CN105904598B - The two-sided dry chip that concaves of hot pressing - Google Patents
The two-sided dry chip that concaves of hot pressing Download PDFInfo
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- CN105904598B CN105904598B CN201610343861.9A CN201610343861A CN105904598B CN 105904598 B CN105904598 B CN 105904598B CN 201610343861 A CN201610343861 A CN 201610343861A CN 105904598 B CN105904598 B CN 105904598B
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- Prior art keywords
- concaves
- dry chip
- diamond
- hot pressing
- powder
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- 238000007731 hot pressing Methods 0.000 title claims abstract description 36
- 239000010432 diamond Substances 0.000 claims abstract description 61
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 61
- 239000011159 matrix material Substances 0.000 claims abstract description 45
- 238000005245 sintering Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 38
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 7
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 30
- 239000010439 graphite Substances 0.000 description 13
- 229910002804 graphite Inorganic materials 0.000 description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- 238000004080 punching Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 239000003979 granulating agent Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 6
- 230000003179 granulation Effects 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000009692 water atomization Methods 0.000 description 6
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 238000007550 Rockwell hardness test Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000012387 aerosolization Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011049 pearl Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
- B28D1/24—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising with cutting discs
-
- B22F1/0003—
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a kind of two-sided dry chip that concaves of hot pressing, the technical field of superhard cut product.The two-sided dry chip that concaves of hot pressing of the present invention, including section matrix and diamond segment, the section matrix includes circular body and the annular installation end to be formed that stretches out from the outward flange of the circular body, upper and lower surface by cold-press process in the annular installation end is respectively formed on diamond segment base substrate, and the diamond segment is formed by hot-pressing sintering technique, the hot-pressing sintering technique is that 100~150MPa, temperature are progress under conditions of 830~880 DEG C in pressure.The dry chip of the present invention not only significantly improves the hold of diamond particles, and its anti-wear performance is good, and service life is high；And not only reduce energy consumption in processing and be processed the loss of material, so as to also improve cut quality.
Description
Technical field
The present invention relates to the technical field of superhard cut product, it is more particularly related to it is a kind of be used for marble,
The two-sided dry chip that concaves of hot pressing of the nonmetallic crisp and hard material processing such as granite, the cutting of cement concrete and deburring.
Background technology
Current market, diamond tool is widely used to marble, granite, concrete, pitch, ceramics, glass, pearl
The cutting and repairing processing of the hard materials such as gem and jade；Cutting efficiency is improved constantly, spillage of material is reduced, diamond tool is improved
Service life be direction that market is pursued jointly.Diamond tool generally includes diamond segment and matrix, and matrix thickness is determined
Deposit diamond tool bit thickness, matrix thickness is thicker, and joint-cutting is wider during cutting, and cutting efficiency is lower, and spillage of material is bigger, economy effect
Benefit is poorer, and matrix thickness is thinning, and cutter head is thinning, and cutting efficiency lifting, spillage of material declines；But matrix it is thinning after will cause base
Body rigidly declines in itself, bears load-carrying ability reduction, beat is produced during cutting, and then lose cutting power.Therefore how to solve
Contradiction between matrix thickness and rigidity, in the case of matrix rigid is ensured, producing thinner dry diamond section is always
Perplex the problem of people.
The content of the invention
In order to solve above-mentioned technical problem of the prior art, concave it is an object of the invention to provide a kind of hot pressing is two-sided
Dry chip.
In order to solve the technical problem described in invention and realize goal of the invention, present invention employs following technical scheme：
A kind of two-sided dry chip that concaves of hot pressing, including section matrix and diamond segment, the section matrix include circle
Main body and the annular installation end to be formed that stretches out from the outward flange of the circular body, are pacified by cold-press process in the annular
The upper and lower surface at dress end is respectively formed on diamond segment base substrate, and forms the diamond tool by hot-pressing sintering technique
Head, the hot-pressing sintering technique is that 100~150MPa, temperature are progress under conditions of 830~880 DEG C in pressure.
