Patent ID: 8038806
Filing Date: 2011-10-18
Classification: C21D,C22C

Abstract:
1. Method for producing grain oriented magnetic steel strip using a continuous casting process for thin slabs, comprising the following steps: a) Melting of a steel, which beside iron and unavoidable impurities contains (in wt %) b) secondary metallurgical treatment of the molten metal in a vacuum facility and in a ladle furnace, c) continuous casting of the molten metal into a strand, d) dividing of the strand into thin slabs, e) heating of the thin slabs in a heating facility standing in a line to a temperature ranging between 1050 and 1300° C., the dwell time in the facility being 60 minutes maximum, f) continuous hot rolling of the thin slabs in a multi-stand hot rolling mill standing in a line into a hot strip having a thickness of 0.5-4.0 mm, g) cooling of the hot strip, h) reeling of the hot strip into a coil, i) cold rolling of the hot strip into cold strip having a final thickness of 0.15-0.50 mm, j) recrystallization and decarburization annealing of the cold strip, k) application of an annealing separator onto the cold strip surface, and n) final annealing of the recrystallization and decarburization annealed cold strip in order to form a Goss texture.