METHOD FOR PRODUCTION OF TEXTURED SHEET FROM ELECTRICAL STEEL Russian patent published in 2019 - IPC C21D8/12 H01F1/16 C22C38/60 

Abstract RU 2698040 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy. Method includes heating of steel slab to temperature of 1,300 °C and less, hot rolling of steel slab to produce hot-rolled steel sheet, annealing of hot-rolled steel sheet in hot conditions zone, single, or double, or multiple cold rolling with intermediate annealing between them to produce cold-rolled steel sheet of final thickness, primary recrystallization annealing, application of annealing separator to surface of cold-rolled steel sheet after primary recrystallization annealing and secondary recrystallization annealing, wherein during annealing in zone of hot conditions average heating rate from ordinary temperature to 400 °C is 50 °C/s and more, and time to reach 900 °C from 400 °C is 100 s or less.

EFFECT: obtaining textured sheet from electrical steel having better magnetic properties.

1 cl, 2 dwg, 2 tbl

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RU 2 698 040 C1

Authors

Imamura Takeshi

Takashima Minoru

Ehashi Yuiko

Hayakawa Yasuyuki

Dates

2019-08-21Published

2017-03-07Filed