High cutting temperature will lead to a short tool life and a poor machining quality during titanium alloy machining. High efficiency cooling methods are always required to reduce the cutting temperature. In this paper, heat transfer experimental platform was set up and one-dimension heat transfer model was established to get critical heat flux (CHF) used to evaluate the cooling capacity of the cooling methods. The effect of cold mist jet (CMJ) was evaluated by transient heat transfer tests and titanium alloys cutting experiments, comparing with cold air jet, flood cooling and minimum quantity lubricant. The experimental results revealed that CMJ with a high CHF has a stronger cooling capacity than other cooling methods and has greatly reduced the cutting temperature in high-speed cutting of titanium alloys. And tool life and surface quality have been both improved with CMJ. This paper offered a way for evaluating the cooling effects of different cooling methods with heat transfer experiments.

中文翻译：

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瞬态热传递冷雾射流对钛合金高速切削的冷却效果

较高的切削温度将导致钛合金加工期间刀具寿命短和加工质量差。始终需要高效的冷却方法以降低切割温度。本文建立了传热实验平台，建立了一维传热模型，得到临界热通量（CHF），用于评价冷却方式的冷却能力。通过瞬态传热测试和钛合金切割实验评估了冷雾喷射（CMJ）的效果，并将其与冷空气喷射，洪流冷却和少量润滑剂进行了比较。实验结果表明，高CHF的CMJ具有比其他冷却方法更强的冷却能力，并大大降低了钛合金高速切削中的切削温度。CMJ改善了刀具寿命和表面质量。本文提供了一种通过传热实验评估不同冷却方法的冷却效果的方法。