The surface canning which shows the resistance blade tipping Characteristic where the abrasion proof enveloping layer is superior at the cemented carbide make end mill or

摘要

PROBLEM TO BE SOLVED: To provide a cemented carbide-made cutting tool with a surface clad of which the clad layer for wear resistance is exerting excellent chipping resistance property. ;SOLUTION: This cutting tool is made by physically and vaporously depositing the clad layer for the wear resistance comprised of a tough layer comprising a single layer made of one kind or double layers made of two kinds among the carbide layer, the nitride layer and the carbo-nitride layer of Ti, and having an average layer thickness of 0.1-10 μm, a lower side hard layer comprising a single layer made of either the composite nitride layer of Ti and Al or the composite carbo-nitride layer of Ti and Al, or double layers made of both of them, and having the average layer thickness of 0.1-15 μm, an intermediately adherent layer comprising a single layer made of either the composite carbo-oxide layer or the composite carbo-nitro-oxide layer of Ti and Al or double layers made of both of them, and having the average layer thickness of 0.1-1.0 μm, and an upper side hard layer comprising an aluminum oxide layer, and having the average layer thickness of 0.5-15 μm on the surface in the basic body of the tool comprised of tungsten carbide base cemented carbide or titanium carbo- nitride base cermet.;COPYRIGHT: (C)2003,JPO