摘要
在给定的试验条件下,通过对比磨损试验研究了新型齿形链与普通外啮合齿形链的磨损机制,分析了销轴的磨损表面形貌,研究了不同油温和交变速度下新型齿形链的磨损特性.结果表明,新型齿形链的耐磨性能明显优于普通外啮合齿形链,新型齿形链在交变速度下的磨损伸长率大于非交变速度下的磨损伸长率;随着试验油温的升高,新型齿形链的磨损伸长率明显增大.
The wear mechanisms of a new silent chain and a conventional silent chain meshing with the outside flanks of the links were comparatively investigated using a high-speed chains test rig. The worn surfaces of the pins were observed using a scanning electron microscope. And the effects of the testing temperature and fluctuant speed on the wear resistance of the new silent chain were examined. It was found that the new silent chain had much better wear resistance than the conventional silent chain meshing with the outside flanks of the links, which was attributed to the special structure and the load and speed characteristics of the new silent chain. Moreover, the new silent chain recorded a larger wear elongation ratio at elevated temperature than at room temperature, and it had a larger wear elongation ration at fluctuant speed than at constant speed as well. This was related to the enhanced frictional thermal effect at elevated temperature and the more severe fatigue and wear damage at fluctuant speed.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2004年第6期560-563,共4页
Tribology
基金
国家自然科学基金资助项目(50275062)
机械工业技术发展基金资助项目(99JA0002).
关键词
新型齿形链
磨损机制
表面形貌
磨损伸长率
Fatigue of materials
Speed
Surface topography
Temperature
Wear resistance
