摘要
研究了含稀土和不含稀土的AgCuNi换向器在三种电机和四种试验条件下的使用性能。结果表明,添加稀土后,换向器的磨损机制由严重的粘着磨损变成磨粒磨损,磨损速率显著降低,并且消除了电弧造成的沟槽中磨屑熔焊聚集的现象。
Performances of commutators made of AgCuNi and AgCuNiRE alloys were investigated under four experimental conditions. Three types of micro-motors were used in this work. It was found that the wear mechanism of AgCuNi commutators was serious adhesive wear, whereas the wear mechanism of AgCuNiRE commutators was abrasive wear. With the addition of RE in AgCuNi, the wear rate of commutators is much decreased as compared with the RE-free commutators. Further- more, no debris is found to be welded by are in the commutator grooves between pole pieces.
出处
《微特电机》
北大核心
2009年第7期59-61,共3页
Small & Special Electrical Machines
关键词
稀土
换向器
粘着磨损
磨粒磨损
电弧
rare earth element
commutator
adhesive wear
abrasive wear
arc
