WO1999044776A1 - Outil a diamant fritte et son procede de production - Google Patents
Outil a diamant fritte et son procede de production Download PDFInfo
- Publication number
- WO1999044776A1 WO1999044776A1 PCT/JP1999/000973 JP9900973W WO9944776A1 WO 1999044776 A1 WO1999044776 A1 WO 1999044776A1 JP 9900973 W JP9900973 W JP 9900973W WO 9944776 A1 WO9944776 A1 WO 9944776A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diamond sintered
- sintered body
- tool
- group metal
- iron group
- Prior art date
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 311
- 239000010432 diamond Substances 0.000 title claims abstract description 311
- 238000004519 manufacturing process Methods 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 138
- 239000002184 metal Substances 0.000 claims abstract description 138
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 130
- 239000002344 surface layer Substances 0.000 claims abstract description 87
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 37
- 239000010703 silicon Substances 0.000 claims abstract description 37
- 239000006104 solid solution Substances 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 54
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 41
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 41
- 239000000243 solution Substances 0.000 claims description 38
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 35
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 33
- 239000002253 acid Substances 0.000 claims description 33
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 30
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 24
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims description 14
- 238000004381 surface treatment Methods 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 49
- 238000005520 cutting process Methods 0.000 description 46
- 239000002245 particle Substances 0.000 description 25
- 229910000838 Al alloy Inorganic materials 0.000 description 21
- 229910052782 aluminium Inorganic materials 0.000 description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 16
- 230000003746 surface roughness Effects 0.000 description 11
- -1 iron group metals Chemical class 0.000 description 10
- 239000010941 cobalt Substances 0.000 description 7
- 229910017052 cobalt Inorganic materials 0.000 description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002173 cutting fluid Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000007733 ion plating Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- 239000011863 silicon-based powder Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- HRRDCWDFRIJIQZ-UHFFFAOYSA-N naphthalene-1,8-dicarboxylic acid Chemical compound C1=CC(C(O)=O)=C2C(C(=O)O)=CC=CC2=C1 HRRDCWDFRIJIQZ-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/495—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as oligomers or polymers
- C04B41/4961—Polyorganosiloxanes, i.e. polymers with a Si-O-Si-O-chain; "silicones"
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5057—Carbides
- C04B41/5059—Silicon carbide
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5062—Borides, Nitrides or Silicides
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- C04B41/5093—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with elements other than metals or carbon
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- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/91—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2204/00—End product comprising different layers, coatings or parts of cermet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/31678—Of metal
Definitions
- the present invention relates to a diamond sintered body tool and a method for manufacturing the same, and more particularly, to a diamond sintered body tool excellent in welding resistance, fracture resistance and strength, and a method for manufacturing the same.
- diamond sintered bodies are widely used as tool materials in fields where strength and wear resistance are required, such as cutting tools, drilling tools, and drawing die tools.
- a diamond sintered body is filled with a tungsten carbide cobalt cemented carbide container and filled with diamond powder at a high temperature.
- Those sintered under high pressure are known.
- Japanese Patent Publication No. 541-114513 discloses that diamond powder and iron group metal powder are mixed in advance, and the diamond powder obtained by maintaining the mixed powder under high temperature and high pressure. The body is described.
- These diamond sintered bodies contain an iron group metal such as cobalt as a sintering aid between sintered diamond particles.
- Japanese Patent Application Laid-Open No. Sho 53-111489 discloses a diamond sintered body in which the iron group metal is removed from the entire sintered body. It is described in Japanese Patent Publication No. 156003.
- this invention is made in order to solve the above-mentioned problems, and can suppress welding of a soft metal, such as an aluminum alloy, and is a diamond sintered compact tool excellent in strength and fracture resistance.
- the purpose is to provide. Disclosure of the invention
- the present inventors investigated the welding of a work material on the surface of a diamond sintered tool in cutting of an aluminum alloy. As a result, a surface layer containing at least one selected from the group consisting of silicon, silicon oxide, silicon carbide, silicon nitride and a solid solution thereof is formed on the surface of the diamond sintered compact tool, and thereby the work material can be formed.
