Near Net Shape Manufacturing Of Rare Earth Permanent Magnets
    3.
    发明申请
    Near Net Shape Manufacturing Of Rare Earth Permanent Magnets 有权
    稀土永磁体近净形制造

    公开(公告)号:US20150251248A1

    公开(公告)日:2015-09-10

    申请号:US13628490

    申请日:2012-09-27

    IPC分类号: B22F3/08 H01F41/02 H01F1/057

    摘要: A method of near net shaping a rare earth permanent magnet and a permanent magnet. The method includes introducing a magnetic material powder into a die, closing the die and shock compacting the powder in the die and sintering the compacted magnet powder to form the rare earth permanent magnet part. In one form, the magnetic material being subjected to compaction is a mixture made up of two or more different magnetic material powder precursors. Additional materials may be added to the mixture. One such additional material may be a lubricant to reduce the likelihood of cracking, while another may be a coating to provide oxidation protection of the mixture. Evacuation or inert environments may also be used either prior to or in conjunction with the sintering or related high-temperature part of the process.

    摘要翻译: 一种近净成形稀土永磁体和永磁体的方法。 该方法包括将磁性材料粉末引入模具中,封闭模具并冲击压实模具中的粉末并烧结压实的磁体粉末以形成稀土永磁体部件。 在一种形式中,经受压实的磁性材料是由两种或更多种不同的磁性材料粉末前体组成的混合物。 可以向混合物中加入另外的材料。 一种这样的附加材料可以是减少开裂可能性的润滑剂,而另一种可以是提供混合物的氧化保护的涂层。 疏散或惰性环境也可以在烧结或过程的相关高温部分之前或结合使用。