CN105904598A - Hot-pressing double-sided concave inclined dry slice - Google Patents
Hot-pressing double-sided concave inclined dry slice Download PDFInfo
- Publication number
- CN105904598A CN105904598A CN201610343861.9A CN201610343861A CN105904598A CN 105904598 A CN105904598 A CN 105904598A CN 201610343861 A CN201610343861 A CN 201610343861A CN 105904598 A CN105904598 A CN 105904598A
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- China
- Prior art keywords
- dry section
- diamond
- concaves
- hot
- hot pressing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007731 hot pressing Methods 0.000 title claims abstract description 30
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 68
- 239000010432 diamond Substances 0.000 claims abstract description 68
- 238000005245 sintering Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims description 57
- 239000011159 matrix material Substances 0.000 claims description 44
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 24
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 18
- 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
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 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
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 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
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 19
- 238000003825 pressing Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 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
- 239000008187 granular material Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000003979 granulating agent Substances 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
- 238000009413 insulation Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000012387 aerosolization Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004567 concrete 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
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- -1 pottery Substances 0.000 description 1
- 239000011435 rock Substances 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
Abstract
The invention relates to a hot-pressing double-sided concave inclined dry slice and belongs to the technical field of ultra-hard cutting products. The hot-pressing double-sided concave inclined dry slice comprises a slice base body and a diamond tool bit; the slice base body comprises a round body and an annular installing end formed in the manner that the outer edge of the round body extends outwards; the upper surface and the lower surface of the annular installing end are each provided with a diamond tool bit blank body through a cold pressing process; the diamond tool bit is formed through a hot-pressing sintering process; and the hot-pressing sintering process is performed under the conditions that pressure ranges from 100 MPa to 150 MPa and temperature ranges from 830 DEG C to 880 DEG C. By means of the dry slice, the holding force of diamond particles is remarkably improved, the abrasion-resistant performance of the dry slice is good, and the service life is long; and during machining, the energy consumption and losses of machined materials are reduced, and therefore the cutting quality is improved.
Description
Technical field
The present invention relates to the technical field of superhard cut product, it is more particularly related to a kind of for marble, Hua Gang
The two-sided dry section that concaves of the hot pressing of the nonmetal crisp and hard material processing such as rock, the cutting of cement concrete and deburring.
Background technology
Current market, diamond tool is widely used to marble, granite, concrete, Colophonium, pottery, glass, pearl
The cutting of the hard materials such as gem-jade and repairing processing；Improve constantly cutting efficiency, reduce spillage of material, improve diamond tool
Service life be the direction that market is pursued jointly.Diamond tool generally includes diamond segment and matrix, and matrix thickness determines
Diamond segment thickness, matrix thickness is the thickest, and during cutting, joint-cutting is the widest, and cutting efficiency is the lowest, and spillage of material is the biggest, economic effect
Benefit is the poorest, and matrix thickness is thinning, and cutter head is thinning, and cutting efficiency promotes, and spillage of material declines；Will cause after but matrix is thinning
The rigidity of matrix own declines, and bears load-carrying ability and reduces, and produces beat, and then lose cutting power during cutting.The most how to solve
The certainly contradiction between matrix thickness and rigidity, in the case of ensureing matrix rigid, produces thinner dry diamond section always
The difficult problem of puzzlement people.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, it is an object of the invention to provide the two-sided dry section that concaves of a kind of hot pressing.
In order to solve to invent described technical problem and realize goal of the invention, present invention employs techniques below scheme:
The two-sided dry section that concaves of a kind of hot pressing, including section matrix and diamond segment, described section matrix include circular body and
From the outward flange of described circular body stretch out formed annular installation end, by cold-press process described annular installation end upper
Surface and lower surface are respectively formed on diamond segment base substrate, and form described diamond segment, described heat by hot-pressing sintering technique
Pressure sintering process pressure be 100～150MPa, temperature be 830～880 DEG C under conditions of carry out.
Wherein, the upper and lower surface of described diamond segment is provided with the U-shaped tooth that concaves, adjacent diamond segment it
Between be provided with the chip area extending to described circular body.
Wherein, described section matrix be provided centrally with installing hole, described installing hole is assembled with metal flange.
