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

Method of controlling the remanent induction of a sintered magnet, and
the product thus obtained
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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