Grain-oriented silicon steel sheets having a very low iron loss and methods for producing the same

Grain oriented silicon steel sheets having a very low iron loss W17/50 of lower than 0.90 W/kg, in which Si content is 2-4%, are produced by containing at least one of Se and S in an amount of 0.010-0.035% and at least one of Sb, As, Bi and Sn in an amount of 0.010-0.080% as inhibitor, making a fina...

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Hauptverfasser: ITO, YO, SHIMANAKA, HIROSHI, SHIMIZU, YOH, SHISHIDO
Format: Patent
Sprache:eng
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Zusammenfassung:Grain oriented silicon steel sheets having a very low iron loss W17/50 of lower than 0.90 W/kg, in which Si content is 2-4%, are produced by containing at least one of Se and S in an amount of 0.010-0.035% and at least one of Sb, As, Bi and Sn in an amount of 0.010-0.080% as inhibitor, making a final gauge to be 0.15-0.25 mm, forsterite coating formed on the steel sheet surfaces in the final annealing to be 1-4 g/m2 per one surface and a secondary crystallized grain size to be 1-6 mm.