Wherein, the raw material of described diamond segment is formed by diamond and carcass powder, and the concentration of wherein said diamond is
0.50～0.80ct/cm3；Described carcass powder by weight percentage, the copper powder of prealloy powder, 35～40wt% by 14～16wt%,
The glass putty of 6～8wt% and the metallic bond composition of surplus.
Wherein, described prealloy powder contain with weight percentage 0.10～0.15wt% carbon, 0.05～0.15wt% boron,
The zirconium of the nickel of the stannum of copper, 2.0～3.0wt%, 3.2～4.0wt%, 0.03～the 0.08wt% of 20.0～22.5wt%, surplus is ferrum.Described
Prealloy powder can be such as atomized alloy powder or mechanical alloy powder, atomized alloy powder is preferably used from a cost perspective, such as
Water atomization alloyed powder or aerosolization alloyed powder.
Wherein, described metallic bond, with weight percentage by 35～40wt% the stannum of copper, 8.0～10.0wt%, 3.0～5.0wt%
Pore creating material, and surplus ferrum composition.
Wherein, described section matrix use steel matrix, described steel matrix in terms of chemical composition containing C: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；Described steel matrix is preferably 850～880 DEG C of insulations
45～60min, then stove be cooled to 720～750 DEG C insulation 2.0～3.0h, stove be cooled to 650～660 DEG C after air cooling room temperature.Described
Steel matrix is by high carbon content, and designs (content needing to control Ni) and heat treatment process specification by composition, it is possible to
Obtain not only intensity high, and the characteristic of good toughness such that it is able to diamond tool is designed to the form of dry section, and ensures
Its service life.Yield strength >=the 800MPa of described steel matrix, tensile strength >=980MPa, yield tensile ratio >=0.8, extension at break
Rate is 15～22%.
Wherein, the quantity 6 of diamond segment～30 in described dry section, preferably 8～20, more preferably 8～15.
Wherein, a diameter of the 100～300mm of described section matrix, preferably 125～250mm, can be such as 125mm,
150mm, 200mm, 250mm etc..The thickness of described section matrix is 0.3～5.0mm, such as, can be 0.3～2.0mm,
0.5～1.2mm, 0.3～0.8mm etc..
Compared with immediate prior art, the two-sided dry section that concaves of hot pressing of the present invention has the advantages that
The dry section of the present invention not only significantly improves the hold of diamond particles, and its anti-wear performance is good, high life；
And not only reduce energy consumption and the loss of processed material man-hour adding, thus also improve cut quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two-sided dry section that concaves of hot pressing of the present invention.
Fig. 2 is the Fig. 1 cross-sectional structure schematic diagram along A-A direction.
Detailed description of the invention
It is further elaborated below with reference to the specific embodiment dry section that concaves two-sided to hot pressing of the present invention, to help this
The technical staff in field has more complete, accurate and deep understanding to inventive concept, the technical scheme of the present invention；It may be noted that
It is that in embodiment, description about structure, function and material etc. is all exemplary, and does not implies that invention protection domain
Limit.
As shown in accompanying drawing 1-2, the two-sided dry section that concaves of the hot pressing of the present invention, including section matrix 10 and diamond segment 20, institute
State section matrix 10 include circular body 11 and the outward flange from described circular body stretch out formed annular installation end 12.
Described circular body be provided centrally with installing hole, described installing hole is assembled with metal flange 40.Described annular installation end upper
Surface and lower surface are respectively formed on diamond segment 20.In Fig. 1, the quantity of diamond segment is 14, certainly according to actual need
, in described dry section, the quantity of diamond segment can be 6～30, angularly considers from cutting efficiency and quality, gold
The quantity of diamond tool bit is preferably 8～20, more preferably 8～15.In the upper and lower surface of described diamond segment all
It is provided with the U-shaped tooth 21 that concaves, Fig. 1 includes on each diamond segment 4 U-shaped teeth that concave, certainly also may be used according to design
To select the situation of 3～8 teeth.The chip area 30 extending to described circular body it is provided with between adjacent diamond segment.Described
Section matrix a diameter of 100～300mm, preferably 125～250mm, can be such as 125mm, 150mm, 200mm,
230,250mm, a diameter of 230mm of matrix of cutting into slices described in Fig. 1.The thickness of described section matrix is 0.2～5.0mm,
Can be such as 0.3～2.0mm, 0.5～1.2mm, 0.3～0.8mm.
