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Tool Wear in High-Speed Milling of Ti-6AI-4V Alloy

机译:Ti-6AI-4V合金高速铣削中的刀具磨损

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摘要

Titanium alloys are widely used in the aerospace industry for applications requiring high strength at elevated temperature and high mechanical resistance. However, titanium alloys are classified as extremely difficult-to-cut materials owing to their physical, chemical, and mechanical properties, which result in the low material removal rate and the short tool life. This paper presents an experimental research of the tool wear patterns and relevant wear mechanisms during high-speed milling of Ti-6Al-4V with cemented carbide inserts. SEM-EDX analysis showed that nose wear and edge wear were the main tool failure modes during high-speed milling process, which were different from the wear patterns under traditional cutting conditions. Adhesion, attrition and diffusion wear mechanisms, as well as the cracks were responsible for the tool wear.
机译:钛合金广泛用于航空航天工业,这些应用要求在高温下具有高强度并具有高机械阻力。但是,钛合金由于其物理,化学和机械性能而被归类为极难切削的材料,这导致材料去除率低和工具寿命短。本文介绍了用硬质合金刀片高速铣削Ti-6Al-4V时刀具磨损方式及相关磨损机理的实验研究。 SEM-EDX分析表明,刀头磨损和边缘磨损是高速铣削过程中的主要刀具失效方式,与传统切削条件下的磨损方式不同。粘附,磨损和扩散磨损机制以及裂纹是造成工具磨损的原因。

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