CN110202156A - A kind of preparation method of nonmetallic processing hard alloy cutter basis material - Google Patents
A kind of preparation method of nonmetallic processing hard alloy cutter basis material Download PDFInfo
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- CN110202156A CN110202156A CN201910539413.XA CN201910539413A CN110202156A CN 110202156 A CN110202156 A CN 110202156A CN 201910539413 A CN201910539413 A CN 201910539413A CN 110202156 A CN110202156 A CN 110202156A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
The invention discloses a kind of preparation methods of nonmetallic processing hard alloy cutter basis material, comprising the following steps: mixture is prepared, by Co, Cr3C2, Nb, TiC, Mo, Mn, Al, surplus is WC mixing；Above-mentioned mixture is fitted into ball mill by wet-milling mixture, dry using spray drying tower after ball milling stick wet-milling；Mixture is packed into press mold frame and is placed on press by compression moulding, makes powder compression into required shape and size；Sintering, using hydrogen as carrier, removes the forming agent PEG in green compact in vacuum sintering furnace, hydrogen and PEG steam are combusted as vapor and CO2, high temperature sintering is carried out in sintering furnace by Ar air pressure base, by the control of adjustment and air-flow to temperature, obtains the finished product of different performance.The present invention is according to by nonmetallic materials characteristic and features, the accurate physical characteristic and style characteristic for matching sintered carbide tool material, to guarantee the basic mechanical performance and stability of cutter body.
Description
Technical field
The invention belongs to cemented carbide material technical fields, are directed to carbon fibre composite, graphite more particularly, to one kind
The preparation method of class nonmetallic processing hard alloy cutter basis material.
Background technique
Carbon fibre composite is to be transformed by organic fiber by a series of heat treatments, and phosphorus content is higher than 90% nothing
Machine high-performance fiber is a kind of new material of excellent in mechanical performance, the intrinsic person's character feature with carbon material, and it is fine to have both weaving
The soft machinability of dimension is reinforcing fiber of new generation, and mechanical strength and stability will be far superior to common structural steel,
So that aerospace field, automobile manufacturing field and other there is the occasion of demand all to obtain to " light, high-intensitive "
It is widely applied.
But it is just being an advantage over the above-mentioned advantage of carbon fibre composite, such material is not easy to process, carbon fiber composite
The brittleness of material is big, hardness is high and the problems such as being easy to appear layering, tearing and burr when processing, and machine-sensible conditions compare evil
Bad, therefore, this also proposed latent demand to the cutter for cutting processing carbon fibre composite.
When cutter is when cutting carbon fibre composite, in the presence of frictional force on cutting face, produced between material and cutter
A large amount of heat has been given birth to, and the thermal conductivity of carbon fibre composite is small, the radiating condition resulted in process is poor, cutting region
The heat aggregation in domain increases temperature rapidly, not only due to coefficient of thermal expansion has an impact to processing effect, excessively high temperature can also make
Thermal response occurs for cutter, aggravates its abrasion；
Meanwhile the chip of such material powder shape is equivalent to abrasive grain in cutting zone, feeds and cuts between cutter and workpiece
Also it can accelerate the abrasion of cutter when cutting.Therefore, the cutter one for meeting carbon fibre composite cutting processing demand how is produced
It is directly a difficult point.
