CN114472889B - Ultra-thin superfinishing cutter with metal binding agent and preparation method - Google Patents
Ultra-thin superfinishing cutter with metal binding agent and preparation method Download PDFInfo
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- CN114472889B CN114472889B CN202111668461.2A CN202111668461A CN114472889B CN 114472889 B CN114472889 B CN 114472889B CN 202111668461 A CN202111668461 A CN 202111668461A CN 114472889 B CN114472889 B CN 114472889B
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 43
- 239000002184 metal Substances 0.000 title claims abstract description 43
- 239000011230 binding agent Substances 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 32
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 23
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 239000007767 bonding agent Substances 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims description 19
- 239000010432 diamond Substances 0.000 claims description 12
- 229910003460 diamond Inorganic materials 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 239000003082 abrasive agent Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 4
- 238000010923 batch production Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910007948 ZrB2 Inorganic materials 0.000 description 1
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910021343 molybdenum disilicide Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The ultra-thin superfinishing cutting knife with metal bond comprises mixing copper powder and tin powder, adding cobalt powder, mixing, adding silicon carbide, and adding abrasive to obtain material; then the materials are sintered after cold pressing to obtain a blank; processing the blank to obtain an ultra-thin ultra-precise cutting knife of the metal bonding agent; the ultra-thin ultra-precise cutting knife with 45 mu m metal bond is obtained by combining conventional raw materials with silicon carbide through synergistic cooperation and combining metal powder, has the characteristics of ultra-thin, high rigidity and good self-sharpening property, replaces the existing ultra-thin dicing knife which is used at present, has the beveling degree of less than or equal to 1 DEG, can improve the service life of 2 pieces which can only be cut into 0.5 pieces, improves the service life by 4 times, and more importantly, can realize batch production and effectively solve the problem that the prior art cannot cut continuously.
Description
Technical Field
The invention belongs to the technology of precision machining tools, and particularly relates to a 45 mu m metal bond ultrathin superfinishing cutting knife and a preparation method thereof.
Background
CSP (Chip Scale Package) is a chip-scale package meaning, and the technical performance of the new generation of memory chip packaging technology is improved, and the cutting of CSP glass as a basic material is called a necessary procedure. The diamond cutter is widely applied to material cutting tools, and the prior art adopts an electroplating or hot-pressing sintering method aiming at different cutting objects, and combines different formula compositions to obtain the cutter with different technical effects. The prior art discloses a diamond saw blade bit which is prepared from a front section material, a middle section material and a rear section material, wherein the front section material and the rear section material respectively comprise the following components in percentage by mass: diamond particles, copper powder, cobalt powder, tungsten powder, silver powder and tin powder, wherein the sum of the components is 100%; the middle section material comprises the following components in percentage by mass: diamond particles, copper powder, cobalt powder, tungsten powder, silver powder and tin powder, wherein the sum of the components is 100 percent. The prior art discloses an alloy material for a cutter and a preparation method thereof, wherein the alloy material comprises the following components in parts by mass: 12-20 parts of copper, 1-8 parts of zinc, 0.5-6 parts of tin, 0.5-3 parts of cobalt, 0.3-2.5 parts of nickel, 0.1-0.8 part of sulfur, 0.08-0.2 part of manganese, 0.5-1.8 part of silicon carbide, 2-7 parts of titanium carbide and 1-6 parts of polymethyl methacrylate. The prior art discloses an ultrathin blade for cutting, wherein the ultrathin blade is formed by mixing superhard abrasive particles, a bonding agent and a filler in proportion by applying enough pressure and temperature or by electrifying or electroplating; the coating type binding agent micro powder is adopted to replace the traditional binding agent, so that the Young modulus of the whole body is obviously improved. The prior art discloses a saw blade containing a metal matrix, a common abrasive and a superhard abrasive, wherein the metal matrix is alloy steel or carbon steel, and heat dissipation holes with the diameter of 8-10 mm are uniformly distributed on the surface of the metal matrix; the matrix contains alumina, zirconia, quartz, tungsten carbide, zirconium diboride and molybdenum disilicide, and the common abrasive contains brown corundum, silicon carbide, green silicon carbide, cubic silicon carbide and boron carbide; the superhard abrasive contains diamond and cubic boron nitride; the manufacturing process comprises the following steps: matrix powder mixing, working layer material mixing process, welding layer material mixing process, cold press molding, hot press sintering molding, arc grinding, welding, trimming and sharpening. The prior art discloses and commercially available cutting knives are respectively provided with a emphasis, and no cutting knife can be used for cutting various workpieces, so that the conventional sense is that the existing ultra-thin cutting knives can only cut 0.5 piece, so that the processing cost is increased, and more importantly, the cutting quality and the processing efficiency are influenced by halfway knife changing.