Wherein, the U-shaped tooth that concaves, adjacent diamond tool are provided with the upper and lower surface of the diamond segment
The chip area for extending to the circular body is provided between head.
Wherein, the section matrix is provided centrally with mounting hole, and the mounting hole over-assemble has metal flange.
Wherein, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the concentration of the diamond
For 0.50~0.80ct/cm3；The carcass powder by weight percentage, by 14~16wt% prealloy powder, 35~
The metallic bond composition of 40wt% copper powder, 6~8wt% glass putty and surplus.
Wherein, the prealloy powder contains 0.10~0.15wt% carbon, 0.05~0.15wt% with weight percentage
Boron, 20.0~22.5wt% copper, 2.0~3.0wt% tin, 3.2~4.0wt% nickel, 0.03~0.08wt% zirconium, it is remaining
Measure as iron.The prealloy powder can be for example atomized alloy powder or mechanical alloy powder, and mist is preferably used from a cost perspective
Chemical combination bronze, such as water atomization alloyed powder or aerosolization alloyed powder.
Wherein, the metallic bond, with weight percentage by 35~40wt% copper, 8.0~10.0wt% tin,
3.0~5.0wt% pore creating material, and the iron of surplus are constituted.
Wherein, the section matrix uses steel matrix, and the steel matrix contains C in terms of chemical composition：0.62~
0.68wt%, Si：0.18~0.35wt%, Mn：0.88~1.25wt%, Cr：0.05~0.25wt%, Cu：0.10~
0.20wt%, Ni≤0.20wt%, S≤0.03wt%, P≤0.030wt%, surplus are Fe and inevitable impurity；It is described
Steel matrix is preferably incubated 45~60min at 850~880 DEG C, is then furnace-cooled to 720~750 DEG C of 2.0~3.0h of insulation, is furnace-cooled to
Air cooling room temperature after 650~660 DEG C.The steel matrix (needs to control Ni's by high carbon content, and by composition design
Content) and heat treatment process specification, it is high to result in not only intensity, and the characteristic of good toughness, so as to by diamond
Tool design and ensures its service life into the form of dry chip.Yield strength >=800MPa of the steel matrix, tensile strength
>=980MPa, yield tensile ratio >=0.8, elongation at break is 15~22%.
Wherein, in the dry chip diamond segment quantity 6~30, preferably 8~20, more preferably 8~15
It is individual.
Wherein, it is described section matrix a diameter of 100~300mm, preferably 125~250mm, for example can for 125mm,
150mm, 200mm, 250mm etc..It is described section matrix thickness be 0.3~5.0mm, for example can be 0.3~2.0mm, 0.5~
1.2mm, 0.3~0.8mm etc..
Compared with immediate prior art, the two-sided dry chip that concaves of hot pressing of the present invention has following beneficial effect
Really：
The dry chip of the present invention not only significantly improves the hold of diamond particles, and its anti-wear performance is good, uses
Life-span is high；And not only reduce energy consumption in processing and be processed the loss of material, so as to also improve cut quality.
Brief description of the drawings
Fig. 1 is the structural representation of the two-sided dry chip that concaves of hot pressing of the present invention.
Fig. 2 is cross-sectional structure schematic diagrames of the Fig. 1 along A-A directions.
Embodiment
It is further elaborated below with reference to the specific embodiment dry chip that concaves two-sided to hot pressing of the present invention, with
Those skilled in the art is helped to have more complete, accurate and deep understanding to inventive concept of the invention, technical scheme；Need
It is pointed out that the description in embodiment about structure, function and material etc. is all exemplary, and does not imply that and invention is protected
Protect the limitation of scope.
