SURFACE COATED CEMENTED CARBIDE CUTTING TOOL HAVING CUTTING EDGE EXERTING EXCELLENT HEAT RESISTANT PLASTIC DEFORMATION IN HIGH-SPEED CUTTING

摘要

PROBLEM TO BE SOLVED: To provide a surface coated cemented carbide cutting tool having a cutting edge exerting excellent heat resistant plastic deformation in high-speed cutting.;SOLUTION: This surface coated cemented carbide cutting tool is made by forming a hard coating layer made of a multilayer with alternations of a first thin layer and a second thin layer having each of average layer thickness of 0.01 to 0.1 μm with the whole average layer thickness of 0.8 to 10 μm by vapor deposition on the surface of a tungsten carbide group cemented carbide base body. The first thin layer and the second thin layer are made of a titanium nitride layer and/or a titanium carbonitride layer and a hafnium oxide layer, respectively.;COPYRIGHT: (C)2003,JPO