40Cr-复合橡胶水润滑滑动轴承的摩擦行为对比  

Comparative Study on Friction and Temperature Performances for Water-lubricated 40Cr-composite Rubber Journal Bearing

作　　者：陈曼[1] 程志涛[1] 孟凡明[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《实验室研究与探索》2016年第10期3-6,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(51375509)

摘　　要：由润滑介质和摩擦配副属性角度出发,利用MPV-20B型屏显式摩擦试验机,对40Cr-复合橡胶水润滑轴承摩擦副和40Cr-铜合金油润滑轴承摩擦副的摩擦系数和温度变化进行了对比试验。结果表明:水润滑条件下,40Cr-复合橡胶摩擦副的摩擦系数随转子线速度的增大而减小,温度波动不大;油润滑条件下,40Cr-铜合金摩擦副的摩擦系数随试验载荷的增大而增大,温度也随之升高;相较于金属油润滑轴承,橡胶所具有的良好的对异物埋没性使橡胶水润滑轴承的摩擦系数更小,套筒的结构特点及水的物理性质使橡胶水润滑轴承的温升更低。Confronted with the insufficiency in research on water-lubricated 40Cr-composite rubber journal bearing, a comparative experiment was carried out from the perspectives of lubricating medium and friction pair＇ s attribute using MPV-20B friction tester. The friction coefficients and temperature rises for the friction pairs of water-lubricated 40Cr- composite rubber bearing and oil-lubricated 40Cr-copper alloy bearing were compared, respectively. The results revealed that for the water-lubricated 40Cr-composite rubber bearing, the friction coefficient decreases and the temperature slightly fluctuates with increasing linear velocity of the bearing rotor. For the oil-lubricated 40Cr-copper alloy bearing, the friction coefficient and temperature both increase with increasing test load. Compared with the oil-lubricated metallic bearing, the good debris-capturing feature of the rubber gives the water-lubricated rubber bearing a lower friction coefficient, the physical property of the pure water and structural characteristic of the bearing sleeve make the water- lubricated rubber bearing has a lower temperature rise.

关 键 词：40Cr 水润滑轴承 摩擦系数 温升 

分 类 号：TH142.2[一般工业技术—材料科学与工程] TH117.1[机械工程—机械制造及自动化]