Due to the important role of cutting fluid in lubrication of tools, achieving its better wetting effect on the surface has become a research hotspot. Castor oil is widely used in machining with excellent lubrication, but its poor wettability cannot be ignored. To enhance the wettability of castor oil on the tool surface, grooves were prepared on the surface of high-speed steel (HSS) by laser, then nylon fibers were vertically implanted into the grooves by electrostatic flocking. The optimization experiments of groove sizes, electrostatic voltage and fiber length were performed, then flocking surfaces with enhanced wettability were evaluated through the self-propulsion, and high-temperature wetting tests. The results show that the penetration length of oil in the flocking grooves (5.71 mm) is 2.28 times that of the non-flocking grooves (1.74 mm). Moreover, the dense fibers increase the heat exchange area at a high temperature, resulting in a rapid rise in temperature of droplet. Thereby the viscosity resistance of the oil is reduced, accelerating the penetration of oil droplets, which are completely wetting for only 0.3 s at 80 °C. This study is of reference value and practical significance for the application of flocking surfaces enhancing the wettability of cutting fluid.

由于切削液在刀具润滑中的重要作用，使其在表面获得更好的润湿效果成为研究热点。蓖麻油广泛用于机械加工，润滑性好，但其润湿性差也不容忽视。为提高蓖麻油对刀具表面的润湿性，采用激光在高速钢（HSS）表面制备凹槽，然后通过静电植绒将尼龙纤维垂直植入凹槽中。进行了凹槽尺寸、静电电压和纤维长度的优化实验，然后通过自推进和高温润湿试验评估了具有增强润湿性的植绒表面。结果表明，植绒槽内油的渗透长度（5.71 mm）是非植绒槽（1.74  mm）的2.28倍。此外，密集的纤维增加了高温下的热交换面积，导致液滴温度迅速升高。从而降低油的粘度阻力，加速油滴的渗透， 在 80 °C 下仅 0.3 秒就完全润湿。本研究对植绒表面增强切削液润湿性的应用具有参考价值和现实意义。