Intended for electrical engineering applications was oriented electrical steel strip or sheet production method of

摘要

The present invention is a method for producing directional electrical steel strips or sheets, wherein (by weight) Si: 2 to 6.5%, C: 0.02 to 0.15%, S: 0.01 to 0 0.1%, Cu: 0.1-0.5%, Cu to S content ratio is% Cu /% S 4, Mn: up to 0.1%, Mn to S content The ratio is% Mn /% S 2.5, and the slab temperature of a thin slab made of steel with any content of N, Al, Ni, Cr, Mo, Sn, V, Nb is uniformly 1000-1200 ° C. This thin slab has an initial hot rolling temperature of 1030 ° C. and a final hot rolling temperature of ≧ 710 ° C. and a thickness reduction of ≧ 40% in both the first and second hot forming passes. Accompanied by hot rolling to a hot strip having a thickness of 0.5-4.0 mm, cooling the hot strip, Scraping into a coil, cold rolling the hot strip into a cold strip having a final thickness of 0.15-0.50 mm, applying an annealing separator on the annealed cold strip, and a cold strip with this annealing separator The present invention relates to a method of forming a goth texture by performing the final annealing. [Selection figure] None