- the present inventors have found that a remarkable effect appears in the prevention of welding, and have reached the present invention.
- the diamond sintered body which is the tool base material
- Adhesion of aluminum which is the work material
- the bond between the diamond and aluminum on the surface of the diamond sintered body is relatively strong.
- silicon (S i), silicon oxide (S i O 2 ), silicon carbide (S i C), silicon nitride (S i 3 N 4 ) and silicon (S i) By forming a surface layer containing at least one selected from the group consisting of a solid solution and one of these solid solutions, each of these surface layers has a weak bond with aluminum, so that the tightly bound diamond-aluminum contact is prevented. The welding of aluminum on the tool rake face or tool flank can be prevented.
- the formation of the surface layer is generally performed as follows.
- the surface layer is made of silicon, for example, a silicon powder having a particle size of 0.1 / m or more and 20 ⁇ or less is pressed against the tool surface to form a thin silicon adsorption layer on the surface.
- the surface layer is Silicon oxide, if formed of silicon carbide and Z or silicon nitride, for example, by a plasma CVD (Chemical Vapor Deposition) method, optionally selected from S i H 4, O 2, N 2, C 2 H 4
- the surface layer is formed at a temperature of 400 ° C. to 500 ° C. using the raw material gas described above.
- the surface layer can be formed by a vacuum evaporation method, a sputtering method, an ion plating method, or the like using the same source gas.
- the thickness of the surface layer formed on the diamond sintered body needs to be at least 0.1 nm or more.
- the thickness of the surface layer formed on the diamond sintered body is preferably in the range of 0.1 nm to 1 ⁇ m.
- iron group metals such as Fe, Co, and Ni are used as a sintering aid in the diamond sintered body
- metal tends to be a starting point of welding generated on the tool edge.
- wettable generally refers to the strength of contact between a solid and a liquid. In this specification, it refers to the strength of close contact between a tool and a work material. Therefore, “poor wettability” means that when the tool comes into contact with the work material, they do not adhere. “Good wettability” means that when a tool and a work material come into contact with each other, they are likely to adhere to each other.
- the iron group metal contained in the diamond sintered body is removed from the surface in advance, and then the surface layer is formed, so that the diamond sintered body can be welded even when the surface of the diamond sintered body is partially exposed by long-time cutting. Has the effect of preventing.
- a tool is manufactured using a diamond sintered body containing an iron group metal, and then the tool is immersed in an acid solution to remove the iron group metal from the diamond sintered body surface. Then, forming a surface layer containing at least one selected from silicon, silicon oxide, silicon carbide, silicon nitride and a solid solution thereof on the tool rake face or tool flank of the diamond sintered tool. Thereby, the welding resistance to long-time cutting can be improved.
- the iron group metal is removed from the surface of the diamond sintered body by immersing the diamond sintered body containing the iron group metal in the acid solution. Then, a tool is formed using the diamond sintered body.
- a surface layer containing at least one selected from the group consisting of silicon, silicon oxide, silicon carbide, silicon nitride and a solid solution thereof on the tool rake face or tool flank of the tool By forming a surface layer containing at least one selected from the group consisting of silicon, silicon oxide, silicon carbide, silicon nitride and a solid solution thereof on the tool rake face or tool flank of the tool, The welding resistance to long-time cutting can be improved.
- the iron group metal is removed from the surface of the diamond sintered body by immersing the diamond sintered body containing the iron group metal in the acid solution. Thereafter, a surface layer containing at least one selected from the group consisting of silicon, silicon oxide, silicon carbide, silicon nitride and a solid solution thereof is formed on the surface of the diamond sintered body.
- the diamond sintered body from which the iron group metal has been removed from the surface has the inside containing the iron group metal at the first content rate and the second inside area surrounding the inside and having a lower content than the first content rate. And a surface portion containing an iron group metal at a content rate.