As shown in accompanying drawing 1-2, the two-sided dry chip that concaves of hot pressing of the invention, including section matrix 10 and diamond segment
20, the section matrix 10 includes circular body 11 and the annular installation to be formed that stretches out from the outward flange of the circular body
End 12.The circular body is provided centrally with mounting hole, and the mounting hole over-assemble has metal flange 40.The annular is installed
The upper and lower surface at end is respectively formed on diamond segment 20.The quantity of diamond segment is 14 in Fig. 1, certainly according to reality
Border needs, and the quantity of diamond segment can be 6~30 in the dry chip, angularly be examined from cutting efficiency and quality
Consider, the quantity of diamond segment is preferably 8~20, more preferably 8~15.The upper surface of the diamond segment and following table
It is provided with the U-shaped tooth 21 that concaves, Fig. 1 on each diamond segment including 4 U-shaped teeth that concave, is gone back certainly according to design on face
The situation of 3~8 teeth can be selected.The chip area 30 for extending to the circular body is provided between adjacent diamond segment.
It is described section matrix a diameter of 100~300mm, preferably 125~250mm, for example can for 125mm, 150mm, 200mm,
230th, 250mm, a diameter of 230mm for matrix of being cut into slices described in Fig. 1.The thickness of the section matrix is 0.2~5.0mm, for example
Can be 0.3~2.0mm, 0.5~1.2mm, 0.3~0.8mm.
In order that obtaining dry chip has the service life improved, the section matrix uses steel matrix in the present invention, institute
State steel matrix and contain C in terms of chemical composition：0.62~0.68wt%, Si：0.18~0.35wt%, Mn：0.88~1.25wt%,
Cr：0.05~0.25wt%, Cu：0.10~0.20wt%, Ni≤0.20wt%, S≤0.03wt%, P≤0.030wt%, it is remaining
Measure as Fe and inevitable impurity；The steel matrix is preferably incubated 45~60min at 850~880 DEG C, is then furnace-cooled to 720
~750 DEG C of 2.0~3.0h of insulation, are furnace-cooled to air cooling room temperature after 650~660 DEG C.The steel matrix by high carbon content,
And by composition design (needing to control Ni content) and heat treatment process specification, result in not only intensity height, Er Qieren
The good characteristic of property, so as to which diamond tool to be designed to the form of dry chip, and ensures its service life.The steel matrix
Yield strength >=800MPa, tensile strength >=980MPa, yield tensile ratio >=0.8, elongation at break be 15~22%.
In the present invention, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the diamond
Concentration be 0.50~0.80ct/cm3；The carcass powder by weight percentage, by 14~16wt% prealloy powder, 35
The metallic bond composition of~40wt% copper powder, 6~8wt% glass putty and surplus.The prealloy powder is with weight percentage
The boron of carbon, 0.05~0.15wt% containing 0.10~0.15wt%, 20.0~22.5wt% copper, 2.0~3.0wt%
Tin, 3.2~4.0wt% nickel, 0.03~0.08wt% zirconium, surplus is iron.The prealloy powder can for example close for atomization
Bronze or mechanical alloy powder, preferably use atomized alloy powder, such as water atomization alloyed powder or aerosol chemical combination from a cost perspective
Bronze.The metallic bond, with weight percentage by 35~40wt% copper, 8.0~10.0wt% tin, 3.0~
5.0wt% pore creating material, and the iron of surplus are constituted.The pore creating material is such as optional Brown Alundum and/or graphite particle, certainly
Other pore creating materials can also be selected, are not restricted by.
Preferably, in the present invention, in the diamond, 30~35%, granularity that accounts for that granularity is 35/40 is 40/
45 account for 35~40%, granularity accounts for 25~30% for 45/50.
In the present invention, the two-sided dry chip that concaves of the hot pressing is prepared by following process：Dispensing-letter is made-is cold-pressed-
Hot pressed sintering-pad punching-paints-puts the first edge on a knife or a pair of scissors-test package storage.
