturing technology with polycrystalline diamond as material Download PDFInfo
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- CN105586522A CN105586522A CN201410573163.9A CN201410573163A CN105586522A CN 105586522 A CN105586522 A CN 105586522A CN 201410573163 A CN201410573163 A CN 201410573163A CN 105586522 A CN105586522 A CN 105586522A
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Abstract
The invention discloses a tool manufacturing technology with polycrystalline diamond as the material and belongs to the technical field of casting machining. The polycrystalline diamond material mainly comprises TiC, Co, Ni and the like. The machining processes of the polycrystalline diamond material include sintering, borax adding, stress relieving, corrosion-resisting treatment, grinding and detecting. The technological processes are easy and convenient to operate and are mainly used for machining cast iron (gray cast iron, high-alloy wear-resistant cast iron and the like) difficult to machine, various high-carbon steel and alloy steel and the like. Due to the fact that a certain amount of TiC is contained in the material, the impact resisting strength of the tool is improved, the tool has the beneficial effects of being high in hardness, high in compressive strength, good in heat conductivity and wear resistance and the like, and the very high machining precision and machining efficiency can be obtained in high-speed cutting. The tool is formed by welding a hard alloy tool handle and a tool bit and is obtained through a hot-pressing molding and sintering method.
Description
Technical field
This invention belongs to casting processing technique field, the present invention relates to polycrystalline diamond and cutter thereof. EspeciallyIt is a kind of tool sharpening manufacturing process that is material with polycrystalline diamond.
Background technology
Traditional cutting tool, mostly high-speed steel, hard alloy steel are material, be mainly used to cutting cast iron,The metal materials such as hardened steel. The hardness of these cutting tools, anti-wear performance, toughness, resistance to elevated temperatures haveCertain limitation, service life is short, and hardness is low, and thermal conductivity factor is little, and heat transmission is slow rapidly, andIts coefficient of friction is large, and cutting force is larger, and thermal coefficient of expansion is large, and therefore its Thermal Distortion of Cutting Tool is large, processing essenceSpend the end and in process smear metal on point of a knife, form built-up edge. Afterwards along with the development of technology is sent outUnderstand new cutter material, pure Si3N4Cutter or pure Al2O3Cutter, but these cutter material impact resistances are poor,Fracture toughness is bad, and a little less than bending resistance, cutting speed is not steady, easily forms mechanical knurl, and work efficiency is low,Not only expend time in, and vibrations are large, easily produce shriek, cause surface to be machined fineness poor, workPart is yielding, and capital causes part to be scrapped, and causes heavy economic losses, and cutting edge roundness broken invalid,Cutter life is not high.
Summary of the invention
For the deficiencies in the prior art, the present invention, in order to address the above problem, has designed a kind of glomerocryst Buddha's warrior attendant of usingStone is the tool sharpening manufacturing process of material.
The present invention has prepared this one tool sharpening and has known technique, the degree of its material therefor composition:TiC1.2％-2.1％，Co0.89％-1.23％，Ni1.25％-1.78％，Nb0.23％-0.56％，SiC7.53%-8.95%, all the other become and are mainly C60With inevitable impurity, preferably TiC1.3%-1.9%,Co0.91%-1.13%, Ni1.52%-1.62%, Nb0.27%-0.41%, SiC7.92%-8.24%, it addsWork technology key technology is as follows: (1) mixes the various materials than the composition of row, puts into preheating in advanceSmelting furnace, the melting mixture of heating obtains liquation, wherein preheat temperature is 800-900 DEG C, smelting temperature controlBuilt in 1400-1600 DEG C, in fusion process, magnetize stirring: apply the magnetic field of rotation in smelting furnace periphery,Make liquation produce inductive loop, carry out afterwards the processing of magnetic feed, that is: utilize feed magnetic field generator to meltLiquid pumps in die casting machine holding furnace, makes it under nitrogen atmosphere, be incubated 20-30min, and