- the iron group metal when the iron group metal was removed from the entire sintered body, there was a problem that voids were present in the diamond sintered body, the strength was low, and tool breakage occurred.
- the strength of the sintered body is not reduced, so that tool breakage does not occur. Therefore, it is effective in improving the welding resistance.
- the second content of the iron group metal needs to be 2.0% by weight or less. Further, when the thickness of the sintered portion having the second content is 2 nrn or less, the effect of improving the welding resistance by removing the iron group metal from the surface of the diamond sintered body is unlikely to appear.
- the range of the surface portion of the second content is preferably 2 nm or more and 500 O nm or less from the surface of the diamond sintered body.
- the particle size of the sintered body is 0.1 m or more and 60 ⁇ m or less, and the content of the sintered diamond particles in the diamond sintered body is 80% or more and 96% or less.
- the present inventors have conducted various investigations on the welding of a work material on the surface of a diamond sintered tool in the cutting of an aluminum alloy, and as a result, the welding of the work material has been performed within the diamond sintered tool. It originated from the iron group metals (iron, cobalt, nickel) contained in steel.
- iron group metals used as sintering aids in the diamond sintered body have good wettability with aluminum as a work material, so that aluminum First adhere to the iron group metal on the surface of the tool. Later, it was discovered that aluminum welding spread over the entire surface of the diamond sintered tool.
- the welding resistance of the diamond sintered body tool is greatly improved by removing the iron group metal present on the surface of the diamond sintered body tool.
- the iron group metal is removed only from the surface portion of the diamond sintered body tool, thereby preventing the occurrence of a decrease in strength, a loss, and the like.
- the diamond sintered body tool of the present invention made on the basis of such knowledge includes a tool base including a diamond sintered body, and silicon, silicon oxide, silicon carbide, silicon formed on the surface of the tool base.
- the silicon Sani ⁇ is S i 0 2.
- the silicon carbide is preferably SiC.
- the silicon nitride is Si 3 N 4 .
- the thickness of the surface layer is preferably from 0.1 nm to 1 zm.
- a diamond sintered body tool includes: a tool base including a diamond sintered body; and silicon, silicon oxide, silicon carbide, silicon nitride, and silicon nitride formed on the surface of the tool base. And a surface layer containing at least one selected from the group consisting of these solid solutions.
- the tool base has an interior containing the iron group metal at a first content, and a surface surrounding the interior and containing the iron group metal at a second content lower than the first content.
- silicon oxide is S I_ ⁇ 2.
- the silicon carbide is preferably SiC.
- the silicon nitride is Si 3 N 4 .
- the thickness of the surface layer is preferably from 0.1 nm to 1 ⁇ . Further, the second content is preferably 0.2% by weight or less.
- a portion having a depth from the diamond sintered body surface of not less than 2 nm and not more than 500 nm is the surface portion.
- Le is preferably diamond sintered body tool which is brazed to the tool substrate, 0
- a diamond sintered compact tool includes an interior containing an iron group metal at a first content, and a second interior surrounding the interior and having a lower content than the first content. A surface portion containing an iron group metal at a specific rate.
- the second content is preferably 2.0% by weight or less.
- a portion having a depth from the surface of the diamond sintered body tool of 2 nm or more and 500 nm or less is a surface portion.
- a sintered body having a relatively low diamond content of 96% by volume or less of sintered diamond particles or a sintered body having a diameter of 60 ⁇ m or less of sintered diamond particles aluminum welding is particularly difficult. Likely to happen.
- the minimum value of the diameter of sintered diamond particles that can be actually produced is 0.1 ⁇ m, and the diamond content in that case is 80% by volume, so that the effect of the present invention is the most. The most prominent is the force in which the diameter of the diamond particles is in the range of 0.1 ⁇ to 60 ⁇ , or the content of sintered diamond particles is 80% to 96% by volume. This is a diamond sintered body tool.
- the diamond sintered tool is preferably brazed to the tool base material.
- At least one of a tool rake face and a tool flank is formed on the surface portion.
- the welding of a work material made of such an aluminum alloy is greatly affected by cutting conditions.
