Method of production of grain-oriented silicon steel sheet grain oriented electrical steel sheet and use thereof
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United States of America Patent
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Nov 28, 2017
Grant Date -
Jun 4, 2015
app pub date -
Jul 30, 2013
filing date -
Jul 31, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention is directed at a method of production gain oriented Fe—Si steel sheet presenting an induction value at 800 A/m above 1.870 Tesla and a core power loss lower than 1.3 W/kg at a specific magnetic induction of 1.7 Tesla (T). The steel chemical composition comprises, in weight percentage: 2.8≦Si≦4, 0.20≦Cu≦0.6, 0.05≦Mn≦0.4, 0.001≦Al≦0.04, 0.025≦C≦0.05, 0.005≦N≦0.02, 0.005≦Sn≦0.03, S≦0.015 and optionally Ti, Nb, V or B in a cumulated amount below 0.02, the following relationships being respected: Mn/Sn≦40, 2.0≦C/N≦5.0, Al/N≦1.20, and the balance being Fe and other inevitable impurities.
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Patent Citation Ranking
- 1 Citation Count
- H01F Class
- 24.49 % this patent is cited more than
- 8 Age
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