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CUTTING TOOL MADE OF SURFACE COATED CEMENTED CARBIDE HAVING CUTTING BLADE PART EXHIBITING SUPERIOR HEAT- RESISTING PLASTIC DEFORMATION IN HIGH-SPEED CUTTING
CUTTING TOOL MADE OF SURFACE COATED CEMENTED CARBIDE HAVING CUTTING BLADE PART EXHIBITING SUPERIOR HEAT- RESISTING PLASTIC DEFORMATION IN HIGH-SPEED CUTTING
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机译:表面涂层硬质合金切削刀具,具有切削刀片,在高速切削中表现出优异的耐热塑性变形
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摘要
PROBLEM TO BE SOLVED: To provide a cutting tool made of surface coated cemented carbide having a cutting blade part exhibiting superior heat-resisting plastic deformation in high-speed cutting.;SOLUTION: In this cutting tool made of surface coated cemented carbide, a hard coating layer formed by a multiplayer with alternations of a first thin layer and a second thin layer individually having an average layer thickness of 0.01 to 0.1 μm is formed on the surface of a tungsten carbide-base cemented carbide substrate with the whole average layer thickness of 0.8 to 10 μm by evaporation. The first thin layer is formed of an aluminum oxide layer having a κ-type crystal structure and the second thin layer is formed of a titanium nitride layer. The proportion of the first thin layer occupying the hard coating layer is 60 to 90 mass %.;COPYRIGHT: (C)2002,JPO
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