氯苯基硅油润滑球轴承在真空环境下摩擦性能与泄漏量研究

阐明氯苯基硅油润滑球轴承的润滑机理,对不同真空度和转速下的轴承摩擦力矩进行研究.在真空度3×10 ^-5Pa条件下,选用FY-3卫星“紫外臭氧垂直探测仪”光学调制器电机样机和进口电机进行8个月工程试验后,利用高倍显微镜分析试验轴承表观状态,并分析氯苯基硅油的泄漏量.结果表明:在3×10^-5Pa下,所用试验轴承的摩擦力矩值随着转速的增大而趋向稳定;氯苯基硅油润滑球轴承摩擦力矩的变化量为9.8×10^-4Nm,小于采用Maplub101润滑的进口电机轴承摩擦力矩变化量;试验期间氯苯基硅油的泄漏量为1.92mg,证明采用氯苯基硅油润滑适合光学调制器在真空环境下长期运转

Frictional Performance and Leakage of Ball Bearings Lubricated by Chlorphenyl Silicone oil in Vacuum

This paper expatiated the Principle of ball bearing lubricated by chlorphenyl silicone oil , and frictional torque of ball bearing can be studied under different vacuum levels or rotational speeds . under 3 x 10 -5 Pa, , engineering tests were conducted on the model machine motor of optical modulator on FY-3 satellite Ultraviolet Ozone Vertical Probe and import motor for eight months . The working contact zones of ball bearings were analyzed by using high power microscope , and the leakage rate of chlorphenyl Silicone oil were all analyzed . The friction of bearing tested tended to be stable as the rotating speed increased . The variation of friction torque of bearing lubricated by chlorphenyl silicone oil was 9 . 8 x 10 - 4 N . m , which was lower than that of motor lubricated by MaPlub 101grease . The leakage rate of chlorpheny silicone oil was 1 . 92 mg . It was concluded that chlorpheny silicone oil can Provide long - term lubrication of space optical modulator