Disclosure of Invention
Aiming at the problem that the existing cutting knife cannot be applied, the invention discloses a 45 mu m metal bond ultrathin superfinishing cutting knife and a preparation method thereof, which have the characteristics of ultrathin property, high rigidity and good self-sharpening property, replace the existing ultrathin dicing knife which is used at present, have the beveling degree less than or equal to 1 DEG, have the service life of improving the existing cutting knife which can only cut 0.5 piece to 2 pieces by 4 times, can realize batch production, and effectively solve the problem that the prior art cannot cut continuously.
An ultra-thin ultra-precise cutting knife of metal bond is prepared by mixing a metal matrix body and abrasive materials; the metal matrix body consists of copper powder, tin powder, cobalt powder and silicon carbide; the mass percentage of the copper powder is 60-80%, the mass percentage of the tin powder is 10-30%, the mass percentage of the cobalt powder is 3-6%, and the balance is silicon carbide. Preferably, the mass percentage of the metal matrix body is 100%, the mass percentage of the copper powder is 65-75%, the mass percentage of the tin powder is 15-25%, the mass percentage of the cobalt powder is 3-5%, and the balance is silicon carbide.
In the invention, the abrasive is diamond with the grain diameter of 1200# to 800#.
The preparation method of the metal bond ultrathin superfinishing cutting knife comprises the following steps of mixing copper powder and tin powder, adding cobalt powder for mixing, adding silicon carbide for mixing, and finally adding an abrasive for mixing to obtain a material; then the materials are sintered after cold pressing to obtain a blank; and processing the blank to obtain the metal bond ultrathin superfinishing cutting knife.
In the invention, copper powder and tin powder are mixed for 0.5 to 1.5 hours, then cobalt powder is added for 0.5 to 1.5 hours, then silicon carbide is added for 1.5 to 2.5 hours, and finally abrasive is added for 1.5 to 2.5 hours, thus obtaining materials; then the materials are mixed at the volume of 3.5 to 4.5 tons/cm 2 Cold pressing and maintaining the pressure for 3-8 seconds, and sintering to obtainTo a blank; the green body is processed conventionally to obtain the ultra-thin ultra-precise cutting knife with the thickness of 40-50 microns. Preferably, during sintering, the temperature rising rate is 40-55 ℃/min, the temperature rises to the final sintering temperature of 600-700 ℃, the temperature is kept for 10-20 minutes, and then the mixture is naturally cooled to the room temperature.
The invention adopts conventional raw materials, combines metal powder with silicon carbide to obtain the 45 mu m metal bond ultrathin superfinishing cutting knife, has the characteristics of ultrathin property, high rigidity and good self-sharpening property, replaces the existing ultrathin dicing knife which is used at present, has the beveling degree less than or equal to 1 DEG, can improve the service life of 2 slices which can only be cut into 0.5 slices, improves the efficiency by 4 times, and more importantly, can realize batch production and effectively solves the problem that the prior art cannot cut continuously.
Drawings
FIG. 1 is a physical diagram of a dicing blade according to an embodiment of the invention;
FIG. 2 is a cut edge view of a product according to an embodiment;
FIG. 3 is a graph of a prior art product cut edge;
FIG. 4 is a graph showing a cut edge of a comparative example;
FIG. 5 is a cut edge view of a second embodiment.
Detailed Description
The raw materials used in the invention are the existing products, and the copper powder is 325 meshes fine; the tin powder is 325 meshes fine; the cobalt powder is 300 meshes fine; particle size by sieving; silicon carbide W3.5; diamond with the grain diameter of 1000# to 900#; the specific preparation operation and the processing method are all in the prior art, and the mass fraction of the abrasive in the metal matrix body and the abrasive is 1.8-3%.
