| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-coated cemented carbide cutting tool having excellent adhesiveness and wear resistance of a hard film. SOLUTION: In the surface-coated cemented carbide cutting tool, a surface of a part of a cemented carbide base body is machined, and at least one layer of a hard film is provided on the cemented carbide base body. In a cutting blade ridge part, the ratio of presence of WC particles having the grain size of≤0.2μm by the machining is≤50% in an area within 3μm inwardly from the surface of the base body, the Rmax value indicating the surface roughness of the surface of the base body is≤0.8μm, and the contact ratio of the WC particles with the hard film is≥70% on an interface between the WC particles of the size larger than 0.2μm and the hard film. COPYRIGHT: (C)2006,JPO&NCIPI
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