IEC 60404-8-7:2020 磁性材料 - 第8-7部分:各​​种材料的规格 - 在完全处理状态下交付的冷轧晶粒取向电工钢带和板材

标准编号：IEC 60404-8-7:2020

中文名称：磁性材料 - 第8-7部分:各​​种材料的规格 - 在完全处理状态下交付的冷轧晶粒取向电工钢带和板材

英文名称：Magnetic materials - Part 8-7: Specifications for individual materials - Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state

发布日期：2020-09-09

标准范围

IEC 60404-8-7:20 20作为IEC 60404-8-7:20 20 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60404-8-7:20 20定义了标称厚度为0.20毫米、0.23毫米、0.27毫米、0.30毫米和0.35毫米的冷轧取向电工钢带和板材的等级。特别是，它给出了一般要求、磁性、几何特性、公差和工艺特性，以及检验程序。本文件适用于在最终退火状态下以线圈或薄板形式供应的戈斯织构晶粒取向电工钢带和薄板，用于磁路的构造。成绩分为三类:-常规等级；-高渗透等级；-磁畴细化高磁导率等级。它们对应于IEC 60404-1的C22级。与上一版相比，此版本包括以下重大技术变更:-插入用于磁畴细化的高磁导率等级的第三类晶粒取向电工钢；-引入单板试验器(SST)法作为这第三类材料的参考测量方法，以及将SST测量结果换算成等效爱泼斯坦值的换算系数；-更新电工钢系列，以考虑当前等级的供应和需求。

IEC 60404-8-7:2020 is available as IEC 60404-8-7:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60404-8-7:2020 defines the grades of cold-rolled grain-oriented electrical steel strip and sheet in nominal thicknesses of 0,20 mm, 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 three classes:
- conventional grades;
- high permeability grades;
- magnetic domain refined high permeability grades.
They correspond to Class C22 of IEC 60404-1.
This edition includes the following significant technical changes with respect to the previous edition:
- insertion of a third class of grain-oriented electrical steels for magnetic domain refined high permeability grades;
- introduction of the single sheet tester (SST) method as reference measurement method for this third class of material together with a conversion factor for transposition of the SST measurement results to equivalent Epstein values;
- update of the electrical steel range to take account of the current offers and demands of grades.

标准预览图