滚/滑接触下一种航天润滑油4129摩擦特性及黏温特性研究  

Study of Frictional and Viscosity-temperature Characteristics of a Space Lubricating Oil No.4129 in Rolling /sliding Contact

作　　者：王燕霜[1,2] 曹佳伟[2] 李航[2] 李璞[2] 

机构地区：[1]天津职业技术师范大学机械工程学院,天津300222 [2]河南科技大学机电工程学院,河南洛阳471003

出　　处：《兵工学报》2014年第9期1515-1520,共6页Acta Armamentarii

基　　金：国家自然科学基金项目(51105131);河南省科技创新杰出青年基金项目(124100510002);河南省高校创新人才项目(2011HASTIT016)

摘　　要：在自行研制的模拟航天轴承的摩擦力试验机上,对4129航天润滑油进行了摩擦特性分析。对该润滑油在实际高低温工况下的黏度进行了测量。分析了温度、滚动速度和滑动速度与该油摩擦系数的关系,建立了该航天润滑油的黏温模型、摩擦系数计算模型。研究结果表明:当温度小于0℃时,4129航天润滑油黏度随温度的变化非常大;温度大于30℃时,其黏度随温度的变化较小。当滑动速度小于0.3 m/s时,该油摩擦系数随滑动速度近似线性增加;当滑动速度大于0.3 m/s时,摩擦系数随着滑动速度的增加呈非线性增加;当滑动速度大于1 m/s之后,摩擦系数随滑动速度增加基本保持不变。摩擦系数随油温的增加而减小。当滚动速度从1 m/s增加到3 m/s时,油的摩擦系数迅速下降,随着滚动速度继续增加,摩擦系数下降缓慢直到达到最小值,然后基本保持不变。The frictional characteristics of a space lubricating oil No. 4129 are tested by using the selfmade friction test rig which can simulate the frictional characteristics of aerospace bearing. The viscosity of this oil is measured by the kinematical viscometer at the high and low temperatures. The effects of the temperature, rolling speed and sliding speed on the friction coefficient are analyzed. A viscosity-temperature model and a frictional characteristic model are established. The results show that its viscosity varies considerably when the temperature is below 0 ℃ , and its viscosity varies slowly when the temperature is above 30 ℃. When the sliding speed is less than 0. 3 m/s, the friction coefficient of this oil varies linearly with the sliding speed. When the sliding speed surpasses 0.3 m/s, the friction coefficient varies non- linearly with the sliding speed. When the sliding speed surpasses 1 m/s, the friction coefficient remains about the same with the increase in sliding speed. The friction coefficient decreases with the increase in temperture. When the rolling speed increases from 1 m/s to 3 m/s, the friction coefficient decreases quickly. Then the friction coefficient decreases slowly until it reaches the minimum value and keeps unchanged with the increase in rolling speed.

关 键 词：航空、航天材料 航天轴承 航天润滑油 黏温特性 摩擦特性 

分 类 号：TH117[机械工程—机械设计及理论]