Incidence of the Annealing Parameters on Core Losses in High Silicon (6,4% wt) - Iron Electrical Steels Obtained as much by Rapid Quenching as by Enrichment in Silicon by Means of CVD Techniques

  1. Prof. Dr. P. Neumann2,
  2. Dr. D. Allen3 and
  3. Prof. Dr. E. Teuckhoff4
  1. I. Ibarrondo and
  2. J. M. San Juan

Published Online: 5 JAN 2006

DOI: 10.1002/3527606181.ch32

Steels and Materials for Power Plants, Volume 7

Steels and Materials for Power Plants, Volume 7

How to Cite

Ibarrondo, I. and Juan, J. M. S. (2000) Incidence of the Annealing Parameters on Core Losses in High Silicon (6,4% wt) - Iron Electrical Steels Obtained as much by Rapid Quenching as by Enrichment in Silicon by Means of CVD Techniques, in Steels and Materials for Power Plants, Volume 7 (eds P. Neumann, D. Allen and E. Teuckhoff), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606181.ch32

Editor Information

  1. 2

    Max-Planck-Institut für Eisenforschung, Max-Planck-Str. 1, 40237 Düsseldorf, Germany

  2. 3

    ABB Asltom Power UK Ltd., Cambridge Road, Whetstone, Leicester LE9 GLH, United Kingdom

  3. 4

    Siemens AG, Postfach 3240, 91050 Erlangen, Germany

Author Information

  1. University of Basque Country, San Sebastian, Spain

Publication History

  1. Published Online: 5 JAN 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301959

Online ISBN: 9783527606184

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Keywords:

  • steels for power plants;
  • materials for power plant;
  • non-oriented magnetic steel sheets;
  • high silicon content (6,4% wt Si);
  • rapid solidification;
  • C.V.D.;
  • continuous annealing;
  • magnetic characteristics

Summary

This paper presents the studies carried out on high silicon (6,4% wt) - iron soft magnetic alloys obtained by rapid quenching and by silicon enrichment of conventional non-oriented magnetic steels by C.V.D. techniques.

The influence of the heat treatment parameters : atmosphere type (N2, Ar ..) and temperature annealing (900 - 1.100 °C) on grain size, texture induced and, therefore, on core losses (1,0 T, 10 - 1.000 Hz.) was studied.

From the analysis of the results it can be deduced that the amount of core losses, is in all cases, lower than that of the highest grade of conventionally processed non-oriented magnetic steel sheet, this being so especially in the range of frequencies above 50/60 Hz.

As a consequence this material is highly adequate for manufacturing cores of high-performance electrical machines working at high frequencies (≈ 400 Hz).