JPWO2009133814A1 - 表面被覆切削工具 - Google Patents
表面被覆切削工具 Download PDFInfo
- Publication number
- JPWO2009133814A1 JPWO2009133814A1 JP2009546601A JP2009546601A JPWO2009133814A1 JP WO2009133814 A1 JPWO2009133814 A1 JP WO2009133814A1 JP 2009546601 A JP2009546601 A JP 2009546601A JP 2009546601 A JP2009546601 A JP 2009546601A JP WO2009133814 A1 JPWO2009133814 A1 JP WO2009133814A1
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- Prior art keywords
- coating layer
- region
- coated cutting
- residual stress
- cutting tool
- Prior art date
- 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
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- 238000005520 cutting process Methods 0.000 title claims abstract description 133
- 239000011247 coating layer Substances 0.000 claims abstract description 201
- 239000000758 substrate Substances 0.000 claims abstract description 78
- 239000010410 layer Substances 0.000 claims abstract description 64
- 238000005240 physical vapour deposition Methods 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 91
- 239000013078 crystal Substances 0.000 claims description 64
- 238000007514 turning Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- 150000004767 nitrides Chemical class 0.000 claims description 10
- 239000000470 constituent Substances 0.000 claims description 4
- -1 carbonitride Chemical class 0.000 claims description 3
- 230000035882 stress Effects 0.000 description 156
- 230000000052 comparative effect Effects 0.000 description 33
- 239000010936 titanium Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 29
- 239000000203 mixture Substances 0.000 description 23
- 238000005229 chemical vapour deposition Methods 0.000 description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 18
- 238000011156 evaluation Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 13
- 238000009826 distribution Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 229910052786 argon Inorganic materials 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 238000007733 ion plating Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000012495 reaction gas Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000011195 cermet Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000009429 distress Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001883 metal evaporation Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
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- 229910001873 dinitrogen Inorganic materials 0.000 description 3
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- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
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- 230000005469 synchrotron radiation Effects 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- 229910010060 TiBN Inorganic materials 0.000 description 1
- 229910008482 TiSiN Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 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
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
- C23C14/325—Electric arc evaporation
-
- C—CHEMISTRY; METALLURGY
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0021—Reactive sputtering or evaporation
- C23C14/0036—Reactive sputtering
-
- C—CHEMISTRY; METALLURGY
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
-
- C—CHEMISTRY; METALLURGY
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
-
- C—CHEMISTRY; METALLURGY