Embodiment 1
In the present embodiment, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the Buddha's warrior attendant
The concentration of stone is 0.66ct/cm3, wherein accounting for for granularity 35,/40 30%, 40/45 account for 40%, 45/50 and account for 30%.The carcass powder
End by weight percentage, is combined by the metal of 14wt% prealloy powder, 40wt% copper powder, 6wt% glass putty and surplus
Agent is constituted.The prealloy powder be with weight percentage contain 0.15wt% carbon, 0.10wt% boron, 20.0wt% copper,
3.0wt% tin, 4.0wt% nickel, 0.08wt% zirconium, surplus are the water atomization alloyed powder of iron.The metallic bond, with
Weight percentage by 40wt% copper, 8.0wt% tin, 3.5wt% Brown Alundum, 1.5wt% graphite particle, and surplus
Iron is constituted.The preparation technology of the two-sided dry chip that concaves of the hot pressing is as follows：
1) dispensing：Represented with above-mentioned percentage by weight, take metallic bond, prealloy powder, copper powder, glass putty and diamond,
Molding mass is made in premix, and using batch mixer, batch mixing obtains molding mass in 120 minutes.
2) granulate：Granulating agent is added into mixed molding mass and carries out batch mixing, simple granulation.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the molding mass of half is first delivered, is then placed in section matrix, then deliver residue
Molding mass be assembled into cold moudling punching block extrusion forming and obtain dry chip blank.
4) hot pressed sintering：Obtained dry chip blank is assembled in Graphite pad, hot pressing burning is carried out in argon gas atmosphere
Knot, the temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry chip pad punching after hot pressed sintering, paint, put the first edge on a knife or a pair of scissors.
Embodiment 2
In the present embodiment, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the Buddha's warrior attendant
The concentration of stone is 0.66ct/cm3, wherein accounting for for granularity 35,/40 30%, 40/45 account for 40%, 45/50 and account for 30%.The carcass powder
End by weight percentage, is combined by the metal of 15wt% prealloy powder, 35wt% copper powder, 8wt% glass putty and surplus
Agent is constituted.The prealloy powder be with weight percentage contain 0.10wt% carbon, 0.15wt% boron, 22.5wt% copper,
2.0wt% tin, 3.2wt% nickel, 0.03wt% zirconium, surplus are the water atomization alloyed powder of iron.The metallic bond, with
Weight percentage by 35wt% copper, 10.0wt% tin, 3.5wt% Brown Alundum, 1.5wt% graphite particle, and surplus
Iron composition.The preparation technology of the two-sided dry chip that concaves of the hot pressing is as follows：
1) dispensing：Represented with above-mentioned percentage by weight, take metallic bond, prealloy powder, copper powder, glass putty and diamond,
Molding mass is made in premix, and using batch mixer, batch mixing obtains molding mass in 120 minutes.
2) granulate：Granulating agent is added into mixed molding mass and carries out batch mixing, simple granulation.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the molding mass of half is first delivered, is then placed in section matrix, then deliver residue
Molding mass be assembled into cold moudling punching block extrusion forming and obtain dry chip blank.
4) hot pressed sintering：Obtained dry chip blank is assembled in Graphite pad, hot pressing burning is carried out in argon gas atmosphere
Knot, the temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry chip pad punching after hot pressed sintering, paint, put the first edge on a knife or a pair of scissors.
Embodiment 3
In the present embodiment, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the Buddha's warrior attendant
The concentration of stone is 0.66ct/cm3, wherein accounting for for granularity 35,/40 30%, 40/45 account for 40%, 45/50 and account for 30%.The carcass powder
End by weight percentage, is combined by the metal of 16wt% prealloy powder, 38wt% copper powder, 7wt% glass putty and surplus
Agent is constituted.The prealloy powder be with weight percentage contain 0.10wt% carbon, 0.15wt% boron, 22.5wt% copper,
2.0wt% tin, 3.2wt% nickel, 0.03wt% zirconium, surplus are the water atomization alloyed powder of iron.The metallic bond, with
Weight percentage by 35wt% copper, 10.0wt% tin, 3.5wt% Brown Alundum, 1.5wt% graphite particle, and surplus
Iron composition.The preparation technology of the two-sided dry chip that concaves of the hot pressing is as follows：
1) dispensing：Represented with above-mentioned percentage by weight, take metallic bond, prealloy powder, copper powder, glass putty and diamond,
Molding mass is made in premix, and using batch mixer, batch mixing obtains molding mass in 120 minutes.