Example an ultra-thin ultra-fine cutting knife of 45 μm metal bond
The metal matrix body comprises the following components in percentage by mass:
70% copper powder
Tin powder 20%
Cobalt powder 4%
Silicon carbide 6%
(1) Mixing materials: according to the formula requirement, accurately weighed copper powder and tin powder are mixed for 1 hour in a conventional mixing tank, then cobalt powder is added and mixed for 1 hour, then silicon carbide is added and put into the mixing tank, premixing is carried out for 2 hours, and finally diamond is added and mixed for 2 hours, so that a uniformly mixed material is obtained; 975g of metal matrix and 25g of diamond;
(2) And (5) press forming: putting the uniformly mixed materials in the step (1) into a die, scraping the materials by a scraper, placing the materials on a pressing platform of a grinding wheel hydraulic press, and applying pressure of 4 tons/cm at room temperature 2 Maintaining the pressure for 5 seconds, thereby preparing a cold-pressed blank;
(3) Sintering and forming: placing the blank body after cold pressing in the step (2) and a die into a sintering furnace together, heating up to a final sintering temperature of 650 ℃ at a heating rate of 50 ℃/min, preserving heat for 15 minutes, cooling to the room temperature along with the furnace, taking out, and removing burrs for later use;
(4) Inner hole and excircle processing: cutting the sintered blank by a wire to the dimensional accuracy required by the drawing;
(5) Thinning the double end faces: and placing the blank body subjected to the inner and outer circle processing in a double-end-face thinning machine, fixing a fixture, and processing to the required dimensional accuracy of the drawing to obtain a 51.8mm (O.D) X0.045mm (T) X40mm (I.D) dicing cutter.
The step (4) and the step (5) are conventional techniques.
And (3) processing and testing: spindle rotational speed: 35000rpm, feed rate: the UV film was cut to a depth of 0.08mm at 8mm/s, the cut object was CSP glass, and the UV film was adhered to the lower side. The comparative example is the existing commercial label-alignment dicing blade which is used for cutting CSP glass and is a product with good performance in the current market.
As the processing results show, the first embodiment has obvious technical progress, mainly shows that the processing quantity and the processing quality can cut approximately 2.5 pieces of workpieces, so that in actual production, 2 pieces of cutters are cut to be beneficial to the consistency of the production quality, more importantly, the customer requires the broken edge to be smaller than 20 μm, preferably smaller than 15 μm, and referring to fig. 2, the first embodiment has small broken edge when cutting, and has good competitiveness compared with 18 μm of the comparison example, because the customer has successively lifted the broken edge to be smaller than 15 μm.
Comparative example one
The metal matrix body comprises the following components in percentage by mass:
66% copper powder
18% of tin powder
Cobalt powder 10%
Silicon carbide 6%
The cutting knife obtained according to the method of example one was subjected to the same processing test, and the edge breakage was excessive, as shown in fig. 4, indicating that the hardness of the binder increased after the cobalt powder was added in a higher amount, which was not beneficial to the processing of the workpiece.
Comparative example two
Based on the first embodiment, 5% of copper powder is replaced by nickel powder, and a cutting knife is obtained according to the method of the first embodiment, and the same processing test is carried out, so that only 1 piece of copper powder can be cut, and the nickel powder has high toughness, wear resistance and impact resistance, but the processing effect is poor.
Based on the first embodiment, 6% of copper powder was replaced with graphite powder, and a cutter was obtained in the same manner as in the first embodiment, and the same processing test was performed to cut only 1.2 pieces.
On the basis of the first embodiment, silicon carbide is omitted, and the rest is unchanged, so that the obtained cutting knife cannot use the serpentine shape in the cutting process.
Based on the first embodiment, silicon carbide was replaced with alumina, and a cutter was obtained in the same manner as in the first embodiment, and the same processing test was performed, so that only 0.8 pieces could be cut.
