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SURFACE-COATED CUTTING TOOL HAVING HARD COATING LAYER EXHIBITING EXCELLENT CHIPPING RESISTANCE AND EXCELLENT WEAR RESISTANCE IN HIGH-SPEED HEAVY CUTTING OF HEAT RESISTANT ALLOY
SURFACE-COATED CUTTING TOOL HAVING HARD COATING LAYER EXHIBITING EXCELLENT CHIPPING RESISTANCE AND EXCELLENT WEAR RESISTANCE IN HIGH-SPEED HEAVY CUTTING OF HEAT RESISTANT ALLOY
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机译:具有硬涂层的表面涂层刀具,在耐热合金的高速重切削中表现出出色的耐切削性和出色的耐磨性
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摘要
PROBLEM TO BE SOLVED: To provide a surface-coated cutting tool having a hard coating layer exhibiting excellent chipping resistance and excellent wear resistance in high-speed heavy cutting of a heat resistant alloy.;SOLUTION: The surface-coated cutting tool has a tool substrate made of a tungsten carbide-based cemented carbide or a titanium carbonitride-based cermet, and the hard coating layer applied to a surface of the tool substrate. The hard coating layer comprises a composite nitride layer composed of Ti, Al, and Si, vapor-deposited by arc ion plating, as a lower layer, and a composite nitride layer composed of Ti, Al, Si, Mo, and S, simultaneously vapor-deposited by arc ion plating and sputtering, as an upper layer. The upper layer is formed of a composition variable layer comprising (Al, Ti, Si, Mo, S)N having a mean layer thickness of 1 to 8 μm, in which a maximum point of Al-Ti-Si content and a maximum point of Mo-S content exist alternately repeatedly along a layer thickness direction at intervals of 0.03 to 0.1 μm.;COPYRIGHT: (C)2008,JPO&INPIT
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