- the cutting speed is 20 OmZmin or less, welding is likely to occur on the surface of the diamond sintered compact tool. Therefore, in the case of a drilling tool for which it is difficult to increase the cutting speed, such as a reamer tool, an end mill tool, a drill tool, and a polling tool, the use of the present invention has a remarkable effect on the welding resistance.
- a method of manufacturing a diamond sintered compact tool according to one aspect of the present invention includes the following steps.
- a step of preparing a diamond sintered body (1) A step of preparing a diamond sintered body.
- a method of manufacturing a diamond sintered compact tool according to another aspect of the present invention includes the following steps.
- the acid solution preferably contains at least one selected from the group consisting of nitric acid, hydrofluoric acid and hydrochloric acid.
- the content of the iron group metal on the surface is preferably 2.0% by weight or less.
- a method for manufacturing a diamond sintered compact tool according to still another aspect of the present invention includes the following steps.
- a step of preparing a diamond sintered body containing an iron group metal (1) A step of preparing a diamond sintered body containing an iron group metal.
- the iron group metal is removed from the surface of the diamond sintered body to make the content of the iron group metal on the surface of the diamond sintered body smaller than that of the inside. Subjecting the diamond sintered body to a surface treatment.
- a method for manufacturing a diamond sintered compact tool according to another aspect of the present invention includes the following steps.
- a step of preparing a diamond sintered body containing an iron group metal (1) A step of preparing a diamond sintered body containing an iron group metal.
- the acid solution preferably contains at least one selected from the group consisting of nitric acid, hydrochloric acid and hydrofluoric acid.
- the content of the iron group metal on the surface is preferably 2.0% by weight or less.
- a method of manufacturing a diamond sintered compact tool according to still another aspect of the present invention includes the following steps.
- a step of preparing a diamond sintered body containing an iron group metal (1) A step of preparing a diamond sintered body containing an iron group metal.
- the acid solution preferably contains at least one selected from the group consisting of nitric acid, hydrochloric acid and hydrofluoric acid.
- the content of the iron group metal on the surface is preferably 2.0% by weight or less.
- a method for manufacturing a diamond sintered compact tool according to still another aspect of the present invention includes the following steps.
- a step of preparing a diamond sintered body containing an iron group metal (1) A step of preparing a diamond sintered body containing an iron group metal.
- the acid solution preferably contains at least one selected from the group consisting of nitric acid, hydrochloric acid and hydrofluoric acid.
- the content of the iron group metal on the surface is preferably 2.0% by weight or less.
- a method of manufacturing a diamond sintered compact tool according to still another aspect of the present invention includes the following steps.
- a step of preparing a diamond sintered body (1) A step of preparing a diamond sintered body.
- FIG. 1 is a schematic sectional view of a diamond sintered compact tool according to one aspect of the present invention.
- FIG. 2 is a schematic sectional view of a diamond sintered compact tool according to another aspect of the present invention.
- FIG. 3 is a schematic sectional view of a diamond sintered compact tool according to still another aspect of the present invention.
- FIG. 1 is a schematic sectional view of a diamond sintered compact tool according to one aspect of the present invention.
- a diamond sintered body tool 10 includes a tool base 12 containing a diamond sintered body and a surface layer 11 formed on the surface of the tool base 12.
- Surface layer 1 1 is made of silicon, silicon oxide, silicon carbide, silicon nitride And at least one of these solid solutions.
- FIG. 2 is a schematic cross-sectional view of a diamond sintered compact tool according to another aspect of the present invention.
- a diamond sintered body tool 20 is provided with a tool base 22 containing a diamond sintered body, and a surface layer 21 formed on the surface of the tool base 22.
- Surface layer 21 contains at least one of silicon, silicon oxide, silicon carbide, silicon nitride, and a solid solution thereof.
- the tool base material 22 has an interior 22 b containing the iron group metal at the first content, and a surface surrounding the interior 22 and containing the iron group metal at the second content lower than the first content. Part 2 2b.
