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

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

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.

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 3×10-5 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 9.8×10-4 N.m,which was lower than that of motor lubricated by Maplub 101 grease. The leakage rate of chlorphenyl silicone oil was 1.92 mg. It was concluded that chlorphenyl silicone oil can provide long-term lubrication of space optical modulator.