JP5079998B2 - 被覆切削工具インサートで金属の被加工物を機械加工する方法及び被覆切削工具インサート - Google Patents
被覆切削工具インサートで金属の被加工物を機械加工する方法及び被覆切削工具インサート Download PDFInfo
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- 238000005520 cutting process Methods 0.000 title claims abstract description 52
- 238000003754 machining Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 title claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 159
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 239000002356 single layer Substances 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 31
- 229910052799 carbon Inorganic materials 0.000 claims description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 13
- 150000004767 nitrides Chemical class 0.000 claims description 13
- 229910052719 titanium Inorganic materials 0.000 claims description 13
- 229910052726 zirconium Inorganic materials 0.000 claims description 13
- OSIVBHBGRFWHOS-UHFFFAOYSA-N dicarboxycarbamic acid Chemical compound OC(=O)N(C(O)=O)C(O)=O OSIVBHBGRFWHOS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052735 hafnium Inorganic materials 0.000 claims description 7
- 229910001060 Gray iron Inorganic materials 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 description 13
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 11
- 239000000919 ceramic Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 238000007514 turning Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 239000011195 cermet Substances 0.000 description 2
- 238000010981 drying operation Methods 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/148—Composition of the cutting inserts
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C1/00—Milling machines not designed for particular work or special operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
- B23P17/02—Single metal-working processes; Machines or apparatus therefor
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/14—Cast iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/04—Aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/32—Titanium carbide nitride (TiCN)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/36—Titanium nitride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/04—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner applied by chemical vapour deposition [CVD]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/10—Coatings
- B23B2228/105—Coatings with specified thickness
-
- 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
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
-
- 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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
-
- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
