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Influence of mechanical and water-jet cutting on the dynamic magnetic properties of NO Fe-Si steels

Authors :
Enzo Ferrara
Fausto Fiorillo
Iosif Vasile Nemoianu
Veronica Manescu
Gheorghe Paltanea
Horia Gavrila
Source :
Journal of Magnetism and Magnetic Materials. 499:166257
Publication Year :
2020
Publisher :
Elsevier BV, 2020.

Abstract

Magnetization curve and energy losses have been analyzed in non-oriented (NO) Fe-Si alloys with variable thickness (0.20 mm–0.35 mm), cut at widths ranging between 5 mm and 60 mm, in order to assess the impact of cutting, either done by punching or water-jet techniques. Measurements were performed by means of a digitally controlled single strip tester, from dc up to 1.5 kHz, at peak polarization values Jp = 1.0 T and 1.5 T. The evolution of the magnetization curve and the structure-dependent hysteresis Wh and excess Wexc loss components have been assessed as a function of the strip width using a simple phenomenological model, by which the extension of the damaged area at the edges of the cut sheets is estimated. Such a model assumes a hyperbolic dependence of the measured polarization on the cut strip width. The limiting values of Wh and Wexc for the fully damaged and the pristine sheets are in this way estimated, showing that one can simply and affordably predict the magnetic behavior of NO Fe-Si steels subjected to cutting.

Details

ISSN :
03048853
Volume :
499
Database :
OpenAIRE
Journal :
Journal of Magnetism and Magnetic Materials
Accession number :
edsair.doi...........1c62f2da2166e7494dd6f90c7cecd4c9
Full Text :
https://doi.org/10.1016/j.jmmm.2019.166257