Ultrasonic vibration has been applied to suppress the chemical tool wear in ultra-precision diamond cutting of steel and other alloys. The tool wear is found significantly reduced with enriched ambient oxygen concentration. In this study, instead of supplying costly and potentially hazardous high concentration oxygen to the machining zone, a greener alternative, high-pressure air coolant has been applied to enhance the oxygen content at the cutting area. The effect of air-blowing pressure on ultrasonic vibration cutting of stainless steel was investigated, using both polycrystalline and single-crystal diamond tools. It has been found that an increased air blowing pressure and a more closely positioned nozzle not only improve the cutting performance but also reduce tool wear, reflecting consequences from both chemical and fluidic dynamics aspects. A higher air blowing pressure will increase the instantaneous air pressure as well as the density of oxygen molecules around the cutting zone. This increases the passivation speed for the freshly cut steel surface caused by the formation of thin oxide layers. Experimental results have formalized the findings that sub-millisecond oxide formation is the key factor to suppress diamond tool wear.

超声波振动已被应用于抑制钢和其他合金超精密金刚石切割过程中的化学刀具磨损。发现随着环境氧浓度的增加，工具磨损显着减少。在这项研究中，不是向加工区供应昂贵且具有潜在危险的高浓度氧气，而是应用了一种更环保的替代高压空气冷却剂来提高切割区域的氧气含量。使用多晶和单晶金刚石工具研究了鼓风压力对不锈钢超声振动切割的影响。已经发现，增加的吹气压力和位置更紧密的喷嘴不仅提高了切割性能，而且减少了工具磨损，反映了化学和流体动力学方面的结果。较高的吹气压力会增加瞬时气压以及切割区周围氧分子的密度。由于薄氧化层的形成，这增加了新切割钢表面的钝化速度。实验结果证实了亚毫秒氧化物形成是抑制金刚石工具磨损的关键因素的发现。