HARD COATING EXHIBITING EXCELLENT PERFORMANCE IN DRY MACHINING

PROBLEM TO BE SOLVED: To provide hard coating exhibiting excellent performance in dry machining with both of a coating with high melting resistance in the vicinity of the ridgeline of the blade of a rake face having scrapes flowing therein, which tends to form a built-up edge, and a coating with hig...

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Bibliographische Detailangaben
Hauptverfasser:	KANDA KAZUTAKA, KITAJIMA KAZUO, KATOU NORIHIRO
Format:	Patent
Sprache:	eng
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 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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide hard coating exhibiting excellent performance in dry machining with both of a coating with high melting resistance in the vicinity of the ridgeline of the blade of a rake face having scrapes flowing therein, which tends to form a built-up edge, and a coating with high heat resistance/oxidation resistance preventing the occurrence of crater wear under the influence of heat on the rake face having scrapes flowing therein. SOLUTION: In a first layer 2 contacted with a tool body 1, the coating of TiN, TiAlN, or CrN is put on as an adhesion layer. In a second layer 3, the coating of TiAlN or TiSiN is put on as a heat resistance, abrasion resistance layer. In a third layer 4, the coating of AlCrN is put on as a heat resistance, oxygen barrier layer. In a forth layer 5 which is the outmost surface, the coating of TiAlN or TiSiN is put on as a melting resistance layer. COPYRIGHT: (C)2008,JPO&INPIT