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The surface canning which shows the surface lubricity which is superior vis-a-vis the chip the production mannered null tungsten carbide basis of the cemented carbide make cutting tool to the surface
The surface canning which shows the surface lubricity which is superior vis-a-vis the chip the production mannered null tungsten carbide basis of the cemented carbide make cutting tool to the surface
PROBLEM TO BE SOLVED: To provide a surface covered cemented carbide made cutting tool excellent in surface lubricity against chips.;SOLUTION: This surface covered cemented carbide made cutting tool made by chemically depositing and/or physically depositing a hard covered layer constituted of a Ti compound layer made of one kind or two kinds or more of a TiC layer, a TiN layer, a TiCN layer, a TiCO layer and a TiCNO layer basically and an Al2O3 layer and/or an Al2O3-ZrO2 mixed layer on a surface of a WC group cemented carbide base body in average layer thickness of 3-30 m is constituted by chemically depositing or physically depositing a Tioxide layer to satisfy 1.2-1.9 at an atom ratio of X against Ti in the case when it has average layer thickness of 0.1-5 m as the extreme surface layer and it is expressed in the compositional formula: TiOX on the surface of the hard covered layer.;COPYRIGHT: (C)2001,JPO
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