65Mn弹性挡圈脆断及热处理工艺优化  

Brittle Fracture and Heat Treatment Process Optimization of 65Mn Elastic Ring

作　　者：徐磊[1] 杨健[1] 汪迪坤 王桢楠[1] 韩和兵 XU Lei;YANG Jian;WANG Di-kun;WANG Zhen-Nan;HAN He-bing(No.21 Research Institute of CETC,Shanghai 200233,China)

机构地区：[1]中国电子科技集团公司第二十一研究所,上海200233

出　　处：《微特电机》2021年第7期57-59,共3页Small & Special Electrical Machines

摘　　要：在电机装配过程中,65Mn弹性挡圈时常出现脆断,给安装增加难度,减慢装配进度。对65Mn弹性挡圈的受力情况进行有限元仿真分析,挡圈的脆断是因为在大应力作用下,65Mn弹性挡圈硬度过高,无法调整自身应力分布,造成脆断。针对该问题,采用适当延长低温回火的保温时间的热处理方式,可以大幅提高批次生产的弹簧挡圈硬度的均匀性,解决装配过程中的挡圈脆断问题。In the motor assembly process,65Mn elastic ring often appears brittle fracture,which increases the difficulty of installation and slows down the assembly progress.The stress condition of 65Mn elastic ring was analyzed by finite element simulation.It was considered that the brittle fracture of the ring was due to the high hardness of 65Mn elastic ring under the action of large stress,which could not adjust its own stress distribution,resulting in brittle fracture.In view of the problem,it was found that the heat treatment method of appropriately extending the holding time of low-temperature tempering could greatly improve the hardness uniformity of the spring retaining ring produced in batches,and solved the brittle fracture problem of the retaining ring in the assembly process.

关 键 词：65Mn弹性挡圈 脆断 高温淬火 低温回火 保温时间 

分 类 号：TM305[电气工程—电机]