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

In last part we know that tungsten carbide tools with (Ti,W,Si)N coating film are better in wear resistance, hardness and critical scratch load, and so is maybe more effective material for cutting hardened steel. Here in this part we explain why we choose (Ti,Al)N, (Ti,W)N/(Ti,W,Si)N, and (Ti,W)N/(Ti,W,Si,Al)N coating films as the testing materials.

Furthermore, new titanium/tungsten/silicon/aluminum-based coating       films, namely (Ti,W,Si,Al)N, (Ti,W,Si,Al)C, and (Ti,W,Si,Al)(C,N) coating film, have been developed. However, it is not clear whether these coating films are effective tool materials for milling hardened steel.

In this study, hardened steel was milled with three physical vapor deposition (PVD)-coated cemented tungsten carbide end mills in order to clarify effective tool materials for cutting hardened steel at high cutting speeds. The coating films used were (Ti,Al)N,         (Ti,W)N/(Ti,W,Si)N,   and (Ti,W)N/(Ti,W,Si,Al)N coating film. The tool wear was experimentally investigated.

(To be continued. This article is divided into several parts. Here is part 5. For part 4 please refer to http://news.chinatungsten.com/en/tungsten-information/80792-ti-10486; for part 6, please refer to http://news.chinatungsten.com/en/tungsten-information/80797-ti-10488)

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