So that dry section has the service life of raising, the most described section matrix uses steel matrix, described base steel
Body in terms of chemical composition containing C: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 not
Evitable impurity；Described steel matrix is preferably incubated 45～60min at 850～880 DEG C, and then stove is cooled to 720～750 DEG C of insulations
2.0～3.0h, stove be cooled to 650～660 DEG C after air cooling room temperature.Described steel matrix is by high carbon content, and is designed by composition
(needing to control the content of Ni) and heat treatment process specification, it is possible to obtain not only intensity high, and the characteristic of good toughness, from
And diamond tool can be designed to the form of dry section, and ensure its service life.Yield strength >=800 of described steel matrix
MPa, tensile strength >=980MPa, yield tensile ratio >=0.8, elongation at break is 15～22%.
In the present invention, the raw material of described diamond segment is formed by diamond and carcass powder, the concentration of wherein said diamond
It is 0.50～0.80ct/cm3；Described carcass powder by weight percentage, prealloy powder, 35～the 40wt%'s by 14～16wt%
The glass putty of copper powder, 6～8wt% and the metallic bond composition of surplus.Described prealloy powder contains with weight percentage
The stannum of the copper of the boron of carbon, 0.05～0.15wt%, 20.0～22.5wt%, 2.0～3.0wt%, 3.2～the 4.0wt%'s of 0.10～0.15wt%
The zirconium of nickel, 0.03～0.08wt%, surplus is ferrum.Described prealloy powder can be such as atomized alloy powder or mechanical alloy powder, from
Cost angle considers atomized alloy powder, such as water atomization alloyed powder or aerosolization alloyed powder are preferably used.Described metallic bond,
With weight percentage by 35～40wt% the pore creating material of the stannum of copper, 8.0～10.0wt%, 3.0～5.0wt%, and the ferrum composition of surplus.
Described pore creating material such as may select Brown Alundum and/or graphite granule etc., naturally it is also possible to selects other pore creating material, is not restricted by.
As preferably, in the present invention, in described diamond, granularity be 35/40 account for 30～35%, granularity be 40/45 to account for
35～40%, granularity be 45/50 to account for 25～30%.
In the present invention, the two-sided dry section that concaves of described hot pressing is prepared by following operation :-heat is made-colded pressing in dispensing-letter
Pressure sintering-pad punching-spray paint-put the first edge on a knife or a pair of scissors-test package warehouse-in.
Embodiment 1
In the present embodiment, the raw material of described diamond segment is formed by diamond and carcass powder, wherein said diamond dense
Degree is 0.66ct/cm3, wherein accounting for of granularity 35,/40 30%, 40/45 accounts for 40%, 45/50 and accounts for 30%.Described carcass powder with
Percentage by weight meter, is made up of the metallic bond of the prealloy powder of 14wt%, the copper powder of 40wt%, the glass putty of 6wt% and surplus.
Described prealloy powder be contain 0.15wt% with weight percentage carbon, the boron of 0.10wt%, the copper of 20.0wt%, the stannum of 3.0wt%,
The nickel of 4.0wt%, the zirconium of 0.08wt%, surplus is the water atomization alloyed powder of ferrum.Described metallic bond, with weight percentage by
The copper of 40wt%, the stannum of 8.0wt%, the Brown Alundum of 3.5wt%, the graphite granule of 1.5wt%, and the ferrum composition of surplus.Described heat
Press the preparation technology of the two-sided dry section that concaves as follows:
1) dispensing: represent with above-mentioned percentage by weight, takes metallic bond, prealloy powder, copper powder, glass putty and diamond, in advance
Being blended into molding mass, use batch mixer, batch mixing obtains molding mass in 120 minutes.
2) pelletize: granulating agent is added mixed molding mass and carries out batch mixing, simple pelletize.
3) cold pressing: adjust moulds of industrial equipment, first throw in the molding mass of half, be then placed in matrix of cutting into slices, then throw in remaining one-tenth
Moulding mixture is assembled into extrusion forming in cold moudling punching block and obtains dry section blank.
4) hot pressed sintering: the dry section blank that will obtain, is assembled in Graphite pad, carries out hot pressed sintering in argon gas atmosphere,
The temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry section pad punching after hot pressed sintering, spray paint, put the first edge on a knife or a pair of scissors.
