This paper experimentally investigates the influence of working conditions on the friction properties, wear behaviors, and seizure limit of journal bearing friction pairs including the aluminum bronze shafts and the steel bearings. The tribological tests were conducted by the journal bearing friction and lubrication characteristic test-rig under different relative clearances, applied loads, rotational speeds, and inlet oil temperatures. The worn surfaces were measured by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and laser microscopic 3D profile device to obtain the fault mechanisms. The results showed that the seizure limit value could be improved with the increase of relative clearance. The main wear mechanism of friction pairs is adhesive wear for a small relative clearance, and the main wear mechanism is transformed into abrasive wear with the increase of the bearing relative clearance.

本文通过实验研究了工作条件对包括铝青铜轴和钢轴承在内的轴颈轴承摩擦副的摩擦性能、磨损行为和咬合极限的影响。摩擦学试验是通过轴颈轴承摩擦和润滑特性试验台在不同的相对间隙、施加的载荷、转速和进口油温下进行的。通过扫描电子显微镜、能量色散 X 射线光谱仪和激光显微 3D 轮廓仪测量磨损表面，以获得故障机制。结果表明，随着相对清除率的增加，可以提高咬合极限值。摩擦副的主要磨损机理是小相对间隙的粘着磨损，