The influence of micro-groove parameters on the lubrication performance of plane friction pair is studied, by combining theoretical analysis with experiment. The theoretical model of single-groove is established, the variation rules of bearing capacity, maximum pressure and friction coefficient are obtained by changing the number, width and depth of groove. At the same time, micro-grooves with different parameters are processed on the surface of friction pair, the variation rules of the average friction coefficient, friction coefficient under different lubrication conditions are obtained in experiment, and the wear condition of friction pair surface is observed. The results show that the lubrication performance of friction pair increases, with the increase of the micro-groove width. The numerical value of the groove width–depth ratio will influence the friction pair, when the width–depth ratio is greater than or equal to 2.5, the dynamic pressure effect of micro-groove occupies a dominant position, which can improve effectively the lubrication performance. When the width–depth ratio is less than 2.5, the micro-groove will have a negative impact, resulting in the increase of friction coefficient. The groove density will also influence the lubrication performance of friction pair, when the density is less than 10%, the spacing between the micro grooves is too large to collect wear particles, when the density is greater than 20%, the surface roughness of friction pair will be affected, leading to the increase of friction coefficient. The optimal parameters of the micro-groove obtained are as follows: the optimal density is 10%, the width is 0.1–0.2 mm, and the ratio of width to depth is greater than or equal to 2.5. In addition, by comparing the variation of friction coefficient under different lubrication conditions, it can be concluded that adding solid lubricant in lubricating oil, can not only reduce the friction coefficient value, but also decrease the variation fluctuation of friction coefficient.

结合理论分析和实验研究了微槽参数对平面摩擦副润滑性能的影响。建立了单槽的理论模型，通过改变槽的数量，宽度和深度，得出了承载力，最大压力和摩擦系数的变化规律。同时，在摩擦副表面上加工了具有不同参数的微沟槽，通过实验得出了平均摩擦系数，不同润滑条件下摩擦系数的变化规律，并观察了摩擦副表面的磨损情况。 。结果表明，随着微沟槽宽度的增加，摩擦副的润滑性能提高。槽宽深比的数值会影响摩擦副，当宽深比大于或等于2.5时，微槽的动压效应占据主导地位，可以有效提高润滑性能。 。当宽深比小于2.5时，微沟槽将产生负面影响，从而导致摩擦系数增加。沟槽密度也会影响摩擦副的润滑性能，当密度小于10％时，微沟槽之间的间距太大，无法收集磨损颗粒；当密度大于20％时，摩擦表面的粗糙度对将受到影响，导致摩擦系数增加。获得的微沟槽的最佳参数如下：最佳密度为10％，宽度为0.1-0.2毫米，宽度与深度之比大于或等于2.5。另外，通过比较不同润滑条件下摩擦系数的变化，可以得出结论，在润滑油中添加固体润滑剂，不仅可以减小摩擦系数值，而且可以减小摩擦系数的变化波动。