摘要
道路行驶磨损试验结果表明，摩托车传动用滚子链套筒和销轴零件的主要磨损形式是磨粒磨损，并伴随有疲劳磨损的特征．由微观分析和链条的磨损伸长量可知：套筒和销轴的初始表面硬度较高，有利于改善其磨损表面形貌状态和耐磨性；在磨粒磨损机制下，套筒和销轴零件的表面硬度较低，容易产生“犁切”，表面层的循环硬化现象比较明显，磨损严重；在油池润滑条件下，套筒和销轴零件的表面硬度较高，裂纹的扩展速率较快，循环软化现象也较明显，当表面硬度较低时发生循环硬化．循环软化与循环硬化是导致磨损严重的原因之一．
It was showed by running on the road that wear characteristic of bushes and bearing pins of roller chains for the motor cycle is abrasive wear,together with stress fatigue wear;it was demonstrated by microstructure analysis and lengthened amount of the worn chains that both morphology of wear surface and wear resistance could be improved by high initial surface hardness.In the case of abrasive wear was the main mechanisms for the two matels,low surface hardness of the bushes and bearing pins of roller chains tend to produce large ploughing grooves,obvious characteristics of cyclic hardening and severe wear.Under oil pool lubrication,rate of crack propagation is large and cyclic softening is obvious when surface hardness of the bush and bearing pin is high.Cyclic hardnening occoured when surface hardness of the bush and bearing pin is low.It is concluded that both cyclic softening and hardnening is one of the reasons for the severe wear.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
1996年第3期230-234,共5页
Tribology
基金
机械工业部科技计划资助
关键词
磨粒磨损
滚子链条
摩托车
试验
链传动
abrasive wear surface hardness fatigue crack roller chain motor cycle
