CUTTING TOOL MADE OF SURFACE-COATED SUPER HARD ALLOY, AND METHOD FOR MANUFACTURE THEREOF

A surface-coated cutting tool comprising: a hard substrate; a lower layer which is formed on a surface of the hard substrate, consisting of a Ti and Al composite nitride layer having a variable composition structure and an average thickness of 1.5 to 10 µ m; and an upper layer having an average thic...

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Bibliographische Detailangaben
Hauptverfasser:	OSADA, AKIRA, NAKAMURA, EIJI, MASUNO, TOMOYUKI, MORITA, KEISUKE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 COMBINED OPERATIONS DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MILLING OTHER WORKING OF METAL PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TURNING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	A surface-coated cutting tool comprising: a hard substrate; a lower layer which is formed on a surface of the hard substrate, consisting of a Ti and Al composite nitride layer having a variable composition structure and an average thickness of 1.5 to 10 µ m; and an upper layer having an average thickness of 1 to 10 µ m, which is formed on the lower layer and having a texture in which fine grains of crystalline Ti (C,N) based compounds or fine grains of crystalline (Ti, Al)(C, N) based compounds are dispersively distributed in a matrix of a carbon based amorphous material containing W.