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钛合金铣削加工中的一个突出问题是刀具寿命短 ,容易出现缺口、崩刃和剥落等现象 ,因而限制了它的进一步推广和使用。目前 ,为了提高刀具寿命 ,人们主要利用切削液来减小铣削过程中的摩擦和热量。然而 ,由于切削液会对环境造成污染 ,不符合绿色制造先进理念的要求。本文通过大量的试验 ,对氮气介质下铣削钛合金时的刀具寿命和磨损特征进行了分析和研究 ,从而得出了在氮气介质下铣削钛合金比干铣削具有明显优势的结论 ,探讨了氮气介质下铣削钛合金时的刀具磨损机理 ,得出了高速钢刀具在氮气介质下铣削和干铣削钛合金时刀具寿命的泰勒公式。
A prominent problem in the milling of titanium alloy is the short tool life, prone to the phenomenon of the gap, chipping and peeling, which limits its further promotion and use. At present, in order to improve the tool life, people mainly use cutting fluid to reduce the friction and heat in the milling process. However, due to the cutting fluid will cause environmental pollution, does not meet the advanced concept of green manufacturing requirements. In this paper, a large number of experiments were carried out to analyze and study the tool life and wear characteristics of titanium alloy under nitrogen gas milling. The conclusion is that the milling milling of titanium alloy under nitrogen atmosphere has obvious advantages over dry milling, Under the milling of titanium alloy tool wear mechanism, obtained high-speed steel tool in the nitrogen medium milling and dry milling titanium alloy tool life Taylor formula.