砂轮磨切中表面活化剂对超声制备纳米雾化液性能的影响

Effects of Surfactant on Performances of Atomized Nano Cutting Fluid after Ultrasonic Dispersion in Abrasive Cutting-grinding

为了分析表面活化剂对超声制备纳米雾化液性能的影响,以砂轮磨切机为研究对象,分别进行了干切试验,以及高水基溶液、水基溶液+表面活化剂、水基溶液+石墨烯颗粒和水基溶液+表面活化剂+石墨烯颗粒4种润滑条件作用下的切割试验。试验结果表明:雾化液可有效减小磨切机切割力,而表面活化剂通过减小雾化液液滴润湿角(最大可减小24.9%),可改善石墨烯颗粒在溶液中的分散度,使纳米雾化液更好地发挥润滑作用;相比高水基雾化液,添加表面活化剂的纳米雾化液可在切入阶段进一步减小35.4%的切向切割力和57.2%的径向切割力。

In order to analysis the effects of the surfactant on the performances of atomized nano liquids after ultrasonic preparation, by using grinding wheel cutting-grinding machine, a comparative cutting experiment was carried out with dry cutting, as well as the four different kind of atomized cutting fluids, high water-based fluid, water-based fluid + surfactant, water-based fluid + graphene particles and water-based fluid + surfactant + graphene particles respectively. The experimental results show that the atomized liquid may effectively reduce the grinding cutting forces and the surfactant played a better role in lubrication by reducing the atomized droplet wetting angle(maximum reduction of 24.9%) to improve the dispersion of graphene particles in cutting fluid. And compared with high water atomized liquid, surfactant may further reduce the tangential forces by 35.4% and the normal forces by 57.2% at the beginning of the cutting processes.