controls die casting machineHolding furnace inner melt temperature, at 850-920 DEG C, is finally carried out hot type die casting, that is: alloy molten solution is inputtedCompression mod carries out die casting, and compression mod temperature is 100-200 degree, and retention time 5-10 minute takes out foundry goods cutterTool, (2) carry out destressing processing to cutter, carry out quenching+tempering processing, adopt secondary quenching method, firstWater-cooled, 500-650 DEG C of quick water-cooled, it is cooling that 500 DEG C of cooling velocities with 100 DEG C/h are carried out, then carry outHigh tempering processing, temperature is 550-650 DEG C, (3) carry out tool surface nitriding, are cooled toAfter 550-650 DEG C, send in the constant-temperature oven that is full of nitrogen and hydrogen, furnace temperature is 620-670 DEG C, insulation0.5-1.5h, after the air cooling of coming out of the stove, the cutter after nitriding is carried out blasting treatment scale removal by (4), thenCarry out surface phosphoric acid processing, (5) preservative treatment: by magnesium, portland cement, waterglass, alundum (Al2O3),Water etc. are made into thick mixing material, after stirring, adopt high-pressure process to be sprayed tool surface, thenBe put at 400-580 DEG C and carried out heated baking, make its surface form layer protecting film, reached anticorrosion anti-The object (6) of rust is carried out milled processed to the cutter after preservative treatment, and whether qualified in detection, no person returnsTo (4). (note: in the time of design, cutting-tool angle is anterior angle γ0=-5.7 DEG C-24.1 DEG C, primary clearance α0＝5℃-11 DEG C, tool cutting edge angle KrGet 90 DEG C, 75 DEG C, 60 DEG C, 45 DEG C, 30 DEG C. Tool back angle and tool back clearance are flat at the back of the bodyIn face, measure, auxiliary angle is measured in basal plane, and cutting edge inclination is measured in the back of the body of cutting face).
The invention has the advantages that: in cutter material, added a certain amount of TiC, added metal Ni etc. simultaneouslyThereby improved cutter impact, bending strength, strengthens the combination of each tissue and can suppress the length of tissueGreatly, comprehensive mechanical is good, and cutting speed is stable, and wearability is good, and hardness is high, and heat-resisting quantity is good, thermal conductivityThe characteristic such as good, fragility further reduces, and due in polycrystalline diamond body, four valence electrons of carbon atom are pressedTetrahedral structure Cheng Jian, each carbon atom and four adjacent atoms form covalent bond, and then composition diamond knotStructure, the adhesion of this structure and directionality are very strong, thereby make diamond have extreme hardness, therefore its hardnessCan reach 8000HV, be 80～120 times of carbide alloy, its thermal conductivity factor is 700W/mK, is carbide alloy1.5～9 times, therefore the transmission of polycrystal diamond cutter heat is rapid, and its coefficient of friction is only generally0.1～0.3, can significantly reduce cutting force, thermal coefficient of expansion is only 0.9 × 10-6～1.18×10-6, only phaseWhen in 1/5 of carbide alloy, therefore its Thermal Distortion of Cutting Tool is little, the high and smear metal in process of machining accuracyOn point of a knife, do not form built-up edge.
Detailed description of the invention
Embodiment mono-
A cutter for polycrystalline diamond material, its material therefor composition is: TiC1.2%, Co0.89%,Ni1.25%, Nb0.23%, SiC7.53%, all the other become and are mainly C60With inevitable impurity, itsProcessing technology key technology is as follows: (1) mixes the various materials than the composition of row, puts into pre-in advanceThe smelting furnace of heat, the melting mixture of heating obtains liquation, and wherein preheat temperature is 800 DEG C, smelting temperature controlAt 1400 DEG C, in fusion process, magnetize stirring: apply the magnetic field of rotation in smelting furnace periphery, make liquationProduce inductive loop, carry out afterwards the processing of magnetic feed, that is: utilize feed magnetic field generator that liquation is pumpedIn die casting machine holding furnace, make it under nitrogen atmosphere, be incubated 20min, and control in die casting machine holding furnaceMelt temperature, at 850 DEG C, finally carries out hot type die casting, that is: alloy molten solution is inputted to compression mod and