Method of producing silicon-iron sheet material with boron...

Details Method of producing silicon-iron sheet material with boron... Method of producing silicon-iron sheet material with boron...

C - Chemistry, Metallurgy

21

D

117/225, 148/36

C21D 9/00 (2006.01) H01F 1/04 (2006.01)

Patent

CA 1096280

Abstract of the Disclosure Addition of as little as six parts per million boron to the magnesia final anneal coating on silicon-iron strip containing only about 1.5 ppm insures secondary recrystalliza- tion while the addition of 70 ppm boron to the coating on a strip containing 10 to 15 ppm boron results in substantial reduction in losses without affecting permeability of the final product when the nitrogen content of the alloy is in the 80 to 90 ppm range.

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