| 摘要 |
FIELD: metallurgy.SUBSTANCE: manufacturing method of textured electrical plate steel involves manufacture of a steel slab, in which content of inhibitor components is reduced, i.e. content of Al of 100 ppm or less and content of N, S and Se of 50 ppm respectively, hot rolling of steel, and then, one cold rolling or two or more cold rolling operations with intermediate annealing operation(s) between them to obtain a steel plate of final thickness; annealing of the steel plate for primary recrystallisation and then annealing for secondary recrystallisation; besides, annealing for the primary recrystallisation includes heating of a steel plate to the temperature that is equal or higher than 700°C, at the heating rate of at least 150°C/s, cooling of the steel plate to the temperature of 700°C or lower, and then, heating of the steel plate to the exposure temperature at average heating rate of not more than 40°C/s in the next heating zone.EFFECT: reduction of losses in steel iron.6 cl, 7 tbl, 3 dwg |