pressCasting, compression mod temperature is 100 degree, 5 minutes retention times, take out foundry goods cutter, carry out cutter (2)Destressing processing, carries out quenching+tempering processing, adopts secondary quenching method, first water-cooled, at 500 DEG C fastWater-cooled, it is cooling that 500 DEG C of cooling velocities with 100 DEG C/h are carried out, then carry out high tempering processing, temperatureBe 550 DEG C, (3) carry out tool surface nitriding, be cooled to after 550 DEG C, send into be full of nitrogen and hydrogen etc.In temperature stove, furnace temperature is 620 DEG C, insulation 0.5h, after the air cooling of coming out of the stove, (4) carry out the cutter after nitridingBlasting treatment scale removal, then carry out surface phosphoric acid processing, (5) preservative treatment: by magnesium, silicate cementMud, waterglass, alundum (Al2O3), water etc. are made into thick mixing material, after stirring, adopt high pressureMethod is sprayed tool surface, is then put at 400 DEG C and carries out heated baking, makes its surface form oneLayer diaphragm, reaches antiseptic and rustproof object (6) cutter after preservative treatment is carried out to milled processed, in inspectionWhether qualified, no person turns back to (4) if surveying. (note: in the time of design, cutting-tool angle is anterior angle γ0＝-5.7℃-24.1 DEG C, primary clearance α0=5 DEG C-11 DEG C, tool cutting edge angle KrGet 90 DEG C, 75 DEG C, 60 DEG C, 45 DEG C, 30 DEG C.Tool back angle and tool back clearance are measured in tool back plane, and auxiliary angle is measured in basal plane, and cutting edge inclination is in the back of the body of cutting faceMeasure).
Embodiment bis-
A cutter for polycrystalline diamond material, its material therefor composition is: TiC2.1%, Co1.23%,Ni1.78%, Nb0.56%, SiC8.95%, all the other become and are mainly C60With inevitable impurity, itsProcessing technology key technology is as follows: (1) mixes the various materials than the composition of row, puts into pre-in advanceThe smelting furnace of heat, the melting mixture of heating obtains liquation, and wherein preheat temperature is 900 DEG C, smelting temperature controlAt 1600 DEG C, in fusion process, magnetize stirring: apply the magnetic field of rotation in smelting furnace periphery, make liquationProduce inductive loop, carry out afterwards the processing of magnetic feed, that is: utilize feed magnetic field generator that liquation is pumpedIn die casting machine holding furnace, make it under nitrogen atmosphere, be incubated 30min, and control in die casting machine holding furnaceMelt temperature, at 920 DEG C, finally carries out hot type die casting, that is: alloy molten solution is inputted to compression mod and pressCasting, compression mod temperature is 200 degree, 10 minutes retention times, take out foundry goods cutter, (2) are entered cutterRow destressing processing, carries out quenching+tempering processing, adopts secondary quenching method, and first water-cooled is fast at 650 DEG CSpeed water-cooled, it is cooling that 500 DEG C of cooling velocities with 100 DEG C/h are carried out, then carry out high tempering processing, tempering temperatureDegree is 650 DEG C, and (3) carry out tool surface nitriding, is cooled to send into after 650 DEG C to be full of nitrogen and hydrogenIn constant-temperature oven, furnace temperature is 670 DEG C, insulation 1.5h, after the air cooling of coming out of the stove, (4) enter the cutter after nitridingRow blasting treatment scale removal, then carry out surface phosphoric acid processing, (5) preservative treatment: by magnesium, silicateCement, waterglass, alundum (Al2O3), water etc. are made into thick mixing material, after stirring, adopt highPlaten press is sprayed tool surface, is then put at 580 DEG C and carries out heated baking, and its surface is formedLayer protecting film, reaches antiseptic and rustproof object (6) cutter after preservative treatment is carried out to milled processed,Whether qualified, no person turns back to (4) if detecting. (note: in the time of design, cutting-tool angle is anterior angle γ0＝-5.7℃-24.1 DEG C, primary clearance α0=5 DEG C-11 DEG C, tool cutting edge angle KrGet 90 DEG C, 75 DEG C, 60 DEG C, 45 DEG C, 30 DEG C.Tool back angle and tool back clearance are measured in tool back plane, and auxiliary angle is measured in basal plane, and cutting edge inclination is in the back of the body of cutting faceMeasure).