2) granulate：Granulating agent is added into mixed molding mass and carries out batch mixing, simple granulation.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the molding mass of half is first delivered, is then placed in section matrix, then deliver residue
Molding mass be assembled into cold moudling punching block extrusion forming and obtain dry chip blank.
4) hot pressed sintering：Obtained dry chip blank is assembled in Graphite pad, hot pressing burning is carried out in argon gas atmosphere
Knot, the temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry chip pad punching after hot pressed sintering, paint, put the first edge on a knife or a pair of scissors.
Comparative example 1
In this comparative example, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the Buddha's warrior attendant
The concentration of stone is 0.66ct/cm3, wherein accounting for for granularity 35,/40 30%, 40/45 account for 40%, 45/50 and account for 30%.The carcass powder
End by weight percentage, by 0.02wt% carbon, 0.02wt% boron, 38.5wt% copper, 6.5wt% tin, 0.5wt%
Nickel, 12.5wt% iron, and surplus metallic bond composition.The metallic bond is with weight percentage by 35wt%'s
Copper, 10.0wt% tin, 3.5wt% Brown Alundum, 1.5wt% graphite particle, and the iron of surplus are constituted.The hot pressing is two-sided
The preparation technology for the dry chip that concaves is as follows：
1) dispensing：Represented with above-mentioned percentage by weight, take metallic bond, prealloy powder, copper powder, glass putty and diamond,
Molding mass is made in premix, and using batch mixer, batch mixing obtains molding mass in 120 minutes.
2) granulate：Granulating agent is added into mixed molding mass and carries out batch mixing, simple granulation.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the molding mass of half is first delivered, is then placed in section matrix, then deliver residue
Molding mass be assembled into cold moudling punching block extrusion forming and obtain dry chip blank.
4) hot pressed sintering：Obtained dry chip blank is assembled in Graphite pad, hot pressing burning is carried out in argon gas atmosphere
Knot, the temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry chip pad punching after hot pressed sintering, paint, put the first edge on a knife or a pair of scissors.
Comparative example 2
In this comparative example, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the Buddha's warrior attendant
The concentration of stone is 0.60ct/cm3, wherein accounting for for granularity 35,/40 35%, 40/45 account for 40%, 45/50 and account for 25%.The carcass powder
End by weight percentage, is made up of 60.0wt% prealloy powder and the metallic bond of surplus.The prealloy powder is water
Atomized powder, its chemical composition with weight percentage contain by 0.12wt% carbon, 0.15wt% boron, 10.5wt% tin,
0.9wt% nickel, 20.0wt% iron, surplus is copper.The metallic bond with weight percentage by 35wt% copper,
10.0wt% tin, 3.5wt% Brown Alundum, 1.5wt% graphite particle, and the iron of surplus are constituted.The hot pressing two-sided concave
The preparation technology of oblique dry chip is as follows：
1) dispensing：Represented with above-mentioned percentage by weight, take metallic bond, prealloy powder, copper powder, glass putty and diamond,
Molding mass is made in premix, and using batch mixer, batch mixing obtains molding mass in 120 minutes.
2) granulate：Granulating agent is added into mixed molding mass and carries out batch mixing, simple granulation.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the molding mass of half is first delivered, is then placed in section matrix, then deliver residue
Molding mass be assembled into cold moudling punching block extrusion forming and obtain dry chip blank.
4) hot pressed sintering：Obtained dry chip blank is assembled in Graphite pad, hot pressing burning is carried out in argon gas atmosphere
Knot, the temperature of hot pressed sintering is maintained at 830~850 DEG C.
