Surface coating cutting tool

A cutting tool and surface coating technology, applied in the field of surface coating cutting tools, can solve the problems of sufficient chipping resistance, poor toughness, peeling, etc., and achieve the effect of suppressing chipping and excellent wear resistance
CN103572250AActive Publication Date: 2014-02-12MITSUBISHI MATERIALS CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MITSUBISHI MATERIALS CORP
Publication Date
2014-02-12

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Abstract

The present invention provides a surface coating cutting tool with a hard coating layer, wherein the hard coating layer plays an excellent flaking-proof role in the high-speed intermittent cutting machining operation on alloy steel materials and the like. According to the technical scheme of the surface coating cutting tool, the surface of a substrate is coated with a hard coating layer which is a (Ti1-XAlX) (CYN1-Y) layer of a cubic crystal structure and evaporated through the chemical vapor deposition process with Al(CH3)3 as one component of reaction gases, wherein the atomic ratios of X and Y are as follows: 0.55 <= X <= 0.95, and 0.0005 <= Y <= 0.005. In the hard coating layer, among the inclined angle degree distribution of the inclined angles formed by relative relationship between the normal of the {111} surface of a measured crystal particle and the normal direction of the surface of the substrate, degrees in the range of 2-12 is more than 45% of the total degree, and moreover, in the shared lattice point distribution curve graph of the component atom of the hard coating layer, the distribution proportion of Sigma 3 at the side of the surface of the substrate is less than 20%, on the other hand, Sigma 3 at the side of the surface of the coating layer has the highest peak valve and the distribution proportion of Sigma 3 is more than 50%.
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Description

technical field

[0001] The present invention relates to a surface-coated cutting tool (hereinafter referred to as a coated tool), in which the hard coating layer is used in high-speed intermittent cutting processing of alloy steel and the like accompanied by high heat generation and impact load acting on the cutting edge. Excellent chipping resistance. Background technique

[0002] In the past, the following cladding tools are known, that is, usually made of tungsten carbide (hereinafter, represented by WC)-based cemented carbide, titanium carbonitride (hereinafter, represented by TiCN)-based cermets or cubic boron nitride (hereinafter represented by TiCN) , represented by cBN)-based ultra-high pressure sintered body (hereinafter, these are collectively referred to as the substrate) on the surface of the surface, coated with a Ti-Al composite nitride layer as a hard coating layer by physical vapor deposition, and They are known to exert excellent wear resistance.

[0003] ...

Claims

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