Embodiment 2
In the present embodiment, the raw material of described diamond segment is formed by diamond and carcass powder, wherein said diamond dense
Degree is 0.66ct/cm3, wherein accounting for of granularity 35,/40 30%, 40/45 accounts for 40%, 45/50 and accounts for 30%.Described carcass powder with
Percentage by weight meter, is made up of the metallic bond of the prealloy powder of 15wt%, the copper powder of 35wt%, the glass putty of 8wt% and surplus.
Described prealloy powder be contain 0.10wt% with weight percentage carbon, the boron of 0.15wt%, the copper of 22.5wt%, the stannum of 2.0wt%,
The nickel of 3.2wt%, the zirconium of 0.03wt%, surplus is the water atomization alloyed powder of ferrum.Described metallic bond, with weight percentage by
The copper of 35wt%, the stannum of 10.0wt%, the Brown Alundum of 3.5wt%, the graphite granule of 1.5wt%, and the ferrum composition of surplus.Described heat
Press the preparation technology of the two-sided dry section that concaves as follows:
1) dispensing: represent with above-mentioned percentage by weight, takes metallic bond, prealloy powder, copper powder, glass putty and diamond, in advance
Being blended into molding mass, use batch mixer, batch mixing obtains molding mass in 120 minutes.
2) pelletize: granulating agent is added mixed molding mass and carries out batch mixing, simple pelletize.
3) cold pressing: adjust moulds of industrial equipment, first throw in the molding mass of half, be then placed in matrix of cutting into slices, then throw in remaining one-tenth
Moulding mixture is assembled into extrusion forming in cold moudling punching block and obtains dry section blank.
4) hot pressed sintering: the dry section blank that will obtain, is assembled in Graphite pad, carries out hot pressed sintering in argon gas atmosphere,
The temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry section pad punching after hot pressed sintering, spray paint, put the first edge on a knife or a pair of scissors.
Embodiment 3
In the present embodiment, the raw material of described diamond segment is formed by diamond and carcass powder, wherein said diamond dense
Degree is 0.66ct/cm3, wherein accounting for of granularity 35,/40 30%, 40/45 accounts for 40%, 45/50 and accounts for 30%.Described carcass powder with
Percentage by weight meter, is made up of the metallic bond of the prealloy powder of 16wt%, the copper powder of 38wt%, the glass putty of 7wt% and surplus.
Described prealloy powder be contain 0.10wt% with weight percentage carbon, the boron of 0.15wt%, the copper of 22.5wt%, the stannum of 2.0wt%,
The nickel of 3.2wt%, the zirconium of 0.03wt%, surplus is the water atomization alloyed powder of ferrum.Described metallic bond, with weight percentage by
The copper of 35wt%, the stannum of 10.0wt%, the Brown Alundum of 3.5wt%, the graphite granule of 1.5wt%, and the ferrum composition of surplus.Described heat
Press the preparation technology of the two-sided dry section that concaves as follows:
1) dispensing: represent with above-mentioned percentage by weight, takes metallic bond, prealloy powder, copper powder, glass putty and diamond, in advance
Being blended into molding mass, use batch mixer, batch mixing obtains molding mass in 120 minutes.
2) pelletize: granulating agent is added mixed molding mass and carries out batch mixing, simple pelletize.
3) cold pressing: adjust moulds of industrial equipment, first throw in the molding mass of half, be then placed in matrix of cutting into slices, then throw in remaining one-tenth
Moulding mixture is assembled into extrusion forming in cold moudling punching block and obtains dry section blank.
4) hot pressed sintering: the dry section blank that will obtain, is assembled in Graphite pad, carries out hot pressed sintering in argon gas atmosphere,
The temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry section pad punching after hot pressed sintering, spray paint, put the first edge on a knife or a pair of scissors.
Comparative example 1
In this comparative example, the raw material of described diamond segment is formed by diamond and carcass powder, wherein said diamond dense
Degree is 0.66ct/cm3, wherein accounting for of granularity 35,/40 30%, 40/45 accounts for 40%, 45/50 and accounts for 30%.Described carcass powder with
Percentage by weight meter, by the carbon of 0.02wt%, the boron of 0.02wt%, the copper of 38.5wt%, the stannum of 6.5wt%, the nickel of 0.5wt%,
The ferrum of 12.5wt%, and the metallic bond composition of surplus.Described metallic bond with weight percentage by the copper of 35wt%,
The stannum of 10.0wt%, the Brown Alundum of 3.5wt%, the graphite granule of 1.5wt%, and the ferrum composition of surplus.Described hot pressing is two-sided to concave
The preparation technology of dry section is as follows:
1) dispensing: represent with above-mentioned percentage by weight, takes metallic bond, prealloy powder, copper powder, glass putty and diamond, in advance
Being blended into molding mass, use batch mixer, batch mixing obtains molding mass in 120 minutes.
