Abstract
ABSTRACT Three kinds of grooved textures with different geometric patterns were prepared on cemented carbide tool surfaces. Finite element software FLUENT was used to simulate and analyse the fluid pressure of lubricants on the different micro-groove textured surfaces. Friction and wear experiments of titanium alloy balls and cemented carbides were carried out to investigate the tribological properties. The results show that the friction coefficient of the line groove textured surface is the smallest under dry friction conditions. Moreover, the friction coefficient of the sinusoidal groove textured surface is the smallest under fluid lubricated conditions. Experimental results show that lubrication of the grooved textured surfaces is consistent with the numerical simulation results. The main friction reduction mechanism of textures involves reducing the contact area of friction pairs and capturing debris under unlubricated conditions and supplying lubrication to form a continuous lubrication film and producing a dynamic pressure effect under fluid lubricated conditions.
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