往复运动机构的摩擦过渡  

The Friction Transition in Reciprocating Mechanism

作　　者：林子光[1] 李修仁[1] 刘维民[2] 余来贵[2] 夏延秋 

机构地区：[1]天津工业大学,300160 [2]中科院兰州化物所固体润滑实验室,730000

出　　处：《润滑与密封》2001年第3期28-29,共2页Lubrication Engineering

基　　金：中国科学院兰州化学物理研究所固体润滑开放实验室赞助课题

摘　　要：往复运动机构在运动速度较高时能够保持流体润滑状态，但当速度降低到一定程度，运动副间的润滑形态则由流体润滑状态过渡到边界润滑状态，其摩擦系数陡增，振动和噪音加大。当在润滑剂中加入抗磨添加剂时，这种现象立即消逝。此实验提示：抗磨添加剂对于发动机润滑油是必不可缺的，对于解决往复运动机构的爬行是行之有效的。When the motion speed is higher, the reciprocating mechanism can be in the condition of hydrodynamic lubrication. And when the motion speed is lower, the lubrication condition between motion pairs transits from hydrodynamic lubrication to boundary lubrication, friction coefficient increase sharply and vibration (noise) arises. As an antiwear additive was mixed in the lubricant, the above - mentioned phenomenon disappeared. It points out that the antiwear additive is absolutely necessary in lubricant of engine and is effective to overcome the creep problem in reciprocating mechanism.

关 键 词：往复运动机构 摩擦过渡 边界润滑 爬行 润滑油 极压添加剂 

分 类 号：TH117[机械工程—机械设计及理论]