2) pelletize: granulating agent is added mixed molding mass and carries out batch mixing, simple pelletize.
3) cold pressing: adjust moulds of industrial equipment, first throw in the molding mass of half, be then placed in matrix of cutting into slices, then throw in remaining one-tenth
Moulding mixture is assembled into extrusion forming in cold moudling punching block and obtains dry section blank.
4) hot pressed sintering: the dry section blank that will obtain, is assembled in Graphite pad, carries out hot pressed sintering in argon gas atmosphere,
The temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry section pad punching after hot pressed sintering, spray paint, put the first edge on a knife or a pair of scissors.
Comparative example 2
In this comparative example, the raw material of described diamond segment is formed by diamond and carcass powder, wherein said diamond dense
Degree is 0.60ct/cm3, wherein accounting for of granularity 35,/40 35%, 40/45 accounts for 40%, 45/50 and accounts for 25%.Described carcass powder with
Percentage by weight meter, is made up of the prealloy powder of 60.0wt% and the metallic bond of surplus.Described prealloy powder is water atomized powders
End, its chemical composition contains by the carbon of 0.12wt%, the boron of 0.15wt%, the stannum of 10.5wt%, 0.9wt% with weight percentage
Nickel, the ferrum of 20.0wt%, surplus is copper.Described metallic bond with weight percentage by the copper of 35wt%, the stannum of 10.0wt%,
The Brown Alundum of 3.5wt%, the graphite granule of 1.5wt%, and the ferrum composition of surplus.The preparation work of the two-sided dry section that concaves of described hot pressing
Skill is as follows:
1) dispensing: represent with above-mentioned percentage by weight, takes metallic bond, prealloy powder, copper powder, glass putty and diamond, in advance
Being blended into molding mass, use batch mixer, batch mixing obtains molding mass in 120 minutes.
2) pelletize: granulating agent is added mixed molding mass and carries out batch mixing, simple pelletize.
3) cold pressing: adjust moulds of industrial equipment, first throw in the molding mass of half, be then placed in matrix of cutting into slices, then throw in remaining one-tenth
Moulding mixture is assembled into extrusion forming in cold moudling punching block and obtains dry section blank.
4) hot pressed sintering: the dry section blank that will obtain, is assembled in Graphite pad, carries out hot pressed sintering in argon gas atmosphere,
The temperature of hot pressed sintering is maintained at 830～850 DEG C.
5) pad punching, spray paint, put the first edge on a knife or a pair of scissors: by the dry section after hot pressed sintering, carry out descale, be processed into by technological requirement
Required size.
Comparative example 3
In this comparative example, the raw material of described diamond segment is formed by diamond and carcass powder, wherein said diamond dense
Degree is 0.66ct/cm3, wherein accounting for of granularity 35,/40 30%, 40/45 accounts for 40%, 45/50 and accounts for 30%.Described carcass powder with
Percentage by weight meter, is made up of the metallic bond of the prealloy powder of 14wt%, the copper powder of 40wt%, the glass putty of 6wt% and surplus.
Described prealloy powder be contain 20.0wt% with weight percentage copper, the stannum of 3.0wt%, the nickel of 4.0wt%, the zirconium of 0.08wt%,
Surplus is the water atomization alloyed powder of ferrum.Described metallic bond, with weight percentage by the copper of 40wt%, the stannum of 8.0wt%, 3.5wt%
Brown Alundum, the graphite granule of 1.5wt%, and surplus ferrum composition.The preparation technology of the two-sided dry section that concaves of described hot pressing is as follows:
1) dispensing: represent with above-mentioned percentage by weight, takes metallic bond, prealloy powder, copper powder, glass putty and diamond, in advance
Being blended into molding mass, use batch mixer, batch mixing obtains molding mass in 120 minutes.
2) pelletize: granulating agent is added mixed molding mass and carries out batch mixing, simple pelletize.