-
- 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
- Y10T82/00—Turning
- Y10T82/10—Process of turning
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Chemical Vapour Deposition (AREA)
- Turning (AREA)
- Physical Vapour Deposition (AREA)
Description
外層としてのAl2O3−層は、CVDで形成され、2〜10μmの平均厚みを有し、一般的にα−タイプ及び/またはκ−タイプの結晶組織を有する。
任意に、TiN層は、0.5〜2μmの厚みを有し、この黄金色調により切刃の切削作業前後を識別する目的で、表面層のように上層に堆積される。
高硬度であるが従来のような厚い被膜を備えない機材からなる被覆切削インサートが、セラミック切削工具インサートのように実質的に同じかまたはさらに高い性能を備え、高速度機械加工において使用可能であることが、驚くべきことに判明した。
アルミナ層が、第1の層に隣り合い、
付加層が、アルミナ層に隣り合い、且つこの付加層が、Ti、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物を含み、且つ
付加アルミナ層が前記付加層に隣り合う。
第1の層は超硬合金ボディに隣り合い、この第1の層は、Ti、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物またはそれらの混合物を含み、3〜30μm好ましくは4〜15μmの厚みを有し、
この第1の層に隣り合うαアルミナ層は、3〜40μm好ましくは4〜20μmの厚みを有し、
付加層はこのアルミナ層に隣り合い、この付加層は、金属のTi、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物またはそれらの混合物または複層を含み、3〜30μm好ましくは4〜15μmの厚みを有し、且つ
上記の付加層に隣り合う付加αアルミナ層は、3〜40μm好ましくは4〜20μmの厚みを有し、且つ前記超硬合金ボディが、6.5wt%以下好ましくは5wt%以下のバインダー層含有量を有する。
この被膜は、公知の従来のCVDまたはMT−CVD技術を使用して堆積される
表1にしたがう化学組成を有する超硬合金基材A〜Dは、従来の方法で粉末から混練加工、加圧成形、及び焼結をして作られ、研削加工をしたりまたはせずに、ISO標準規格のCNMA120416−T02020およびCNMA120416−KRのインサートの形状にした。
この後、このインサートは公知の工程を使用して洗浄して被覆する。被覆する化学組成及び厚みは、表2に表示する。
基材 Co TaC NbC TiC Cr3C2 WC 硬度HV3
A 3.7 1.5 0.5 − − 残部 1840
B 5.2 − − − 0.5 残部 1775
C 5.9 0.6 0.4 7.7 − 残部 1850
D 6.0 − − − − 残部 1620
被膜 Ti(C,N) Al2O3 Ti(C,N) Al2O3 Ti(C,N) Al2O3 合計厚み**
番号 μm μm μm μm μm μm μm
1発明 7.5 11.1 7.6 9.0 --- --- 35.2
2発明 8.0 10.2 7.5 3.5 --- --- 29.2
3発明 8.8 12.4 8.5 12.2 8.0 12.6 62.5
4従来例 7.2 10.1 --- --- --- --- 17.3
5従来例 8.5 4.5 --- --- --- --- 13.0
6 15.3 15.5 30.8
*:超硬合金金基材の最接近層
**:接合層及び変態層を含む合計被膜厚み
Ti(C、N)層の厚みは、接合層及び変態層の厚みを含む。
30μmの切刃半径(被覆していないインサート上で測定して)を有し、被膜1、2または6を有する基材A、B及びCであって、A/1、B/2、B/6及びC/2、それにB/4及びD/6で表示される、インサート形式CNMA120416−T02020が、ねずみ鋳鉄のブレーキ盤の高速度切削試験に課せられた。この盤は139mmの直径を有し、ボディの軸方向に向かって種々の角度方向付けされた小さな平面を有する。150枚の盤の処理後、切刃の逃げ面摩耗幅を測定した。比較例としては、インサートB/4であり、且つ市販で入手可能な同じ形状を有するSi3N4セラミックインサートが用いられた。
被加工物: SS0120、ねずみ鋳鉄
作業の形式: 連続内面旋削作業
切削速度: 500〜1000m/分で変化、ほとんどが900m/分を超える
切り込み深さ: 2〜4mm
送り: 0.5mm/回転
冷却剤: 乾燥作業
切削時間: 部品当たり合計で10秒、種々の時間長さの単一切削を含む
インサート 逃げ面摩耗、mm
A/1発明 0.17
B/2発明 0.18
C/2発明 0.20
B/6発明 0.21
B/4従来例 0.60
D/5従来例 0.97
Si3N4セラミックインサート 0.20
実施例3は、直径177mmのブレーキ盤を、インサートA/1、D/1、A/2、B/2、A/3、B/6、B/4及びC/5で繰り返された。このインサートが摩耗するまでの盤の個数が決定された。
被加工物: SS0120、ねずみ鋳鉄
作業の形式: 連続内面旋削作業
切削速度: 600〜1200m/分で変化、ほとんどが1000m/分を超える
切り込み深さ: 2〜4mm
送り: 0.5mm/回転
冷却剤: 乾燥作業
切削時間: 部品当たり合計で10秒、種々の時間長さの単一切削を含む
インサート 盤の個数
A/1発明 233
D/1発明 177
A/2発明 203
B/2発明 191
A/3発明 240
B/6発明 201
B/4従来技術 80
C/5従来技術 55
Si3N4セラミック/比較例 217