Applicant's statement, the present invention illustrates detailed process equipment and process of the present invention by above-described embodimentFlow process, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, does not mean that the present inventionMust rely on above-mentioned detailed process equipment and process flow process could implement. Person of ordinary skill in the field shouldThis understands, any improvement in the present invention, the equivalence replacement to the each raw material of product of the present invention and auxiliary elementThe selections of interpolation, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (1)
1. a tool sharpening manufacturing process that is material with polycrystalline diamond, polycrystalline diamond comprises following weight hundredProportion by subtraction content: TiC1.2%-2.1%, Co0.89%-1.23%, Ni1.25%-1.78%, Nb0.23%-0.56%,SiC7.53%-8.95%, all the other become and are mainly C60 and inevitable impurity, are characterised in that:
(1) the various materials than the composition of row are mixed, put into the smelting furnace of preheating in advance, the melting of heating mixesThing obtains liquation, and wherein preheat temperature is 800-900 DEG C, and smelting temperature is controlled at 1400-1600 DEG C, moltenIn refining process, magnetize stirring: apply the magnetic field of rotation in smelting furnace periphery, make liquation produce inductive loop,Carry out afterwards the processing of magnetic feed, that is: utilize feed magnetic field generator that liquation is pumped to die casting machine holding furnaceIn, make it under nitrogen atmosphere, be incubated 20-30min, and control die casting machine holding furnace inner melt temperature exist850-920 DEG C, finally carries out hot type die casting, that is: alloy molten solution is inputted to compression mod and carried out die casting, pressesMold temperature is 100-200 degree, and retention time 5-10 minute takes out foundry goods cutter,
(2) cutter is carried out to destressing processing, carry out quenching+tempering processing, adopt secondary quenching method, first water-cooled,500-650 DEG C of quick water-cooled, it is cooling that 500 DEG C of cooling velocities with 100 DEG C/h are carried out, then carry out high temperature and returnFire is processed, and temperature is 550-650 DEG C,
(3) carry out tool surface nitriding, be cooled to after 550-650 DEG C and send in the constant-temperature oven that is full of nitrogen and hydrogen,Furnace temperature is 620-670 DEG C, insulation 0.5-1.5h, after the air cooling of coming out of the stove,
(4) cutter after nitriding is carried out to blasting treatment scale removal, then carries out surface phosphoric acid processing,
(5) preservative treatment: by magnesium, portland cement, waterglass, alundum (Al2O3), water etc. are made into thick mixedClose liquid, after stirring, adopt high-pressure process to be sprayed tool surface, be then put in 400-580 DEG CUnder carry out heated baking, make its surface form layer protecting film, reach antiseptic and rustproof object,
(6) cutter after preservative treatment is carried out to milled processed, whether qualified in detection, no person turns back to (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573163.9A CN105586522A (en) | 2014-10-23 | 2014-10-23 | Tool machining and manufacturing technology with polycrystalline diamond as material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573163.9A CN105586522A (en) | 2014-10-23 | 2014-10-23 | Tool machining and manufacturing technology with polycrystalline diamond as material |
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| CN105586522A true CN105586522A (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410573163.9A Pending CN105586522A (en) | 2014-10-23 | 2014-10-23 | Tool machining and manufacturing technology with polycrystalline diamond as material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352073A (en) * | 2017-08-01 | 2017-11-17 | 合肥英源新材料科技有限公司 | Vacuum sealer |
| CN107352074A (en) * | 2017-08-01 | 2017-11-17 | 合肥英源新材料科技有限公司 | A kind of cutting knife of vacuum sealer |
| CN107458675A (en) * | 2017-08-01 | 2017-12-12 | 合肥英源新材料科技有限公司 | A kind of manufacturing process of the cutting knife of vacuum sealer |
-
2014
- 2014-10-23 CN CN201410573163.9A patent/CN105586522A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352073A (en) * | 2017-08-01 | 2017-11-17 | 合肥英源新材料科技有限公司 | Vacuum sealer |
| CN107352074A (en) * | 2017-08-01 | 2017-11-17 | 合肥英源新材料科技有限公司 | A kind of cutting knife of vacuum sealer |
| CN107458675A (en) * | 2017-08-01 | 2017-12-12 | 合肥英源新材料科技有限公司 | A kind of manufacturing process of the cutting knife of vacuum sealer |
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Application publication date: 20160518 |