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

S. Steentjes, D. Franck, K. Hameyer, S. Vogt, M. Bednarz, W. Volk, J. Dierdorf, G. Hirt, V. Schnabel, H. N. Mathur, S. Korte-Kerzel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

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.

Original languageEnglish
Title of host publication2014 4th International Electric Drives Production Conference, EDPC 2014 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479950089
DOIs
StatePublished - 12 Dec 2014
Externally publishedYes
Event2014 4th International Electric Drives Production Conference, EDPC 2014 - Nuremberg, Germany
Duration: 30 Sep 20141 Oct 2014

Publication series

Name2014 4th International Electric Drives Production Conference, EDPC 2014 - Proceedings

Conference

Conference2014 4th International Electric Drives Production Conference, EDPC 2014
Country/TerritoryGermany
CityNuremberg
Period30/09/141/10/14

Keywords

  • Electrical steel
  • annealing
  • material development
  • material processing
  • punching
  • soft-magnetic material
  • tailor-made electrical steel

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