- FIG. 3 is a schematic sectional view of a diamond sintered compact tool according to still another aspect of the present invention.
- sintered diamond tool 30 has an inner portion 32b containing iron group metal at the first content rate and an inner portion 32b that is lower than the first content rate.
- a tool base material 32 having a surface portion 32 a containing a second content of an iron group metal and having a diamond sintered body.
- diamond particles having a diameter in the range of 0.1 to 4 // m were prepared.
- a sintering aid consisting of particles of iron group metals (cobalt, iron and nickel) was also prepared.
- the diamond particles and the iron group metal were mixed by a ball mill so that the content of the diamond was 90% by volume to form a mixed powder.
- This mixed powder is heat-treated in a vacuum at 800 ° C. for 1 hour, and then filled in a cemented carbide capsule and subjected to a pressure of 50,000 atmospheres and a temperature of 140 ° C. for 1 hour. It was kept and sintered.
- a sintered diamond having a sintered diamond sintered particle diameter of 0.1 to 4 ⁇ and an iron group metal content of 15% by weight was obtained.
- Aluminum alloy JIS name A6061, T6 treated material
- diamond particles having the particle diameters shown in Table 3 were prepared. These diamond particles were mixed with an iron group metal, and heat-treated and sintered in the same manner as in Example 1 to obtain diamond sintered bodies (samples N 0.1 to 18). When the diameter of the sintered diamond particles was measured for each sample, the diameter of the sintered diamond particles was equal to the diameter of the diamond particles before sintering. The diamond content and the iron group metal content were also measured. The results are shown in Table 3.
- sample Nos. 11 to 14 were immersed in a 60% by weight hydrochloric acid solution to remove iron group metals from the surface portion of the diamond sintered body.
- the depth of the portion where the iron group metal content was 2.0% by weight or less was measured. The results are shown in Table 4.
- sample No.:! The diamond sintered bodies indicated by Nos. To 18 were machined into the shape of a drill bit. At this time, in Sample Nos. 1 to 14, the content of iron group metal was 2.0% by weight at the part where the depth from the flank face was 25 nm. It was as follows. The cutting edge of this drill was brazed to a cemented carbide drill tool base material to produce a drill tool. Drilling was performed using this drill tool under the following conditions.
- Table 6 shows various examples of sintered diamond tools prepared mainly to examine the effect of surface composition on the welding resistance of sintered diamond tools. That is, in each of the tools in Table 6, a diamond sintered body having a particle diameter in the range from 0.1 ⁇ 1 to 4111 is used as a tool base. Surface layers of various compositions are formed on the scoop, flank and flank of the diamond sintered tool.
- Sample Nos. 21 to 26 were first fabricated into throw-away tips of a desired shape having cutting edges made of sintered diamond.
- Sample No. 21 was prepared by applying silicone grease to the tool rake face and flank face of the diamond sintered body to change the molecular structure of the siloxane bond (1-Si-OSi-0-) shown in Table 6 to the skeleton.
- the silicone layer was formed to the thickness shown in Table 6.
- a silicon layer having a thickness shown in Table 6 was formed by pressing silicon powder onto the tool rake face and tool flank face of the diamond sintered body.
- Tool Sample N 0. 23 to 25 is by a plasma CVD method using a gas selected from S iH ⁇ ⁇ 2, N 2, C 2 H 4 , respectively, to the temperature 400 ° C or higher 500 ° C following synthesis temperature
- a surface layer having the composition shown in Table 6 was formed.
- Aluminum alloy JIS name A6061, T6 treated material
- Table 8 shows examples of various diamond tools mainly prepared for examining the effect of the thickness of the surface layer on the welding resistance of the diamond sintered tool. That is, in each of the tools in Table 8, a diamond sintered body having a particle size in the range of 4 ⁇ to 1 ⁇ is used as a tool base material. Surface layers of various thicknesses are formed on the rake face of the diamond sintered tool.