5) pad punching, paint, put the first edge on a knife or a pair of scissors：By the dry chip after hot pressed sintering, descale is carried out, is processed by technological requirement
Into required size.
Comparative example 3
In this comparative example, the raw material of the diamond segment is formed by diamond and carcass powder, wherein the Buddha's warrior attendant
The concentration of stone is 0.66ct/cm3, wherein accounting for for granularity 35,/40 30%, 40/45 account for 40%, 45/50 and account for 30%.The carcass powder
End by weight percentage, is combined by the metal of 14wt% prealloy powder, 40wt% copper powder, 6wt% glass putty and surplus
Agent is constituted.The prealloy powder be with weight percentage contain 20.0wt% copper, 3.0wt% tin, 4.0wt% nickel,
0.08wt% zirconium, surplus is the water atomization alloyed powder of iron.The metallic bond, with weight percentage by 40wt% copper,
8.0wt% tin, 3.5wt% Brown Alundum, 1.5wt% graphite particle, and the iron of surplus are constituted.The hot pressing is two-sided to concave
The preparation technology of dry chip is as follows：
1) dispensing：Represented with above-mentioned percentage by weight, take metallic bond, prealloy powder, copper powder, glass putty and diamond,
Molding mass is made in premix, and using batch mixer, batch mixing obtains molding mass in 120 minutes.
2) granulate：Granulating agent is added into mixed molding mass and carries out batch mixing, simple granulation.
3) it is cold-pressed：Moulds of industrial equipment are adjusted, the molding mass of half is first delivered, is then placed in section matrix, then deliver residue
Molding mass be assembled into cold moudling punching block extrusion forming and obtain dry chip blank.
4) hot pressed sintering：Obtained dry chip blank is assembled in Graphite pad, hot pressing burning is carried out in argon gas atmosphere
Knot, the temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry chip pad punching after hot pressed sintering, paint, put the first edge on a knife or a pair of scissors.
The performance of the diamond segment obtained after sintering, with reference to GB/T 230.1-2009 metal material Rockwell hardness tests
Part 1 tests hardness；Bending strength is determined with reference to GB/T5319-2002 sintered metal materials cross-breaking strength；Reference
GBT5318-1985 sintered metal materials non-incisions impact specimen determines impact flexibility, and its result is as shown in table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Hardness (HRB) | 105 | 108 | 112 | 108 | 95 | 90 |
| Bending strength (MPa) | 1200 | 1280 | 1390 | 780 | 890 | 710 |
| Impact flexibility (J/cm2) | 28 | 32 | 30 | 15 | 21 | 20 |
For the ordinary skill in the art, simply the present invention is exemplarily described for specific embodiment,
The obvious present invention, which is implemented, to be not subject to the restrictions described above, and is entered as long as employing the inventive concept and technical scheme of the present invention
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (6)
1. a kind of two-sided dry chip that concaves of hot pressing, including section matrix and diamond segment, the section matrix include circular main
Body and the annular installation end to be formed that stretches out from the outward flange of the circular body, are installed by cold-press process in the annular
The upper and lower surface at end is respectively formed on diamond segment base substrate, and forms the diamond tool by hot-pressing sintering technique
Head, the hot-pressing sintering technique is that 100~150MPa, temperature are progress under conditions of 830~880 DEG C in pressure；The Buddha's warrior attendant
The raw material of stone cutter head is formed by diamond and carcass powder, the carcass powder by weight percentage, by 14~16wt%'s
Prealloy powder, 35~40wt% copper powder, the metallic bond composition of 6~8wt% glass putty and surplus；The prealloy powder with
Weight percentage contain 0.10~0.15wt% carbon, 0.05~0.15wt% boron, 20.0~22.5wt% copper, 2.0~
3.0wt% tin, 3.2~4.0wt% nickel, 0.03~0.08wt% zirconium, surplus is iron；The metallic bond, with weight
Measure percentage meter by 35~40wt% copper, 8.0~10.0wt% tin, 3.0~5.0wt% pore creating material, and surplus iron group
Into.