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/048—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material with layers graded in composition or physical properties
-
- C—CHEMISTRY; METALLURGY
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/42—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by the composition of the alternating layers
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- C—CHEMISTRY; METALLURGY
- 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
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/30084—Milling with regulation of operation by templet, card, or other replaceable information supply
- Y10T409/302968—Milling with regulation of operation by templet, card, or other replaceable information supply including means for operation without manual intervention
- Y10T409/303024—Milling with regulation of operation by templet, card, or other replaceable information supply including means for operation without manual intervention including simultaneously usable plural tracers or including tracer adapted to simultaneously use plural templets
- Y10T409/30308—Milling with regulation of operation by templet, card, or other replaceable information supply including means for operation without manual intervention including simultaneously usable plural tracers or including tracer adapted to simultaneously use plural templets to make a double curvature foil
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
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- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
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- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
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- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
- Drilling Tools (AREA)
Abstract
Description
<表面被覆切削工具>
本発明の表面被覆切削工具は、基材と、該基材上に形成される被覆層とを備えるものである。このような構成を有する本発明の表面被覆切削工具は、たとえばドリル、エンドミル、フライス加工用または旋削加工用刃先交換型切削チップ、メタルソー、歯切工具、リーマ、タップ、またはクランクシャフトのピンミーリング加工用チップ等として極めて有用に用いることができる。
本発明の表面被覆切削工具の基材としては、このような切削工具の基材として知られる従来公知のものを特に限定なく使用することができる。たとえば、超硬合金(たとえばWC基超硬合金、WCの他、Coを含み、あるいはさらにTi、Ta、Nb等の炭窒化物等を添加したものも含む)、サーメット(TiC、TiN、TiCN等を主成分とするもの)、高速度鋼、セラミックス(炭化チタン、炭化硅素、窒化硅素、窒化アルミニウム、酸化アルミニウム、およびこれらの混合体など)、立方晶型窒化硼素焼結体、ダイヤモンド焼結体等をこのような基材の例として挙げることができる。
本発明の表面被覆切削工具において基材上に形成される被覆層は、10μm以上の厚みを有する物理蒸着層である。ここで、物理蒸着層とは、PVD(物理蒸着)法により形成される被膜をいう。本発明で用いられるPVD法としては、従来公知のPVD法を特に限定することなく用いることができる。このようなPVD法としては、たとえばスパッタリング法、アークイオンプレーティング法、蒸着法等を挙げることができる。特に、アークイオンプレーティング法またはマグネトロンスパッタリング法を採用することが好ましい。
本発明においては、被覆層の表面から1μmの厚みを有する領域(すなわち表面から1μmの深さまでの領域)を表面領域と呼ぶものとする。かかる表面領域は、積算残留応力が圧縮応力となる第1領域と積算残留応力が引張応力となる第2領域とを有することを要する。このような第1領域および第2領域は、表面領域を二分するようにしてそれぞれ1つずつの領域として含まれていてもよいし、それぞれ物理的に隔離した2以上の領域として含まれていてもよい。たとえば、後述の図1を例にとると、被覆層の表面からZ1までの領域とZ2〜厚み1μmまでの領域の2領域(すなわち積算残留応力が0GPa未満の領域)がここでいう第1領域であり、Z1〜Z2までの領域(すなわち積算残留応力が0GPa以上の領域)がここでいう第2領域となる。なお、図1の詳細は後述する。これに対して、図2は従来の表面被覆切削工具(基材上に物理蒸着層を形成したもの)の被覆層の表面領域の積算残留応力の一例をグラフ化したものであるが、表面領域の全領域に亘って積算残留応力が圧縮応力となっており、本発明の被覆層の表面領域を示す図1と対照的である。
本発明の表面被覆切削工具の基材上に形成される被覆層は、1以上の層を含むものである。すなわち、当該被覆層は、単一組成の1層のみから構成されていてもよいし、互いに組成の異なる2以上の層によって構成されていてもよい。当該被覆層が2以上の層によって構成される場合は、上記で説明した表面領域とそれ以外の領域との界面において層の組成が異なっていてもよいし、同一であってもよい。また、同様に上記で説明した第1領域と第2領域との界面においても、その層の組成は異なっていてもよいし、同一であってもよい。このように、本発明においては、積算残留応力の強度分布と組成の分布とは、相関してもよいし、相関しなくてもよい。なお、本発明の被覆層は、基材上の全面を被覆するもののみに限られるものではなく、部分的に被覆層が形成されていない態様をも含む。
