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Experimental Investigation on Ultrasonic Atomization Assisted Turning of Titanium Alloy

机译:钛合金超声雾化辅助车削的实验研究

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摘要

There are high cutting temperatures, large tool wear, and poor tool life in conventional machining, owing to the superior strength and low thermal conductivity of titanium alloy. In this work, ultrasonic atomization assisted turning (UAAT) of Ti6Al4V was performed with a mixed water-soluble oil-based cutting fluid, dispersed into tiny droplets by the high frequency vibration of a piezoelectric crystal. Different cutting speeds and two machining environments, dry and ultrasonic atomization assisted machining, were considered in the investigation of tool life, tool wear morphology, surface roughness, and chip morphology. In comparison with dry machining, UAAT shows lower tool wear and longer tool life due to the advantages of cooling and lubrication. Furthermore, better surface roughness, smoother chip edges, and shorter tool-chip contact length were obtained with UAAT.
机译:由于钛合金的优越强度和低导热性,在常规加工中存在较高的切削温度,较大的刀具磨损和较差的刀具寿命。在这项工作中,Ti6Al4V的超声雾化辅助车削(UAAT)用混合的水溶性油基切削液进行,并通过压电晶体的高频振动分散成微小的液滴。在研究刀具寿命,刀具磨损形态,表面粗糙度和切屑形态时,考虑了不同的切削速度和两种加工环境(干法和超声雾化辅助加工)。与干式加工相比,由于冷却和润滑的优势,UAAT显示出更低的刀具磨损和更长的刀具寿命。此外,使用UAAT可获得更好的表面粗糙度,更光滑的切屑边缘和更短的刀具-切屑接触长度。

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