In addition, especially finishing for machining graphite, same is always the hang-up in industry, the thermally conductive system of graphite
Number is increased with temperature and is reduced, or even at very high temperatures, graphite influences to process at heat guard, unstable wear, if used
PCD cutter, the product surface roughness after processing can also not reach requirement.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of according to by nonmetallic materials characteristic and features, and accurate matching is hard
The physical characteristic and style characteristic of matter alloy cutter material make it to guarantee the basic mechanical performance and stability of cutter body
Meet the preparation method of the nonmetallic processing hard alloy cutter basis material of its process requirements.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of nonmetallic processing carbide cutter tool
Have the preparation method of basis material, comprising the following steps:
Step 1: mixture is prepared, by 8~30%Co, 10~20%Cr3C2, 0.3%~0.4%Nb, 10~15%TiC,
0.3%~0.4%Mo, 0.5%~1.6%Mn, 0.6%~1.2%Al, surplus WC, mixing；
Step 2: above-mentioned mixture is fitted into ball mill by wet-milling mixture, dosage 300-350kg, is molding with PEG
Agent, it is dry using spray drying tower after ball milling stick wet-milling 20-24h using wet-milling alcohol as medium；
Step 3: the drying of wet-milling material makes mixture have good mobility and uniform particle point by spray drying
Cloth, wet grinding media ethyl alcohol are all recycled by volatilization, condensation, are spray-dried using nitrogen as protective gas, whole process
It is carried out in closed environment, to guarantee that mixture is not contaminated；
Step 4: mixture is packed into press mold frame and is placed on press by compression moulding, makes powder compression into required shape
Shape and size, and blank needed for obtaining finished product by semi-finished product grinding ensure that mixture to guarantee the size of finished product
Make full use of；
Step 5: sintering using hydrogen as carrier, removes the forming agent PEG in green compact in vacuum sintering furnace, hydrogen
Gas and PEG steam are combusted as vapor and CO2, high temperature sintering is carried out in sintering furnace by Ar air pressure base, by temperature
Adjustment and air-flow control, obtain the finished product of different performance.
In step 4, the press is from press or hydraulic press.
In steps of 5, vacuum degree 10-30pa is set, temperature is risen to 1200 DEG C from room temperature in 180min, in 1100-
45min is kept the temperature between 1150 DEG C, resetting vacuum degree is 6.66-13.33pa, and temperature is risen to 1400 from 1150 in 120min
DEG C, 30min is kept the temperature between 1400-1420 DEG C.
Due to the adoption of the above technical scheme, the present invention adds the Co, Cr of mass ratio3C2, Nb, TiC, Mo, Mn, Al and WC,
The crystal phase composition for optimizing hard alloy substrate, forms by adjusting the element of alloy substrate, is sintering cemented carbide body into
Intensity, hardness and thermal stability after type have the raising of different amplitudes, are applicable to carbon fibre composite and graphite
Machining reduces the rate of wear of cutter in process, improves cutting-tool's used life.
Compared to using tungsten carbide as the hard alloy of matrix, each phase crystal grain ratio of alloy substrate is more uniform in the present invention,
Hardness and wearability are compared to be significantly improved by the hard alloy of major matrix material (quality accounting is greater than 85%) of tungsten carbide,
It is used for that the cutter of cutting carbon fibre composite is made, the intensity of cutter is high, wearability is good, and the steady point property of processing is high, to carbon
The cutting effect and processing efficiency of fibrous composite and graphite are obviously improved.
Specific embodiment
The present invention is further discussed below below with reference to embodiment:
A kind of embodiment 1: preparation method of nonmetallic processing hard alloy cutter basis material, comprising the following steps:
Step 1: mixture is prepared, by 8%Co, 15%Cr3C2, 0.3%Nb, 12%TiC, 0.3%Mo, 0.8%Mn, 1%
Al, surplus WC, mixing；
Step 2: above-mentioned mixture is fitted into ball mill by wet-milling mixture, dosage 300kg, using 12LPEG as forming agent,
It is dry using spray drying tower after ball milling stick wet-milling 22h using 90L wet-milling alcohol as medium；
Step 3: the drying of wet-milling material makes mixture have good mobility and uniform particle point by spray drying
Cloth, wet grinding media ethyl alcohol are all recycled by volatilization, condensation, are spray-dried using nitrogen as protective gas, whole process
It is carried out in closed environment, to guarantee that mixture is not contaminated；
Step 4: mixture is packed into press mold frame and is placed on hydraulic press by compression moulding, makes powder compression needed for
Shape and size, and blank needed for obtaining finished product by semi-finished product grinding ensure that mixing to guarantee the size of finished product
Material makes full use of；
Step 5: sintering using hydrogen as carrier, removes the forming agent PEG in green compact in vacuum sintering furnace, hydrogen
Gas and PEG steam are combusted as vapor and CO2, high temperature sintering is carried out in sintering furnace by Ar air pressure base, by temperature
Adjustment and air-flow control, obtain finished product one, set vacuum degree 20pa, temperature is risen to 1200 from room temperature in 180min
DEG C, 45min is kept the temperature between 1100 DEG C, resetting vacuum degree is 10pa, temperature is risen to 1400 DEG C from 1150 in 120min,
30min is kept the temperature between 1400 DEG C.
