| 摘要 |
PROBLEM TO BE SOLVED: To provide a cutting tool made of surface-coated cemented carbide having a hard coating layer excellent in wear resistance and showing excellent machinability even in high speed machining for steel and cast iron over a long period. SOLUTION: This cutting tool made of surface-coated cemented carbide is the one in which the surface of a WC base cemented carbide substrate contg., as bonding phase forming elements, 5 to 20wt.% Co, and in which a surface layer in which Co is removed by laser irradiation heating or electron beam irradiation heating is formed on the ridgeline part of cutting edges in which the cutting face and flank of the cutting edges cross is applied with a hard coating layer composed of one or >= two kinds of Ti compound layers among a TiC layer, a TiN layer, a TiCN layer, a TiCO layer, a TiNO layer and a TiCNO layer and an Al2 O3 layer with 2 to 20μm average layer thickness by chemical vapor deposition and/or physical vapor deposition.
|
