Influence of oil supply on the friction state of the micro-textured surface of the sliding guide

Purpose This study investigates the influence of the law and functional mechanism of oil supply (initial oil film thickness) on the friction state of micro-textured surface sliding guide surfaces through pin-on-slider friction experiments. Design/methodology/approach Friction coefficient, contact surface temperature and lubrication state under different speeds were investigated. The transition of the friction mechanism of the micro-textured surface induced by the initial oil film thickness was revealed, and the control model of the lubrication state of the micro-textured surface was established. Findings It was found that the speed and initial oil film thickness had a greater influence on the tribological performance of the micro-textured surface. The friction interface was in a semi-dry friction state with a speed of less than 0.06 m/s. The friction coefficient decreased with the increase of initial oil film thickness, and the wear mechanism was abrasive wear, adhesive wear and fatigue wear. Originality/value This work focuses on the influence of velocity and initial oil film thickness on the friction coefficient, friction temperature and fractal dimension of the worn surface; the wear mechanism of the micro-structured surface was discussed; and the control model of the lubrication state of the micro-textured surface was established.