Cutter made from finished product one, density 14.55g/m3, hardness 2000Hv30, wearability 60mm3Abrasion damage
It loses, corrosion resistance 9.
A kind of embodiment 2: preparation method of nonmetallic processing hard alloy cutter basis material, it is characterised in that: packet
Include following steps:
Step 1: mixture is prepared, by 20%Co, 10%Cr3C2, 0.4%Nb, 10%TiC, 0.3%Mo, 0.8%Mn,
0.6%Al, surplus WC, mixing；
Step 2: above-mentioned mixture is fitted into ball mill, 300kg by wet-milling mixture, using 15LPEG as forming agent, with
100L wet-milling alcohol is medium, dry using spray drying tower after ball milling stick wet-milling for 24 hours；
Step 3: the drying of wet-milling material makes mixture have good mobility and uniform particle point by spray drying
Cloth, wet grinding media ethyl alcohol are all recycled by volatilization, condensation, are spray-dried using nitrogen as protective gas, whole process
It is carried out in closed environment, to guarantee that mixture is not contaminated；
Step 4: mixture is packed into press mold frame and is placed on hydraulic press by compression moulding, makes powder compression needed for
Shape and size, and blank needed for obtaining finished product by semi-finished product grinding ensure that mixing to guarantee the size of finished product
Material makes full use of；
Step 5: sintering using hydrogen as carrier, removes the forming agent PEG in green compact in vacuum sintering furnace, hydrogen
Gas and PEG steam are combusted as vapor and CO2, high temperature sintering is carried out in sintering furnace by Ar air pressure base, by temperature
Adjustment and air-flow control, obtain finished product two, wherein vacuum degree 20pa, temperature risen to 1200 from room temperature in 180min
DEG C, 45min is kept the temperature between 1150 DEG C, resetting vacuum degree is 13.33pa, and temperature is risen to 1400 from 1150 in 120min
DEG C, 30min is kept the temperature between 1400 DEG C.
Cutter made from finished product two, density 14.61g/m3, hardness 2100Hv30, wearability 63mm3Abrasion damage
It loses, corrosion resistance 10.
A kind of embodiment 3: preparation method of nonmetallic processing hard alloy cutter basis material, comprising the following steps:
Step 1: mixture is prepared, by 30%Co, 10%Cr3C2, 0.4%Nb, 15%TiC, 0.4%Mo, 1.6%Mn,
1.2%Al, surplus WC, mixing；
Step 2: above-mentioned mixture is fitted into ball mill by wet-milling mixture, dosage 350kg, using 21LPEG as forming agent,
It is dry using spray drying tower after ball milling stick wet-milling for 24 hours using 110L wet-milling alcohol as medium；
Step 3: the drying of wet-milling material makes mixture have good mobility and uniform particle point by spray drying
Cloth, wet grinding media ethyl alcohol are all recycled by volatilization, condensation, are spray-dried using nitrogen as protective gas, whole process
It is carried out in closed environment, to guarantee that mixture is not contaminated；
Step 4: mixture is packed into press mold frame and is placed on hydraulic press by compression moulding, makes powder compression needed for
Shape and size, and blank needed for obtaining finished product by semi-finished product grinding ensure that mixing to guarantee the size of finished product
Material makes full use of；
Step 5: sintering using hydrogen as carrier, removes the forming agent PEG in green compact in vacuum sintering furnace, hydrogen
Gas and PEG steam are combusted as vapor and CO2, high temperature sintering is carried out in sintering furnace by Ar air pressure base, by temperature
Adjustment and air-flow control, obtain finished product three, temperature is risen to 1200 DEG C from room temperature in 180min by vacuum degree 25pa,
45min is kept the temperature between 1150 DEG C, resetting vacuum degree is 13.33pa, temperature is risen to 1400 DEG C from 1150 in 120min,
30min is kept the temperature between 1420 DEG C.
Cutter made from finished product three, density 14.88g/m3, hardness 2300Hv30, wearability 65mm3Abrasion damage
It loses, corrosion resistance 10.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be considered as limiting the scope of the invention.All changes and improvements made in accordance with the scope of the present invention, should all
It still belongs within this patent covering scope.
