空间用合成碳氢润滑油的长寿命润滑特性分析  

Analysis of Long Life Lubrication Characteristics for Space Hydrocarbon Lubricating Oils

作　　者：徐增闯[1,2] 崔维鑫 郝丽春[3] 梁宇翔[3] 郑伟波[1] XU Zengchuang;CUI Weixin;HAO Lichun;LIANG Yuxiang;ZHENG Weibo(Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083;University of Chinese Academy of Sciences, Beijing, 100049;China Petroleum & Chemical Corporation Petrochemical Science Research Institutes, Beijing, 100083)

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院大学,北京100049 [3]中国石油化工股份有限公司石油化工科学研究院,北京100083

出　　处：《中国机械工程》2020年第15期1793-1797,共5页China Mechanical Engineering

基　　金：国家重点研发计划资助项目(2017YF0111403);中国科学院战略先导专项(XDA15013100)。

摘　　要：为评估空间润滑油在空间环境下的摩擦磨损和长寿命润滑性能,以空间碳氢润滑油RP4752为研究对象,分别采用真空螺旋摩擦试验机(SOT)和滑动摩擦试验机测试润滑油的名义润滑寿命、磨斑直径和滑动摩擦因数,结合扫描电子显微镜和X射线能量色散谱仪进行微观分析。结果表明:RP4752润滑油在真空环境下滑动摩擦因数较小,耐磨寿命较长,具有良好的真空边界润滑性能,试验前后润滑油的红外透过率在14~16.25μm波段无明显变化。在真空寿命验证试验中,两台采用RP4752润滑油润滑轴承的扫描电机旋转圈数达3.02×10^8,满足运动机构8年在轨运行寿命的需求。此寿命试验结果与SOT试验的润滑油名义寿命每微克1615圈可形成比对关系,为其他空间运动机构润滑油的选用及长寿命润滑设计提供试验依据。The friction and wear and long-life lubrication performances of space lubricants in space environments were investignted.The hydrocarbon lubricant RP4752 was used as the research object,and the vacuum spiral orbit tribometer(SOT)and sliding friction test system were used to test the lubricating oils.Nominal lubrication life,wear spot diameter and sliding friction coefficient were combined with scanning electron microscopy and X-ray energy dispersive spectrometer for microscopic analysis.The results show that RP4752 has a small sliding friction factor and a long wear life in a vacuum environments,and has good vacuum boundary lubrication performance.The lubricating infrared transmittance has no significant change in 14~16.25μm band.In the vacuum life verification tests,the numbers of rotations of two scanning motors lubricated with RP4752 reach 3.02×10^8,which meets the 8-year on-orbit operating life requirements of the moving mechanisms.The results form a comparison relationship with a nominal life of 1615 rotations by SOT tests,which provides a test basis for the selection of lubricants for other space motion mechanisms and long-life lubrication design.

关 键 词：空间运动机构 油润滑 真空环境 摩擦磨损 长寿命 

分 类 号：TH117.3[机械工程—机械设计及理论]