45钢干摩擦三维表面形貌特征研究

Study on 3-D Topographical Characteristics of Dry Sliding Surface of 45 Steel

利用HST-100销-盘式摩擦磨损试验机考察干摩擦条件下45钢销试样的摩擦学性能,采用nanofocus三维表面轮廓测定仪检测其磨损表面形貌。研究表明,摩擦系数和表面高度偏差随滑动速度和载荷的变化存在一定的相关性,但二者随速度变化的相关性更强;陡峭度与复杂条件下摩擦系数呈线性变化,摩擦系数越大,陡峭度越大,尖峰宽度越小。

The dry sliding tribological properties of 45 steel were investigated by a pin-on-disc tribo-tester,and the worn surfaces were detected by three-dimensional surface profile measuring tester.The relation of the tribological properties and the surface topography of 45 steel was studied.The results show that the friction coefficient and surface height deviation have some correlation with the change of the sliding speed and load,and it is more relevant with the sliding speed.Steep degree and friction coefficient under complex conditions assume a linear relation,and the greater the friction coefficient,the greater the steel degree,the smaller the peak width.