Example two ultra-thin super-fine cutting knife of 45 μm metal binder
The metal matrix body comprises the following components in percentage by mass:
copper powder 65%
Tin powder 25%
Cobalt powder 5%
Silicon carbide 5%
(1) Mixing materials: according to the formula requirement, accurately weighed copper powder and tin powder are mixed in a conventional mixing tank for 1 hour, then cobalt powder is added and mixed for 1 hour, then silicon carbide is added and put into the mixing tank for premixing for 2 hours, finally diamond is added and mixed for 2 hours, so that a uniformly mixed material is obtained, wherein the metal matrix is 978g, and the diamond is 22g;
(2) And (5) press forming: putting the uniformly mixed materials in the step (1) into a die, scraping the materials by a scraper, placing the materials on a pressing platform of a grinding wheel hydraulic press, and applying pressure of 4 tons/cm at room temperature 2 Maintaining the pressure for 3 seconds, thereby preparing a cold-pressed blank;
(3) Sintering and forming: placing the blank body after cold pressing in the step (2) and a die into a sintering furnace together, heating to a final sintering temperature of 700 ℃ at a heating rate of 45 ℃/min, preserving heat for 20 minutes, cooling to the room temperature along with the furnace, taking out, and removing burrs for later use;
(4) Inner hole and excircle processing: cutting the sintered blank by a wire to the dimensional accuracy required by the drawing;
(5) Thinning the double end faces: and placing the blank body subjected to the inner and outer circle processing in a double-end-face thinning machine, fixing a fixture, and processing to the required dimensional accuracy of the drawing to obtain a 51.8mm (O.D) X0.045mm (T) X40mm (I.D) dicing cutter.
The steps (4) and (5) are conventional techniques, and the obtained product is processed in the same way as the embodiment, so that 2 pieces can be cut, and the quality is good, as shown in figure 5.
The dicing cutter prepared by the method has the characteristics of ultra-thin, high rigidity and good self-sharpening property, replaces the existing ultra-thin dicing cutter used at present, has the beveling degree less than or equal to 1 degree, has the service life of improving the existing commercial product to 2 pieces by only cutting 0.5 piece, improves the product by 4 times, and can realize mass production.
Claims (8)
1. An ultra-thin ultra-precise cutting knife of metal bond is prepared by mixing a metal matrix body and abrasive materials; the metal matrix is characterized by comprising copper powder, tin powder, cobalt powder and silicon carbide; taking the mass of the metal matrix body as 100%, the mass percentage of copper powder as 60-80%, the mass percentage of tin powder as 10-30%, the mass percentage of cobalt powder as 3-6% and the balance of silicon carbide; the abrasive is diamond with the particle size of 1200# to 800#; the preparation method of the ultra-thin ultra-precise cutting knife with the metal binding agent comprises the steps of mixing copper powder and tin powder, adding cobalt powder for mixing, adding silicon carbide for mixing, and finally adding an abrasive for mixing to obtain a material; then the materials are sintered after cold pressing to obtain a blank; and processing the blank to obtain the metal bond ultrathin superfinishing cutting knife.
2. The ultra-thin ultra-precise cutting knife of the metal bonding agent according to claim 1, wherein the mass of the metal matrix body is 100%, the mass percentage of copper powder is 65-75%, the mass percentage of tin powder is 15-25%, the mass percentage of cobalt powder is 3-5%, and the balance is silicon carbide.
3. The method for preparing the ultra-thin ultra-precise cutting knife of the metal bonding agent is characterized by comprising the following steps of mixing copper powder and tin powder, then adding cobalt powder for mixing, then adding silicon carbide for mixing, and finally adding an abrasive for mixing to obtain a material; then the materials are sintered after cold pressing to obtain a blank; and processing the blank to obtain the metal bond ultrathin superfinishing cutting knife.
4. The method for preparing the ultra-thin ultra-precise cutting knife of the metal bonding agent according to claim 3, wherein the mass of the metal matrix body is 100%, the mass percentage of copper powder is 65-75%, the mass percentage of tin powder is 15-25%, the mass percentage of cobalt powder is 3-5%, and the balance is silicon carbide.
5. The method for preparing the ultra-thin ultra-precise cutting knife of the metal bonding agent according to claim 3, wherein the copper powder and the tin powder are mixed for 0.5 to 1.5 hours, then the cobalt powder is added for 0.5 to 1.5 hours, then the silicon carbide is added for 1.5 to 2.5 hours, and finally the abrasive is added for 1.5 to 2.5 hours, so that the material is obtained; then the materials are mixed at the volume of 3.5 to 4.5 tons/cm 2 Cold pressing and maintaining the pressure for 3-8 seconds, and then sintering to obtain a blank; and conventionally processing the blank to obtain the metal bond ultrathin superfinishing cutting knife.
6. The method for preparing the ultra-thin ultra-precise cutting blade with the metal binding agent according to claim 3, wherein the thickness of the cutting blade is 40-50 microns.
7. The use of the ultra-thin ultra-fine cutter of metal bond of claim 1 in processing CSP glass.
8. The use according to claim 7, wherein the processed product has a friable edge of less than 15 μm.
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| CN2021116310525 | 2021-12-28 | ||
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