SURFACE COATED CUTTING TOOL

• Main Authors: NAKAMURA KEIJI, HONMA HISASHI, OSADA AKIRA
• Format: Patent
• Language: English
• Published: 15.01.2009
• 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

PROBLEM TO BE SOLVED: To provide a surface coated cutting tool with a hard coated layer exerting superior chipping resistance and wear resistance in high speed intermittent cutting. SOLUTION: In this surface coated cutting tool, at least a Ti compound layer is formed by deposition as the hard coated layer. At least one layer of the Ti compound layer is constituted of a TiCN layer having a highest peak existing in an inclination angle section in the range of 0 to 10 degrees and a total of frequency occupying a rate of 45% or more of the frequency total, in an inclination angle frequency distribution graph of normals of ä112} faces. Further, at least one layer of the Ti compound layer is constituted of a (Ti, Cr)CN layer having a highest peak existing in an inclination angle section in the range of 0 to 10 degrees and a total of frequency occupying a rate of 45% or more of the frequency total, in an inclination angle frequency distribution graph of normals of ä111} faces. COPYRIGHT: (C)2009,JPO&INPIT