Invention Grant
US07931756B2 Method and machine of making rare-earth alloy granulated powder and method of making rare-earth alloy sintered body
有权
制造稀土合金造粒粉的方法和机器及制备稀土合金烧结体的方法
- Patent Title: Method and machine of making rare-earth alloy granulated powder and method of making rare-earth alloy sintered body
- Patent Title (中): 制造稀土合金造粒粉的方法和机器及制备稀土合金烧结体的方法
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Application No.: US12573374Application Date: 2009-10-05
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Publication No.: US07931756B2Publication Date: 2011-04-26
- Inventor: Futoshi Kuniyoshi , Tomoiku Otani
- Applicant: Futoshi Kuniyoshi , Tomoiku Otani
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: Hitachi Metals, Ltd.
- Current Assignee: Hitachi Metals, Ltd.
- Current Assignee Address: JP Minato-ku, Tokyo
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2001-362436 20011128; JP2002-298621 20021011
- Main IPC: H01F1/04
- IPC: H01F1/04 ; H01F1/053
Abstract:
A method of making a rare-earth alloy granulated powder according to the present invention includes the steps of: preparing a rare-earth alloy powder; generating remnant magnetization in the powder; and granulating the powder by utilizing agglomeration force produced by the remnant magnetization of the powder. Since the agglomeration force produced by the remnant magnetization is utilized, the addition of a granulating agent may be omitted.
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