On the effect of material processing: microstructural and magnetic properties of electrical steel sheets

2014 4th International Electric Drives Production Conference (EDPC) Pub Date : 2014-12-15 DOI:10.1109/EDPC.2014.6984436

S. Steentjes, D. Franck, Kay Hameyer, S. Vogt, Martin Bednarz, Wolfram Volk, J. Dierdorf, Gerhard Hirt, Volker Schnabel, H. N. Mathur, S. Korte-Kerzel

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引用次数: 16

Abstract

This paper presents both the effect of cutting on the material behavior of a typical used NGO electrical steel grade M230-30A as well as a study of the effect of annealing temperature after cold rolling on microstructure and magnetic properties beginning with an industrial hot rolled 2.4 wt.% Silicon steel of 2.0mm thickness. Modifications in the local mechanical properties due to the cutting process are investigated in detail. A quantitative analysis of the impact of material degradation for non-oriented electrical steels applied in traction drives is presented. In order to consider the large speed range of drives in automotive applications and the presence of higher harmonics, this analysis is conducted for a wide range of frequencies and magnetic polarizations. Nanoindentation is used to analyze the effect of strain from cutting on the hardness near the surface. A major conclusion is that it is indispensable to take into account influences due to material processing on magnetic materials properties during the design process of electrical machines.

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对材料加工的影响:电工钢板的显微组织和磁性能

本文介绍了切削对典型使用的NGO电工钢M230-30A的材料性能的影响，以及冷轧后退火温度对显微组织和磁性能的影响，并以厚度为2.4 wt.%的工业热轧硅钢为研究对象。详细研究了切削过程对局部力学性能的影响。对牵引传动用无取向电工钢材料退化的影响进行了定量分析。为了考虑汽车应用中驱动器的大速度范围和高谐波的存在，本分析针对宽范围的频率和磁极化进行。采用纳米压痕分析了切削应变对近表面硬度的影响。一个重要的结论是，在电机的设计过程中，必须考虑材料加工对磁性材料性能的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 4th International Electric Drives Production Conference (EDPC)

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