表面亲润性对限量供油润滑影响的研究  

Influence of Surface Wettability on Lubrication by Limited Lubricant Supply

作　　者：臧淑燕[1] 郭峰[1] 李超[1] 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266520

出　　处：《摩擦学学报》2017年第4期429-434,共6页Tribology

基　　金：国家自然科学基金项目(51275252);教育部博士点基金项目(20133721110002)资助~~

摘　　要：利用面接触润滑油膜测量系统,研究了固液界面亲和性对限量供油润滑的影响.试验中以静止的微型钢滑块和旋转的光学透明圆盘形成流体动压润滑薄膜.结果表明:在表面能较高的圆盘面上润滑油均匀铺展,润滑膜厚随供油体积的增加而增加.当盘面表面能较低时润滑油因反润湿以离散油滴的形式分布,供油体积较低时形成膜厚较高.对于试验中采用的最低供油量,表面能较低的盘面产生较高的膜厚.试验观察到的现象与润滑剂在润滑表面的分布有关.The influence of surface wettability on the lubrication by limited lubricant supply（LLS） was studied with the test rig for measuring lubrication film thickness in flat-on-flat contact. In the tests, lubricating film was generated by a stationary steel slider and a rotating transparent disc with a fixed inclination angle. The results show that the lubricant spreaded well on the disc surface with high wettability, and film thickness increased with increasing lubricant supply quantities. When the disc surface energy/wettability was low, the lubricant stayed on the disc surface in the form of discrete droplets due to dewetting, and higher film thickness was obtained with smaller lubricant supply quantity. The experimental findings could be explained by the lubricant distribution on the lubricated tracks.

关 键 词：面接触 油膜厚度 润湿性 光干涉 限量供油 

分 类 号：TH117[机械工程—机械设计及理论]