SURFACE-COATED CUTTING TOOL EXCELLENT IN DEFECT RESISTANCE

To provide a surface-coated cutting tool excellent in defect resistance used in the cutting work of stainless steels and steel materials on which a fusion cutting surface remains.SOLUTION: A surface-coated cutting tool has a hard coating layer having total average layer thickness of 0.6-20.0 μm incl...

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Hauptverfasser: TATSUOKA SHO, ASARI SHOTA, KASHIWA NAOKI
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creator TATSUOKA SHO
ASARI SHOTA
KASHIWA NAOKI
description To provide a surface-coated cutting tool excellent in defect resistance used in the cutting work of stainless steels and steel materials on which a fusion cutting surface remains.SOLUTION: A surface-coated cutting tool has a hard coating layer having total average layer thickness of 0.6-20.0 μm including the lower and upper layers on the substrate surface of a tungsten carbide-based hard alloy. The lower layer comprises a TiW complex carbonitride, has an area of the maximum W density in which W is in a range of 0.5-5.0 atom% in the area from the outermost surface of the substrate to 0.1 μm of a layer thickness and has the area of the maximum C density in which C is in the range of 7.0-25.0 atom% in the area over the above area to 1.6 μm. The upper layer has the average layer thickness of 0.4-18.4 μm and includes an AlTi complex nitride or complex carbonitride (composition formula: AlXTi1-X)(CYN1-Y) (here, 0.75≤Xavg≤0.90 and 0≤Yavg
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The lower layer comprises a TiW complex carbonitride, has an area of the maximum W density in which W is in a range of 0.5-5.0 atom% in the area from the outermost surface of the substrate to 0.1 μm of a layer thickness and has the area of the maximum C density in which C is in the range of 7.0-25.0 atom% in the area over the above area to 1.6 μm. The upper layer has the average layer thickness of 0.4-18.4 μm and includes an AlTi complex nitride or complex carbonitride (composition formula: AlXTi1-X)(CYN1-Y) (here, 0.75≤Xavg≤0.90 and 0≤Yavg&lt;0.05) having an NaCl type face-centered cubic crystal structure.SELECTED DRAWING: Figure 1 【課題】ステンレス鋼や溶断表面が残存する鋼材等の切削加工における、耐欠損性にすぐれた表面被覆切削工具の提供。【解決手段】炭化タングステン基超硬合金基体表面に下部層と上部層とを含む全平均層厚0.6〜20.0μmの硬質被覆層を有し、前記下部層はTiW複合炭窒化物からなり、基体最表面より層厚0.1μmまでの領域にてWが0.5原子%以上5.0原子%以下の最大W濃度領域を有し、前記領域を超え1.6μmまでの領域において、C7.0原子%以上25.0原子%以下のC最大濃度領域を有し、上部層は、AlTi複合窒化物または複合炭窒化物(組成式:(AlXTi1−X)(CYN1−Y);0.75≦Xavg≦0.90、0≦Yavg<0.05)を含み、NaCl型の面心立方晶構造を有する膜厚0.4〜18.4μmである表面被覆切削工具。【選択図】図1</description><language>eng ; jpn</language><subject>BORING ; CHEMICAL SURFACE TREATMENT ; CHEMISTRY ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING MATERIAL WITH METALLIC MATERIAL ; COATING METALLIC MATERIAL ; DIFFUSION TREATMENT OF METALLIC MATERIAL ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL ; MACHINE TOOLS ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; METALLURGY ; PERFORMING OPERATIONS ; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION ; TRANSPORTING ; TURNING</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20211007&amp;DB=EPODOC&amp;CC=JP&amp;NR=2021154415A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20211007&amp;DB=EPODOC&amp;CC=JP&amp;NR=2021154415A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TATSUOKA SHO</creatorcontrib><creatorcontrib>ASARI SHOTA</creatorcontrib><creatorcontrib>KASHIWA NAOKI</creatorcontrib><title>SURFACE-COATED CUTTING TOOL EXCELLENT IN DEFECT RESISTANCE</title><description>To provide a surface-coated cutting tool excellent in defect resistance used in the cutting work of stainless steels and steel materials on which a fusion cutting surface remains.SOLUTION: A surface-coated cutting tool has a hard coating layer having total average layer thickness of 0.6-20.0 μm including the lower and upper layers on the substrate surface of a tungsten carbide-based hard alloy. The lower layer comprises a TiW complex carbonitride, has an area of the maximum W density in which W is in a range of 0.5-5.0 atom% in the area from the outermost surface of the substrate to 0.1 μm of a layer thickness and has the area of the maximum C density in which C is in the range of 7.0-25.0 atom% in the area over the above area to 1.6 μm. 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The lower layer comprises a TiW complex carbonitride, has an area of the maximum W density in which W is in a range of 0.5-5.0 atom% in the area from the outermost surface of the substrate to 0.1 μm of a layer thickness and has the area of the maximum C density in which C is in the range of 7.0-25.0 atom% in the area over the above area to 1.6 μm. The upper layer has the average layer thickness of 0.4-18.4 μm and includes an AlTi complex nitride or complex carbonitride (composition formula: AlXTi1-X)(CYN1-Y) (here, 0.75≤Xavg≤0.90 and 0≤Yavg&lt;0.05) having an NaCl type face-centered cubic crystal structure.SELECTED DRAWING: Figure 1 【課題】ステンレス鋼や溶断表面が残存する鋼材等の切削加工における、耐欠損性にすぐれた表面被覆切削工具の提供。【解決手段】炭化タングステン基超硬合金基体表面に下部層と上部層とを含む全平均層厚0.6〜20.0μmの硬質被覆層を有し、前記下部層はTiW複合炭窒化物からなり、基体最表面より層厚0.1μmまでの領域にてWが0.5原子%以上5.0原子%以下の最大W濃度領域を有し、前記領域を超え1.6μmまでの領域において、C7.0原子%以上25.0原子%以下のC最大濃度領域を有し、上部層は、AlTi複合窒化物または複合炭窒化物(組成式:(AlXTi1−X)(CYN1−Y);0.75≦Xavg≦0.90、0≦Yavg<0.05)を含み、NaCl型の面心立方晶構造を有する膜厚0.4〜18.4μmである表面被覆切削工具。【選択図】図1</abstract><oa>free_for_read</oa></addata></record>
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subjects BORING
CHEMICAL SURFACE TREATMENT
CHEMISTRY
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING MATERIAL WITH METALLIC MATERIAL
COATING METALLIC MATERIAL
DIFFUSION TREATMENT OF METALLIC MATERIAL
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
METALLURGY
PERFORMING OPERATIONS
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TRANSPORTING
TURNING
title SURFACE-COATED CUTTING TOOL EXCELLENT IN DEFECT RESISTANCE
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