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METHOD FOR MANUFACTURING ALLOY POWDER FOR REAR-EARTH MAGNET BASED ON EVAPORATION PROCESSING AND METH 发明申请

2023-05-30 1770 1175K 0

专利信息

申请日期 2025-07-18 申请号 WOCN13091065
公开(公告)号 WO2014101882A1 公开(公告)日 2014-07-03
公开国别 WO 申请人省市代码 全国
申请人 XIAMEN TUNGSTEN CO LTD
简介 Disclosed are a method for manufacturing alloy powder for a rear-earth magnet based on evaporation processing and a method for manufacturing a rear-earth magnet, comprising the following steps : grinding alloy crude powder for a rear-earth magnet, then manufacturing fine powder through micro-grinding, and obtaining the fine powder and an evaporation material through evaporation processing in vacuum or an inert gas atmosphere, wherein a ratio of weight of the evaporation material evaporated onto the fine powder to that of the fine powder is 10-6 to 0.05 : 1. After the micro-grinding procedure, and before a forming procedure in a magnetic field, a fine-powder evaporation processing procedure is added, so that the powder sinterability changes dramatically, thereby achieving the objective of manufacturing a magnet with a high coercivity, a high rectangularity, and a high heat resistance.


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