IEC 60404-8-7:2017由国际电工委员会 IX-IEC 发布于 2017-09-00,并于 2017-09-19 实施。
IEC 60404-8-7:2017 在中国标准分类中归属于: H53 电工用钢,在国际标准分类中归属于: 29.030 磁性材料。
This part of IEC 60404 defines the grades of cold-rolled grain-oriented electrical steel strip and sheet in nominal thicknesses of 0,23 mm, 0,27 mm, 0,30 mm and 0,35 mm. In particular, it gives general requirements, magnetic properties, geometric characteristics, tolerances and technological characteristics, as well as inspection procedures. This document applies to Goss textured grain-oriented electrical steel strip and sheet supplied in the final annealed condition in coils or sheets, and intended for the construction of magnetic circuits. The grades are grouped into two classes: conventional grades; high permeability grades, including grades which may be delivered in the domain refined condition. They correspond to Class C22 of IEC 60404-1.
标准详见:https://webstore.iec.ch/publication/69988 国际电工委员会发布磁性材料标准IEC 60404-8-4:20222022年9月21日,国际电工委员会发布标准IEC 60404-8-4:2022《磁性材料-第8-4部分:单项材料规格-以全加工状态交货的冷轧非定向电工钢片和钢带》。...
为了稳定和改善抑制剂的状态,还必须进行常化处理。为了获得钢带更好的延展性和良好的冷加工性能,可以对钢带进行在线热处理。在带钢外形、厚度公差和表面缺陷等方面还有待于深入开发和研究。3.3、取向电工钢连续退火取代罩式退火用连续退火炉取代罩式退火炉完成二次再结晶和净化钢中的抑制剂已经成为生产高端取向电工钢的重要方法。这种退火工艺仅需几分钟,而非几天,大大缩短了退火时间。...
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