- a SiO 2 layer having a thickness shown in Table 8 was formed on the surface of the wrapped diamond sintered body by an ion plating method. Thereafter, the sintered body was brazed to a reamer shank made of cemented carbide to produce a diamond sintered body reamer tool having a desired shape. For comparison, a diamond sintered tool having no surface layer was used, and a tool was manufactured in the same manner as that used to manufacture samples Nos. 31 to 34. Obtained. The cutting resistance of each tool was evaluated by cutting using these tools under the following conditions.
- the tool shown in sample N 0.34 with a thick surface layer has a thick surface layer.
- the roughness of the tool rake surface deteriorated as shown in Table 9, and this resulted in slight welding of the aluminum alloy.
- the finished surface roughness was within the range without any problem, but it was recognized that it slightly deteriorated.
- Table 10 shows that the depth of the part where the iron group metal was removed before forming the surface layer affects the welding resistance of the diamond sintered tool in the case of a diamond sintered tool using iron group metal as a sintering aid.
- Various sintered diamond tools prepared to study the effects are shown.
- all of the tools in Table 10 have particles having a particle size in the range of 2 ⁇ to 8 ⁇ , and a diamond sintered body containing cobalt as a main sintering aid is a tool base. It is used as a material.
- the depth of the portion with iron group metal content of 2.0% by weight or less is formed at various depths. Have been.
- the tools shown in Samples 41 to 43 have the desired reaming tool shape with two cutting edges.
- Cobalt was dissolved and extracted from the flank.
- sample No. 44 a tool in which the surface layer was formed on the surface of the diamond sintered body without being immersed in the acid solution, which is the same manufacturing method as sample Nos. 41 to 43, and acid solution Sample No. 45, which was a tool that was neither immersed in nor a surface layer, was produced. Reaming was carried out using these tools under the following cutting conditions, and the welding was evaluated.
- Aluminum alloy JIS name A6061, T6 treated material
- Table 12 shows examples of various drill tools prepared to examine the effect of the content of the iron group metal in the diamond sintered body that has been subjected to the acid treatment on the welding.
- the respective diamond sintered body tool bases were first immersed in a hydrochloric acid solution to dissolve and extract the iron group metal.
- the content of the iron group metal on the surface of the diamond sintered body was adjusted to the content shown in Table 12 by changing the concentration of hydrochloric acid.
- each tool base was brazed to the cemented carbide drill tool base material to form the cutting edge shape. Thereafter, a surface layer made of SiC having a thickness of 3 nm was formed on the tool rake face and the tool flank of the diamond sintered body drill in the same manner as in Example 3.
- a drill tool shown in Sample No. 54 was prepared.
- This sample No. 54 is manufactured in the same manner as sample Nos. 51 to 53, but the tool is manufactured without immersing each of the diamond tool base materials in the acid solution.
- a surface layer made of SiC with a thickness of 3 nm is formed on the tool flank.
- the drill tool shown in Sample No. 55 was formed without being immersed in the acid solution and without forming a surface layer.
- a surface layer is formed on the surface of the diamond sintered compact base material after an acid treatment is applied to the diamond sintered compact tool base material, followed by brazing. It was confirmed that the same effect was exhibited when a tool was manufactured by cutting.