2. the two-sided dry chip that concaves of hot pressing according to claim 1, it is characterised in that：The upper surface of the diamond segment
The row for extending to the circular body is provided with being provided with lower surface between the U-shaped tooth that concaves, adjacent diamond segment
Consider groove to be worth doing.
3. the two-sided dry chip that concaves of hot pressing according to claim 1, it is characterised in that：The centrally disposed of matrix of cutting into slices
There is mounting hole, the mounting hole over-assemble has metal flange.
4. the two-sided dry chip that concaves of hot pressing according to claim 1, it is characterised in that：The concentration of the diamond is 0.50
~0.80ct/cm3。
5. the two-sided dry chip that concaves of hot pressing according to claim 1, it is characterised in that：The section matrix uses base steel
Body, the steel matrix contains C in terms of chemical composition：0.62~0.68wt%, Si：0.18~0.35wt%, Mn：0.88~
1.25wt%, Cr：0.05~0.25wt%, Cu：0.10~0.20wt%, Ni≤0.20wt%, S≤0.03wt%, P≤
0.030wt%, surplus is Fe and inevitable impurity；The steel matrix is incubated 45~60min, Ran Houlu at 850~880 DEG C
It is cooled to 720~750 DEG C of 2.0~3.0h of insulation, is furnace-cooled to air cooling room temperature after 650~660 DEG C；The surrender of the steel matrix is strong
Degree >=800MPa, tensile strength >=980MPa, yield tensile ratio >=0.8, elongation at break is 15~22%.
6. the two-sided dry chip that concaves of hot pressing according to claim 1, it is characterised in that：Diamond segment in the dry chip
Quantity 6~30, it is described section matrix a diameter of 100~300mm.
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| CN107364010B (en) * | 2017-06-15 | 2018-11-16 | 江苏华昌工具制造有限公司 | Two-sided sintering W type groove diamond tool and preparation method thereof |
| CN107351265A (en) * | 2017-09-07 | 2017-11-17 | 江苏华昌工具制造有限公司 | Two-sided leaf-teeth dry chip |
| CN110091260A (en) * | 2019-04-23 | 2019-08-06 | 长沙华腾智能装备有限公司 | A kind of diamond scribing knife |
| CN112092204B (en) * | 2019-06-17 | 2022-06-28 | 丹阳市龙威工具有限公司 | Diamond saw blade |
| CN110394901B (en) * | 2019-06-17 | 2021-08-20 | 丹阳市龙威工具有限公司 | Diamond saw blade for bending cutting and preparation process thereof |
| CN110306097B (en) * | 2019-06-17 | 2021-08-20 | 丹阳市龙威工具有限公司 | Method for preparing diamond saw blade by cold pressing connection |
| CN114311318B (en) * | 2021-12-10 | 2024-05-14 | 黑旋风锯业股份有限公司 | Semicircular arc sintering saw blade matrix and processing technology |
| CN114318099B (en) * | 2022-01-13 | 2022-09-23 | 河南黄河旋风股份有限公司 | Metal matrix-diamond composite material for drilling hard rock and preparation method thereof |
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| CN200998846Y (en) * | 2007-02-02 | 2008-01-02 | 张小军 | Novel braze welding diamond tool |
| CN201020568Y (en) * | 2007-04-05 | 2008-02-13 | 中国科学院广州电子技术研究所 | Diamond circular saw bit |
| CN101380784B (en) * | 2008-10-14 | 2012-01-18 | 广东奔朗新材料股份有限公司 | Saw blade and production method thereof |
| CN104907947B (en) * | 2015-05-25 | 2017-08-29 | 江苏华昌工具制造有限公司 | Connect the diamond cutting grinding of metal flange |
| CN104907946B (en) * | 2015-05-25 | 2017-06-16 | 江苏华昌工具制造有限公司 | Sawtooth two-sided concave U sharp concrete laser welding cutting sheets |
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