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试验研究表明,影响低连滚动和滑动接触的润滑机理,主要由下面3种因素的综合效应所决定:即表面上边界润滑膜的化学组成;由于表面形貌作用,使润滑剂在表面凹处形成流体静压力;同样由于表面形貌作用,使润滑剂在沟纹处产生挤压效应。这3种不同的效应是在四盘机上通过测量摩擦力加以证实的。测量结果表明,凹凸不平的表面形貌对接触区域中,润滑剂的流动特性有着很大的影响。因此,表面形貌和润滑剂的粘度都是影响摩擦和磨损性能的重要因素,甚至在没有流体动力楔效应存在下的低速滚动接触中也是如此。
Experimental studies have shown that the mechanism of lubrication affecting low rolling and sliding contact is mainly determined by the following three factors: the chemical composition of the lubricating film on the surface; the surface morphology of the lubricant in the surface of the recess The formation of hydrostatic pressure; the same due to the role of surface morphology, the lubricant squeeze effect in the groove. These three different effects are confirmed on a four-disc machine by measuring friction. The measurement results show that the uneven surface morphology has a great influence on the flow characteristics of the lubricant in the contact area. Therefore, both the topography and the viscosity of the lubricant are important factors affecting the friction and wear properties, even in low speed rolling contact without the presence of a hydrodynamic wedge effect.