Abstract Aiming at the wear phenomenon of 4241 high speed steel tool during machining, this study used femtosecond laser technology to construct hydrophobic micro and nano structures on the surface of the sample, and systematically studied the effects of laser process parameters on the surface wettability, tribological properties and wear resistance. By optimizing the laser power, scanning speed and slot spacing to 1.5 W, 30 mm s −1 and 60 μm, respectively, the prepared surface structures showed excellent anti-friction and wear properties, and the contact angle increased from 90° to 146°. The tribological experiments under the condition of water lubrication show that the friction coefficient of the surface is reduced by 55.54%, and the wear rate is reduced by 61.39%. The research shows that the hydrophobic surface has a dynamic lubrication effect. By reducing the adhesion and accumulation of abrasive particles on the tool surface, the abrasive wear is significantly slowed down. At the same time, the lubrication conditions are optimized, and the negative influence of water film retention on friction is suppressed. The tribological control mechanism of hydrophobic microstructure in water lubricated environment is revealed, which provides an innovative path for tool surface engineering design, which has important theoretical value and wide industrial application prospect.
Li et al. (Thu,) studied this question.
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