3) cold pressing: adjust moulds of industrial equipment, first throw in the molding mass of half, be then placed in matrix of cutting into slices, then throw in remaining one-tenth
Moulding mixture is assembled into extrusion forming in cold moudling punching block and obtains dry section blank.
4) hot pressed sintering: the dry section blank that will obtain, is assembled in Graphite pad, carries out hot pressed sintering in argon gas atmosphere,
The temperature of hot pressed sintering is maintained at 850 DEG C, and sintering pressure is 120MPa.
5) by the dry section pad punching after hot pressed sintering, spray 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 test part 1
Test hardness；Bending strength is measured with reference to GB/T5319-2002 sintered metal materials cross-breaking strength；Reference
GBT5318-1985 sintered metal materials non-incision impact specimen measures 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, the present invention is simply exemplarily described by specific embodiment, it is clear that this
Invention implements and is not subject to the restrictions described above, as long as the method design that have employed the present invention is various with what technical scheme was carried out
The improvement of unsubstantiality, or the most improved design by the present invention and technical scheme directly apply to other occasion, all at this
Within bright protection domain.
Claims (10)
1. the two-sided dry section that concaves of hot pressing, including section matrix and diamond segment, described section matrix includes circular body
Stretch out the annular installation end formed with the outward flange from described circular body, by cold-press process at described annular installation end
Upper and lower surface is respectively formed on diamond segment base substrate, and forms described diamond segment by hot-pressing sintering technique, described
Hot-pressing sintering technique pressure be 100～150MPa, temperature be 830～880 DEG C under conditions of carry out.
The two-sided dry section that concaves of hot pressing the most according to claim 1, it is characterised in that: the upper surface of described diamond segment
Be provided with the U-shaped tooth that concaves on lower surface, be provided with the chip removal extending to described circular body between adjacent diamond segment
Groove.
Hot pressing the most according to claim 1 is two-sided to concave dry section, it is characterised in that: described section matrix centrally disposed
There is installing hole, described installing hole is assembled with metal flange.
Hot pressing the most according to claim 1 is two-sided to concave dry section, it is characterised in that: the raw material of described diamond segment by
Diamond and carcass powder are formed, and the concentration of wherein said diamond is 0.50～0.80ct/cm3。
The two-sided dry section that concaves of hot pressing the most according to claim 4, it is characterised in that: described carcass powder is with weight percent
Than meter, the glass putty of the copper powder of prealloy powder, 35～40wt%, 6～8wt% and the metallic bond of surplus by 14～16wt% form.
The two-sided dry section that concaves of hot pressing the most according to claim 5, it is characterised in that: described prealloy powder is with weight percent
Meter containing 0.10～0.15wt% the copper of the boron of carbon, 0.05～0.15wt%, 20.0～22.5wt%, 2.0～3.0wt% stannum,
The zirconium of nickel, 0.03～the 0.08wt% of 3.2～4.0wt%, surplus is ferrum.
The two-sided dry section that concaves of hot pressing the most according to claim 5, it is characterised in that: described metallic bond, with weight
Percentage meter by 35～40wt% the pore creating material of the stannum of copper, 8.0～10.0wt%, 3.0～5.0wt%, and the ferrum composition of surplus.
The two-sided dry section that concaves of hot pressing the most according to claim 1, it is characterised in that: described section matrix uses steel matrix,
Described steel matrix in terms of chemical composition containing C: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
With inevitable impurity；Described steel matrix is preferably incubated 45～60min at 850～880 DEG C, and then stove is cooled to 720～750 DEG C of guarantors
Temperature 2.0～3.0h, stove be cooled to 650～660 DEG C after air cooling room temperature.
The two-sided dry section that concaves of hot pressing the most according to claim 8, it is characterised in that: yield strength >=800 of described steel matrix
MPa, tensile strength >=980MPa, yield tensile ratio >=0.8, elongation at break is 15～22%.
The two-sided dry section that concaves of hot pressing the most according to claim 1, it is characterised in that: diamond knife in described dry section
Head quantity 6～30, a diameter of the 100～300mm of described section matrix.
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| CN107364010A (en) * | 2017-06-15 | 2017-11-21 | 江苏华昌工具制造有限公司 | Two-sided sintering W type groove diamond tools and preparation method thereof |
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