The surface canning which shows the heat dissipation Characteristic where the abrasion proof enveloping layer is superior at the cemented carbide make cutting

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 heat dissipativity. ;SOLUTION: The cemented carbide-made cutting tool with a surface clad is made by physically and vaporously depositing the clad layer for the wear resistance comprised of (a)-(d) below, (a) a tough layer comprising a single layer made of any layer among the carbide layer, the nitride layer and the carbo-nitride layer of Ti, or double layers made of two or more kinds among them, and having an average layer thickness of 0.1-10 μm, (b) an adherent layer comprising a single layer made of either the composite carbo-oxide layer or the composite carbo-nitro-oxide layer of Ti or double layers made of both of them, and having the average layer thickness of 0.1-5 μm, (c) a hard layer comprising aluminum oxide layer, and having the average layer thickness of 0.5-15 μm, (d) a heat dissipative layer comprising aluminum nitride layer, and having the average layer thickness of 0.5-15 μm on the surface of the basic body of the tool comprised of tungsten carbide base cemented carbide or titanium carbo-nitride base cermet.;COPYRIGHT: (C)2003,JPO