When grinding hard-to-machining materials such as titanium alloys, a massive grinding heat is generated and gathers in the grinding zone due to the low thermal conduction of the materials. The accumulated grinding heat easily leads to severe thermal damages to both the workpiece and the grinding wheel. A novel oscillating heat pipe (OHP) grinding wheel is one of the solutions to this phenomenon. The oscillating heat pipe grinding wheel can transfer the grinding heat directly from the grinding zone to avoid heat accumulation and a high temperature rise. In this paper, the temperature field of the grinding Ti-6Al-4V alloy is investigated, via the oscillating heat pipe grinding wheel, by numerical analysis. The three-dimensional thermal conduction model is built accordingly, containing the grinding wheel, grinding zone and Ti-6Al-4V workpiece. Due to the enhanced heat transport capacity of the oscillating heat pipe grinding wheel, the highest temperature in the grinding zone and the temperature on the ground surface of the workpiece decrease dramatically. For example, under a grinding heat flux of 1 × 10⁷ W/m², when using the grinding wheel without OHP and with OHPs, the highest temperature in the grinding zone drops from 917 °C to 285 °C by 68.7%, and the ground surface temperature decreases from 823 °C to 244 °C by 71.2%. Moreover, the temperature distribution on the grinding wheel is more uniform with an increase of the number of oscillating heat pipes.

中文翻译：

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振荡热管砂轮磨削Ti-6Al-4V钛合金温度场的数值分析

当研磨难加工的材料（例如钛合金）时，由于材料的低导热性，会产生大量的研磨热并聚集在研磨区中。累积的磨削热容易对工件和砂轮造成严重的热损伤。一种新颖的振荡热管（OHP）砂轮是解决此问题的方法之一。摆动式热管砂轮可以直接从磨削区传递磨削热量，以避免热量积聚和高温升高。本文通过振荡热管砂轮，通过数值分析研究了Ti-6Al-4V合金磨削的温度场。相应地建立了三维热传导模型，其中包含砂轮，研磨区和Ti-6Al-4V工件。由于摆动式热管砂轮的传热能力增强，磨削区的最高温度和工件地面的温度急剧下降。例如，在1×10的磨削热通量下⁷ W / m ²，当使用不带OHP和带OHP的砂轮时，磨削区的最高温度从917°C下降到285°C降低了68.7％，地表温度从823°C下降到244° C降低71.2％。此外，随着振荡热管数量的增加，砂轮上的温度分布更加均匀。