Process for producing oriented silicon iron from strand cast...

Details Process for producing oriented silicon iron from strand cast... Process for producing oriented silicon iron from strand cast...

C - Chemistry, Metallurgy

21

D

148/8

C21D 8/12 (2006.01)

Patent

CA 1127513

PROCESS FOR PRODUCING ORIENTED SILICON IRON FROM STRAND CAST SLABS ABSTRACT OF THE DISCLOSURE A process for producing grain oriented silicon iron from strand cast slabs having uniformly high perme- ability and low core loss, comprising the steps of melting and refining a ferrous charge to obtain a melt containing critical ranges of carbon, manganese, sulfur and/or selenium and critically low levels of nitrogen, aluminum, and titanium, casting to a slab thickness of about 125 to about 225 mm, reheating the slabs to about 1330° to about 1400°C, hot rolling, annealing at about 925° to about 1050°C, cold rolling in two stages with an intermediate anneal to final thickness, decarburizing, and subjecting the material to a final anneal in a hydrogen-containing reducing atmosphere to effect secondary recrystallization.

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