- the diamond sintered compact tool according to the present invention is useful in fields where strength and wear resistance are required, such as cutting tools, excavating tools, and drawing die tools.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2321638 CA2321638A1 (en) | 1998-03-02 | 1999-02-26 | Diamond sintered body tool and manufacturing method thereof |
US09/623,276 US6528159B1 (en) | 1998-03-02 | 1999-02-26 | Sintered diamond tool and method for manufacturing the same |
EP99906536A EP1070562A4 (en) | 1998-03-02 | 1999-02-26 | SINTERED DIAMOND TOOL AND METHOD FOR THE PRODUCTION THEREOF |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/49301 | 1998-03-02 | ||
JP04930198A JP3974993B2 (ja) | 1998-03-02 | 1998-03-02 | ダイヤモンド焼結体工具およびその製造方法 |
JP25677798A JP2000087112A (ja) | 1998-09-10 | 1998-09-10 | 耐溶着性に優れるダイヤモンド焼結体工具とその製造方法 |
JP10/256777 | 1998-09-10 |
Publications (1)
Publication Number | Publication Date |
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WO1999044776A1 true WO1999044776A1 (fr) | 1999-09-10 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/000973 WO1999044776A1 (fr) | 1998-03-02 | 1999-02-26 | Outil a diamant fritte et son procede de production |
Country Status (4)
Country | Link |
---|---|
US (1) | US6528159B1 (ja) |
EP (1) | EP1070562A4 (ja) |
CA (1) | CA2321638A1 (ja) |
WO (1) | WO1999044776A1 (ja) |
Cited By (1)
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CN109986082A (zh) * | 2017-12-29 | 2019-07-09 | 江苏友和工具有限公司 | 一种铁剂基体和结合剂的金刚石工具的制备方法 |
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US7681669B2 (en) | 2005-01-17 | 2010-03-23 | Us Synthetic Corporation | Polycrystalline diamond insert, drill bit including same, and method of operation |
US7972395B1 (en) | 2009-04-06 | 2011-07-05 | Us Synthetic Corporation | Superabrasive articles and methods for removing interstitial materials from superabrasive materials |
US8951317B1 (en) | 2009-04-27 | 2015-02-10 | Us Synthetic Corporation | Superabrasive elements including ceramic coatings and methods of leaching catalysts from superabrasive elements |
US9352447B2 (en) * | 2009-09-08 | 2016-05-31 | Us Synthetic Corporation | Superabrasive elements and methods for processing and manufacturing the same using protective layers |
US9144886B1 (en) | 2011-08-15 | 2015-09-29 | Us Synthetic Corporation | Protective leaching cups, leaching trays, and methods for processing superabrasive elements using protective leaching cups and leaching trays |
US9194189B2 (en) | 2011-09-19 | 2015-11-24 | Baker Hughes Incorporated | Methods of forming a cutting element for an earth-boring tool, a related cutting element, and an earth-boring tool including such a cutting element |
US9550276B1 (en) | 2013-06-18 | 2017-01-24 | Us Synthetic Corporation | Leaching assemblies, systems, and methods for processing superabrasive elements |
US9789587B1 (en) | 2013-12-16 | 2017-10-17 | Us Synthetic Corporation | Leaching assemblies, systems, and methods for processing superabrasive elements |
US10807913B1 (en) | 2014-02-11 | 2020-10-20 | Us Synthetic Corporation | Leached superabrasive elements and leaching systems methods and assemblies for processing superabrasive elements |
US9908215B1 (en) | 2014-08-12 | 2018-03-06 | Us Synthetic Corporation | Systems, methods and assemblies for processing superabrasive materials |
US11766761B1 (en) | 2014-10-10 | 2023-09-26 | Us Synthetic Corporation | Group II metal salts in electrolytic leaching of superabrasive materials |
US10011000B1 (en) | 2014-10-10 | 2018-07-03 | Us Synthetic Corporation | Leached superabrasive elements and systems, methods and assemblies for processing superabrasive materials |
US10723626B1 (en) | 2015-05-31 | 2020-07-28 | Us Synthetic Corporation | Leached superabrasive elements and systems, methods and assemblies for processing superabrasive materials |
US10900291B2 (en) | 2017-09-18 | 2021-01-26 | Us Synthetic Corporation | Polycrystalline diamond elements and systems and methods for fabricating the same |
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- 1999-02-26 CA CA 2321638 patent/CA2321638A1/en not_active Abandoned
- 1999-02-26 WO PCT/JP1999/000973 patent/WO1999044776A1/ja not_active Application Discontinuation
- 1999-02-26 US US09/623,276 patent/US6528159B1/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
EP1070562A4 (en) | 2004-11-24 |
US6528159B1 (en) | 2003-03-04 |
EP1070562A1 (en) | 2001-01-24 |
CA2321638A1 (en) | 1999-09-10 |
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