| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-coated cutting tool superior in chipping resistance and abrasion resistance, superior even in finished face accuracy of a machinable material, suitable for cutting high harness steel, and exhibiting excellent cutting performance over long-term use. SOLUTION: This surface-coated cutting tool is formed by vapor-depositing a boron nitride film being 30-60 area% in an inclusion rate of cubic boron nitride growing in a columnar shape in an average film thickness of 0.5-5.0 μm, on a surface of a tool base body formed of a cubic boron nitride base ultra high-pressure sintered material including a cubic boron nitride particle by 40-70 vol.% and a residual part composed of a hard dispersion phase and a bonding phase. COPYRIGHT: (C)2011,JPO&INPIT |
