Ti-W-Si-Al Based Coated Tungsten Carbide End Mills In Cutting Hardened SteelⅡ

In last part we know that tungsten carbide end mills with (Ti,W,Si)N and (Ti,W,Si,Al)N coating films will be tested to determine the best materials for cutting hardened steel. Here in this part we give the results to be reached in this article.

The following results were obtained:

(1) In milling hardened steel at a cutting speed of 3.33 m/s, the tool wear width of the (Ti,W)N/(Ti,W,Si,Al)N-coated tungsten carbide end mill was smaller than that of the (Ti,W)N/(Ti,W,Si)N-coated one. And, compared with the commercial (Ti,Al)N, the tool wear width of the (Ti,W)N/(Ti,W,Si,Al)N-coated tool was smaller than that of the (Ti,Al)N-coated tool.

(2) The tool wear of the (Ti,W)N/(Ti,W,Si,Al)N-coated tool increased with an increase in cutting  speed.

(3) The cemented carbide with (Ti,W)N/(Ti,W,Si,Al)N coating film was an effective tool material for high-speed cutting below a cutting speed of 3.33 m/s.

(To be continued. This article is divided into several parts. Here is part 2. For part 1 please refer to http://news.chinatungsten.com/en/tungsten-information/80788-ti-10483; for part 3, please refer to http://news.chinatungsten.com/en/tungsten-information/80791-ti-10485)

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