Tribological performance of hydrophobic and micro/nano triangle textured rake face of cutting tools

• Published in: Applied surface science Vol. 571; p. 151250
• Main Authors: Hou, Qimin, Yang, Xuefeng, Li, Dan, Cheng, Jian, Wang, Shouren, Xiao, Jupeng, Li, Wanyang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2022
• Subjects: Hydrophobic surface; Textured cutting tools; Tribological property; Wear mechanism; Tribological property; Wear mechanism; Textured cutting tools; Hydrophobic surface
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2021.151250

[Display omitted] •Micron-scale triangular texture was fabricated on YT15 surface by femtosecond laser technique, which imitated the texture of biological surface.•Nanoscale microbulges formed at the bottom of the triangle texture and their synergistic effect.•Texture convergence and hydrodynamic lubrication effect were analyzed with finite element simulation and theoretical model.•The textured hydrophobic surface was prepared by fluorination treatment to improve the friction and wear performance of the tool surface. In the process of metal cutting, the friction between the tool and the workpiece wears the tool seriously and degrades the surface quality of the workpiece. In order to reduce the friction coefficient, we micro/nano-textured the tool rake face triangularly with femtosecond laser and fluoridizedit with fluorosilane. We evaluated the tribological performance of the tool rake face through friction and wear experiments as well as cutting experiments, in which textures with different wetting characteristics, depths and pattern arrangements are studied. Our experiment results and theory-based analysis show that the tribological performance and machining quality of the tool are improved due to the unidirectional convergent texture and hydrophobicity of the cutting tool. When the monopulse energy was 2.5 μJ and the scanning depth was 7 μm, the micro/nano textured and fluoridized tool has the best anti-adhesion, anti-friction and wear resistance performance, the hydrodynamic pressure effect is obvious. The tribological performance of cutting tools are also increased by the bearing capacity of film between friction pairs.