不同润滑条件下PA66的摩擦学性能研究

采用PA66试块和镀镍钢试环，在MRH-3数显式高速环块磨损试验机上开展控制变量试验，探究了PA66在干摩擦、湿润滑及不同种类完全水润滑条件下的摩擦学性能，并结合表面形貌分析其摩擦磨损机理. 结果表明:PA66在线速度0.51 m/s，载荷1.17 MPa下的摩擦学性能相对良好. 进一步开展正交试验，得出在线速度1.29 m/s、载荷0.95 MPa的完全水润滑条件下，PA66的摩擦学性能达到最优. 该研究为PA66被用作水润滑轴承或导轨的材料提供了试验依据. 

Tribological Properties of Polyamide 66 in Multiple Lubrication Conditions

In this study, controlled variable tests were carried out on the MRH-3 high-speed ring-on-block wear test machine, in order to investigate the tribological properties of polyamide 66 under dry friction, wet friction and various water lubrication conditions. The wear mechanisms were obtained by analyzing topographies of worn surfaces. It is found that polyamide 66 had good tribological properties under the linear velocity of 0.51 m/s and the pressure of 1.17 MPa. Orthogonal tests were further developed and the results showed that the best tribological property was obtained at a linear velocity of 1.29 m/s and the pressure of 0.95 MPa. This study provided the experimental basis to the application of polyamide 66 to the material of water-lubricated bearings and guide rails.