分享好友 知识库首页 频道列表

Method of separating and recovering rare earth magnets, rare earth magnet manufacturing method, an

2025-06-18 05:182820下载
文件类型:PDF文档
文件大小:1113K
The purpose of the present invention is to provide a separation and recovery method for rare-earth magnets, a manufacturing method for rare-earth magnets, and a manufacturing method for a rotary electric machine. In this separation and recovery method for rare-earth magnets, first, a rotor (object to be separated) (1), comprising a rotor core (2) and a permanent magnet (rare-earth magnet) (3), secured to the rotor core (2) with an adhesive (4), is heated in a vacuum with a hydrogen partial pressure of 1 kPa or below or in a non-oxidizing gas (heating step). Then, the temperature of the rotor (1) is maintained at a temperature of 850-1150°C in a vacuum with a hydrogen partial pressure of 1-15 kPa or in a non-oxidizing gas (prescribed temperature range step). Then, the rotor (1) is cooled in a vacuum with a hydrogen partial pressure of 1 kPa or below or in a non-oxidizing gas (cooling step). The adhesive (4) breaks up and the permanent magnet (3) is separated and so recovered.


请登录查看


反对 0
举报 0
收藏 0
打赏 0
评论 0