Wear of Coated Tungsten Carbide Tool In Cutting H.S. SteelⅠ

Abstract

In This article, the tungsten carbide tool refers to aluminum-chromium based coated
cemented tungsten carbide too, and H.S. steel refers to hardened sintered steel instead of high speed steel.

The tool life in turning sintered steels is shorter than that in turning melted steels such as carbon steels. In order to identify an effective tool material for cutting hardened sintered steel, tool wear was experimentally investigated. Hardened sintered steel was turned with two kinds of PVD coated cemented tungsten carbide tools. The coating films used were (Ti,Al)N and (Al,Cr)N. The main results obtained are as follows:

(1) The tool wear progress of the (Al,Cr)N coated cemented tungsten carbide tool was slower than that of the (Ti,Al)N coated cemented carbide tool.

(2) Because the (Al,Cr)N coating film exhibited both higher hardness and higher oxidation temperature, the wear progress of the (Al,Cr)N coated cemented tungsten carbide tool became slower.

(3) In cutting hardened sintered steel with (Al,Cr)N coated cemented tungsten carbide tool, there was little influence of the cutting speed on the tool wear within the range of the cutting speed from 0.5 m/s to 1.0 m/s.

 (To be continued. This article is divided into several parts. Here is part 1. For part 2, please refer to http://news.chinatungsten.com/en/tungsten-information/80614-ti-10431)

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