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1. 发明授权

US4274888A Magnetic cores 失效
标题翻译：磁芯
公开(公告)号：US4274888A
公开(公告)日：1981-06-23
申请号：US946417
申请日：1978-09-27
申请人： Heinrich Schnurbus , Horst Nelle , Wilhelm Wolf
发明人： Heinrich Schnurbus , Horst Nelle , Wilhelm Wolf
IPC分类号： C22F1/10 , H01F1/147 , H01F3/02 , C21D1/04
CPC分类号： C22F1/10 , H01F1/14716
摘要： The invention herein disclosed is directed to novel magnetic cores, particularly magnetic tape-wound cores, and to a new, novel and less expensive method of manufacture. The alloys employed in the manufacture of these cores employ smaller quantities of expensive metals such as nickel and, accordingly, result in substantial savings. The cores are exceptionally useful because of their high available flux-density change and high pulse permeability. Generally, the alloys employed contain nickel contents of from about 49 to 56 percent by weight of the alloy, and the remainder is substantially iron and small quantities of additives. The magnetic core is heat treated in a hydrogen atmosphere for several hours, cooled to room temperature, then reheated above the Curie Point and then cooled in a transverse magnetic field. Alternatively, it is possible to cool to just above the Curie Point, and omit the room temperature cooling and subsequent reheating.
摘要翻译：本文公开的本发明涉及新的磁芯，特别是磁带缠绕芯，以及新的，新颖的和较便宜的制造方法。用于制造这些铁芯的合金采用较少数量的昂贵的金属如镍，因此可大大节省成本。由于其高的可用通量密度变化和高的脉冲透过率，这些芯是非常有用的。通常，所用的合金含有合金重量的约49％至56％的镍含量，其余部分基本上是铁和少量添加剂。将磁芯在氢气氛中热处理数小时，冷却至室温，然后在居里点以上再加热，然后在横向磁场中冷却。或者，可以冷却到居里点以上，并省略室温冷却和随后的再加热。

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