发明授权
US5288454A Method of controlling the remanent induction of a sintered magnet, and
the product thus obtained
失效
控制烧结磁体的剩余感应的方法以及由此获得的产品
- 专利标题: Method of controlling the remanent induction of a sintered magnet, and the product thus obtained
- 专利标题(中): 控制烧结磁体的剩余感应的方法以及由此获得的产品
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申请号: US1249申请日: 1993-01-06
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公开(公告)号: US5288454A公开(公告)日: 1994-02-22
- 发明人: Jean-Marc Lang , Robert Tissot
- 申请人: Jean-Marc Lang , Robert Tissot
- 申请人地址: FRX Pierre D'Allevard
- 专利权人: Aimants Ugimag S.A.
- 当前专利权人: Aimants Ugimag S.A.
- 当前专利权人地址: FRX Pierre D'Allevard
- 优先权: FRX9200910 19920123
- 主分类号: B22F3/02
- IPC分类号: B22F3/02 ; B22F5/10 ; B22F5/12 ; H01F13/00 ; H01F41/02 ; B22H3/16 ; H01F1/08
摘要:
A method for controlling the remanance of a sintered magnet by varying the time when the orienting field is applied during cold compression. The method comprises obtaining powders of an appropriate particle size, compressing the powders in an oriented field, sintering, heat treating, machining and magnetizing to technical saturation. The cold compressing in an orienting field takes place at a precompression rate of more than 15% before the orienting field is applied. The method applies to magnets of all shapes which must have magnetic induction well defined in modulus and in direction, particularly annular magnets for traveling wave tubes.
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