Claims (3)
1. a kind of preparation method of nonmetallic processing hard alloy cutter basis material, it is characterised in that: the following steps are included:
Step 1: mixture is prepared, by 8~30%Co, 10~20%Cr3C2, 0.3%~0.4%Nb, 10~15%TiC,
0.3%~0.4%Mo, 0.5%~1.6%Mn, 0.6%~1.2%Al, surplus WC, mixing；
Step 2: above-mentioned mixture is fitted into ball mill by wet-milling mixture, dosage 300-350kg, using PEG as forming agent, with
Wet-milling alcohol is medium, dry using spray drying tower after ball milling stick wet-milling 20-24h；
Step 3: the drying of wet-milling material makes mixture have good mobility and uniform distribution of particles by spray drying,
Wet grinding media ethyl alcohol is all recycled by volatilization, condensation, is spray-dried using nitrogen as protective gas, whole process is close
It is carried out in closed loop border, to guarantee that mixture is not contaminated；
Step 4: mixture is packed into press mold frame and be placed on press by compression moulding, make powder compression into required shape and
Size, and blank needed for obtaining finished product by semi-finished product grinding ensure that filling for mixture to guarantee the size of finished product
Divide and utilizes；
Step 5: sintering, using hydrogen as carrier, the forming agent PEG in green compact is removed in vacuum sintering furnace, hydrogen and
PEG steam is combusted as vapor and CO2, high temperature sintering is carried out in sintering furnace by Ar air pressure base, passes through the tune to temperature
Whole and air-flow control, obtains the finished product of different performance.
2. the preparation method of nonmetallic processing hard alloy cutter basis material according to claim 1, feature exist
In: in step 4, the press is from press or hydraulic press.
3. the preparation method of nonmetallic processing hard alloy cutter basis material according to claim 1, feature exist
In: in steps of 5, vacuum degree 10-30pa is set, temperature is risen to 1200 DEG C from room temperature in 180min, at 1100-1150 DEG C
Between keep the temperature 45min, reset vacuum degree be 6.66-13.33pa, temperature is risen to 1400 DEG C from 1150 in 120min,
30min is kept the temperature between 1400-1420 DEG C.
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| CN201910539413.XA CN110202156A (en) | 2019-06-20 | 2019-06-20 | A kind of preparation method of nonmetallic processing hard alloy cutter basis material |
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| CN201910539413.XA CN110202156A (en) | 2019-06-20 | 2019-06-20 | A kind of preparation method of nonmetallic processing hard alloy cutter basis material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534735A (en) * | 2020-05-20 | 2020-08-14 | 中国科学院长春应用化学研究所 | Tungsten carbide aluminum hard alloy without binding phase and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6184355A (en) * | 1984-10-01 | 1986-04-28 | Toyota Motor Corp | Sliding member for valve mechanism and its production |
| CN1532304A (en) * | 2003-03-18 | 2004-09-29 | 浙江工业大学 | Cutter and its processing method |
| CN104625078A (en) * | 2015-02-14 | 2015-05-20 | 江苏和鹰机电科技有限公司 | Hard alloy tool for cutting carbon fiber or glass fiber and production method thereof |
| CN109321804A (en) * | 2018-10-17 | 2019-02-12 | 四川铭泰顺硬质合金有限公司 | It is a kind of for cutting the hard alloy cutter subject preparation method of carbon fibre composite |
-
2019
- 2019-06-20 CN CN201910539413.XA patent/CN110202156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6184355A (en) * | 1984-10-01 | 1986-04-28 | Toyota Motor Corp | Sliding member for valve mechanism and its production |
| CN1532304A (en) * | 2003-03-18 | 2004-09-29 | 浙江工业大学 | Cutter and its processing method |
| CN104625078A (en) * | 2015-02-14 | 2015-05-20 | 江苏和鹰机电科技有限公司 | Hard alloy tool for cutting carbon fiber or glass fiber and production method thereof |
| CN109321804A (en) * | 2018-10-17 | 2019-02-12 | 四川铭泰顺硬质合金有限公司 | It is a kind of for cutting the hard alloy cutter subject preparation method of carbon fibre composite |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534735A (en) * | 2020-05-20 | 2020-08-14 | 中国科学院长春应用化学研究所 | Tungsten carbide aluminum hard alloy without binding phase and preparation method thereof |
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