本発明の表面被覆切削工具は、上記基材と上記被覆層との界面領域において、上記被覆層に含まれる結晶粒は、上記基材に含まれるWCの結晶粒と整合性を有していることが好ましい。ここで、「基材に含まれるWCの結晶粒と整合性を有している」とは、この界面領域において被覆層に含まれる各結晶粒がWCの各結晶粒上に柱状晶として形成され、しかもその各柱状晶の幅と各WCの結晶粒の粒径とがほぼ一致している状態をいう。WCの結晶粒の平均粒径は、上記の通り0.3μm以上2.5μm以下であることが好ましく、これにより被覆層の結晶粒の各柱状晶の幅も0.3μm以上2.5μm以下となる。
本発明の被覆層は物理蒸着層であるため、PVD法(物理蒸着法)により形成されるが、PVD法による限りいずれのPVD法によっても形成することができ、その形成方法の種類は特に限定されない。
以下、実施例を挙げて本発明をより詳細に説明するが、本発明はこれらに限定されるものではない。なお、実施例中の被覆層の化合物組成はXPS(X線光電子分光分析装置)によって確認した。また残留応力および厚み(または被覆層表面からの距離)は、上述のsin2ψ法により測定した。
以下の実施例1〜6では、被覆層として単一組成の層を形成しているが、これらの実施例で用いた組成以外の組成のものや組成が異なる2以上の層を被覆層として形成したもの、あるいは被覆層が少なくとも一部に超多層構造を含むものについても同様の効果を得ることができる。
まず、表面被覆切削工具の基材として、以下の表1に示す材質と工具形状(後述の各特性の評価方法毎に準備した)を有する切削用刃先交換型チップ(基材No.1およびNo.2)を用意し、これをそれぞれカソードアークイオンプレーティング装置に装着した。なお、各基材は、超硬合金からなるものであって、WCの結晶粒を含み、この結晶粒の平均粒径(基材表面(被覆層との界面部分)のもの)は、表1記載の通りであった。
上記で作製した実施例1〜6および比較例1〜4の表面被覆切削工具のそれぞれについて、上記の表1に示す条件による湿式(切削油剤(水溶性エマルジョン)使用)の連続切削を行なうことにより耐摩耗性の評価を行なった。該評価は、刃先の逃げ面摩耗幅が0.2mmを超える時間を切削時間として測定することにより行なった。
上記で作製した実施例1〜6および比較例1〜4の表面被覆切削工具のそれぞれについて、以下に示す条件で耐欠損性の評価試験を行なった。
表面被覆切削工具の基材として、組成がWC−2TaC−0.7Cr3C2−7Co(数字はwt%を示し、残部がWCで占められることを示す)であり、WCの結晶粒の粒径が互いに異なる二種類の超硬合金基材(WCの結晶粒の平均粒径が1.2μmのもの:実施例7、9、11で使用、同平均粒径が3.5μmのもの:実施例8、10、12で使用)を準備した(後述の各特性の評価方法毎に各1個ずつ準備した)。なお、各基材の形状は表1に記載の形状と同じ工具形状の切削用刃先交換型チップとして準備した。そして、これらの基材をそれぞれカソードアークイオンプレーティング装置に装着した。
<表面被覆切削工具の作製>
まず、表面被覆切削工具の基材として、上記の表1に示す材質と工具形状(後述の各特性の評価方法毎に準備した)を有する切削用刃先交換型チップ(基材No.1およびNo.2)を用意し、これをそれぞれカソードアークイオンプレーティング装置に装着した。なお、各基材は、超硬合金からなるものであって、WCの結晶粒を含み、この結晶粒の平均粒径(基材表面(被覆層との界面部分)のもの)は、表1記載の通りであった。
このようにして、実施例13〜15の本発明の表面被覆切削工具は、基材と、該基材上に形成される被覆層とを含むものであって、該被覆層は、10μm以上の厚みを有する物理蒸着層であり、該被覆層の表面から1μmの厚みを有する表面領域は、積算残留応力が圧縮応力となる第1領域と積算残留応力が引張応力となる第2領域とを有し、該表面領域の積算残留応力は、その表面領域に含まれるいずれの領域においても−1.5GPa以上1.5GPa以下の範囲内にあるものである。また、これらの実施例の表面被覆切削工具は、基材と被覆層との界面領域において、被覆層に含まれる結晶粒と基材に含まれるWCの結晶粒とが整合性を有していることを確認した。
<表面被覆切削工具の作製>
まず、表面被覆切削工具の基材として、上記の表1に示す材質と工具形状(後述の各特性の評価方法毎に準備した)を有する切削用刃先交換型チップ(基材No.1およびNo.2)を用意し、これをそれぞれカソードアークイオンプレーティング装置に装着した。なお、各基材は、超硬合金からなるものであって、WCの結晶粒を含み、この結晶粒の平均粒径(基材表面(被覆層との界面部分)のもの)は、表1記載の通りであった。
Claims (10)
- 基材と、該基材上に形成される被覆層とを含む表面被覆切削工具であって、
前記被覆層は、10μm以上の厚みを有する物理蒸着層であり、
前記被覆層の表面から1μmの厚みを有する表面領域は、積算残留応力が圧縮応力となる第1領域と積算残留応力が引張応力となる第2領域とを有し、
前記表面領域の積算残留応力は、その表面領域に含まれるいずれの領域においても−1.5GPa以上1.5GPa以下の範囲内にある表面被覆切削工具。 - 前記被覆層全体の積算残留応力は、−1GPa以上0GPa未満である請求の範囲1に記載の表面被覆切削工具。
- 前記第2領域の積算残留応力は、1GPa以下である請求の範囲1に記載の表面被覆切削工具。
- 前記被覆層は、15μm以上の厚みを有する請求の範囲1に記載の表面被覆切削工具。
- 前記被覆層は、20μm以上の厚みを有する請求の範囲1に記載の表面被覆切削工具。
- 前記被覆層は、1以上の層を含み、
そのうち少なくとも一層は、構成成分として少なくともTiを含む窒化物、炭窒化物、窒酸化物、および炭窒酸化物のいずれかの化合物によって構成される請求の範囲1に記載の表面被覆切削工具。 - 前記被覆層は、少なくとも一部に超多層構造を含む請求の範囲1に記載の表面被覆切削工具。
- 前記基材は、超硬合金からなり、
前記超硬合金は、WCの結晶粒を含み、
前記結晶粒の平均粒径は、0.3μm以上2.5μm以下である請求の範囲1に記載の表面被覆切削工具。 - 前記基材と前記被覆層との界面領域において、前記被覆層に含まれる結晶粒は、前記基材に含まれるWCの結晶粒と整合性を有している請求の範囲8に記載の表面被覆切削工具。
- 前記表面被覆切削工具は、旋削用に用いられる請求の範囲1に記載の表面被覆切削工具。
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| Publication number | Publication date |
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| JP5297388B2 (ja) | 2013-09-25 |
| US8389108B2 (en) | 2013-03-05 |
| KR20110005230A (ko) | 2011-01-17 |
| WO2009133814A1 (ja) | 2009-11-05 |
| EP2269752A1 (en) | 2011-01-05 |
| CN101842179A (zh) | 2010-09-22 |
| KR101255430B1 (ko) | 2013-04-17 |
| CN101842179B (zh) | 2012-11-28 |
| EP2269752B1 (en) | 2016-07-27 |
| US20100260561A1 (en) | 2010-10-14 |
| EP2269752A4 (en) | 2012-08-29 |
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