実施例4は、同一の軸に互いに隣接して配置された5個のねずみ鋳鉄の一体からなるか被加工物を、インサートA/1、A/2、A/4、A/6、B/2、B/4で繰り返された。このインサートが摩耗するまでの盤の個数が決定された。単一の盤の厚みは16.5mmであり、且つこの盤の直径は約245mmであった。長手方向の旋削加工作業は、切削速度が1000m/分の一定に保持するようにして実施された。5個の盤を貫通する総通過回数が、このインサートが摩耗するまで、VBが0.5mmを超えるまで、または切刃破損が発生するまでに決定された。
被加工物: SS0120、ねずみ鋳鉄
作業の形式: 数回断続する連続旋削
切削速度: 1000m/分
切り込み深さ: 2mm
送り: 0.5mm/回転
冷却剤: 乾燥作業
インサート 盤の個数
A/1発明 25
A/2発明 23
B/2発明 20
B/4従来例 12
A/4従来例 4
A/6発明 18
Si3N4セラミック/比較例 21
B 接合変態層を含むTi(C、N)層
C Al2O3層
D 接合変態層を含むTi(C、N)層
E Al2O3層
Claims (8)
- 超硬合金ボディと、単層、多層及び交互堆積の少なくとも1種として堆積した被膜とを含んで成る被覆切削工具インサートで金属の被加工物を機械加工する方法であって、前記超硬合金ボディが、1700HV3を超える硬さを有し、前記被膜が25〜75μmの厚みを有し、且つ前記超硬合金ボディに隣り合う第1の層(B)を含んでなり、且つ前記第1の層が、Ti、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物またはそれらの混合物を含み、
アルミナ層(C)が、前記第1の層に隣り合い、
付加層(D)が、前記アルミナ層(C)に隣り合い、且つ前記付加層(D)が、Ti、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物を含み、且つ付加アルミナ層(E)が前記付加層(D)に隣り合っており、
且つ機械加工を600m/分より大きい切削速度で行なう、ことを特徴とする被覆切削工具インサートで金属の被加工物を機械加工する方法。 - 前記機械加工を、2〜4mmの切り込み深さと、0.3〜0.7mm/回転の送りとで行なうことを特徴とする請求項1に記載の機械加工する方法。
- 前記被膜が、Ti、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物またはそれらの混合物の少なくとも1層と、アルミナの少なくとも1層とを含むことを特徴とする請求項1または2に記載の方法。
- 前記被加工物が、ねずみ鋳鉄であることを特徴とする1〜3のいずれか1項に記載の方法。
- 単層、多層及び交互堆積層の少なくとも1種を含む被膜と、超硬合金ボディとからなる被覆切削工具インサートであって、
前記超硬合金ボディが、1700HV3を超える硬さを有し、前記被膜が25〜75μmの合計厚みを有し、且つ
第1の層(B)が前記超硬合金ボディ(A)に隣り合い、前記第1の層がTi、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物またはそれらの混合物を3〜30μmの厚みで含み、
アルミナ層(C)が、3〜40μmの厚みで前記第1の層に隣り合い、
付加層(D)が、前記アルミナ層(C)に隣り合い、且つ前記付加層(D)が、Ti、Zr及びHfの少なくとも1種の炭化物、窒化物、炭窒化物またはカルボキシ窒化物またはそれらの混合物を3〜30μmの厚みで含み、且つ
付加αアルミナ層(E)が、3〜40μmの厚みで前記付加層(D)に隣り合い、且つ前記超硬合金ボディ(A)が、6.5wt%以下のバインダー層含有量を有する、
ことを特徴とする被覆切削工具インサート。 - 前記第1の層(B)と前記付加層(D)との厚みの差が20%未満であり、且つ前記アルミナ層(C)と前記付加アルミナ層(E)との厚みの差が20%未満である、ことを特徴とする請求項5に記載の被覆切削工具インサート。
- 前記第1の層(B)と前記付加層(D)との厚みの差が20%未満であり、且つ前記付加アルミナ層(E)が前記アルミナ層(C)の20〜60%である、ことを特徴とする請求項5に記載の被覆切削工具インサート。
- 前記第1の層(B)及び前記付加層(D)の少なくとも1層が、柱状組織でTi(C,N)から成る、ことを特徴とする請求項5〜7のいずれか1項に記載の被覆切削工具インサート。
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SE0402386A SE528107C2 (sv) | 2004-10-04 | 2004-10-04 | Belagt hårdmetallskär, speciellt användbart för höghastighetsbearbetning av metalliska arbetsstycken |
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EP (1) | EP1643012B1 (ja) |
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SE530755C2 (sv) * | 2006-03-03 | 2008-09-02 | Sandvik Intellectual Property | Belagt cermetskär och användning därav |
SE530634C2 (sv) * | 2006-06-15 | 2008-07-22 | Sandvik Intellectual Property | Belagt hårdmetallskär, metod att tillverka detta samt dess användning vid torr fräsning av gjutjärn |
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US7416778B2 (en) | 2008-08-26 |
KR20120140642A (ko) | 2012-12-31 |
US20080070046A1 (en) | 2008-03-20 |
SE528107C2 (sv) | 2006-09-05 |
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