磁性材料第10部分:电工钢带和电工钢片在中频下磁性的测量方法

[中文适用范围]： 本章规定了通过25 cm爱泼斯坦框架测定磁性钢片和带材的交流磁性能的一般条件。 IEC 60404的这一部分适用于晶粒取向和非取向电工钢带和片材，用于在频率范围400 Hz至10000 Hz内测量交流磁性能。 本文件的目的是定义通过爱泼斯坦框架测量电工钢带和片材磁性能的一般原则和技术细节。 25 cm爱泼斯坦框架适用于从任何质量等级的磁性电工钢带和片材中获得的扁平带试样。交流磁性能特性是针对正弦感应电压、指定的磁极化峰值和指定的频率确定的。 测量应在环境温度为（23±5）°C下进行，首先对试样进行退磁处理。 注：在本文件中，术语“磁极化”按照IEC 60050-221中的定义使用。在IEC 60404系列的一些标准中，使用了术语“磁通密度”。 [外文原描述]： IEC 60404-10:2016 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60404-10:2016(E) is applicable to grain-oriented and non-oriented electrical steel strip and sheet for measurements of a.c. magnetic properties in the frequency range 400 Hz to 10 000 Hz. The object of this document is to define the general principles and the technical details of the measurement of magnetic properties of electrical steel strip and sheet by means of an Epstein frame. This edition includes the following significant technical changes with respect to the previous edition: a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data; b) introduction of formal changes which adapt this standard to other standards of the 60404 series; c) revision of the problem of the air flux compensation taking account of the condition of the higher frequencies; d) revision of the capacitive coupling of mutual inductor windings together with the consideration of the alternative method of numerical air flux compensation. The contents of the corrigendum of March 2018 have been included in this copy.