On the one hand production methodological null mass of the tropistic

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a grain-oriented electrical steel sheet excellent in film adhesiveness, especially, film-frame detachability.;SOLUTION: To the grain-oriented electrical steel sheet composed by mass% of ≤0.10% C, 2-7% Si, 0.02-0.30% Mn, 0.001-0.040% the total of one or two kinds selected between S and Se, 0.010-0.065% acid-soluble Al, 0.0030-0.0150% N, 0.001-0.1% the total of one or two kinds selected between Ce and La and the balance Fe with inevitable impurities, annealing is applied and one time or two or more times of cold-rolling, or two or more times of cold-rolling interposing intermediate annealing are applied to finish the steel sheet to have the last sheet thickness. Successively, decarburize-annealing is applied and thereafter, the primary film containing 0.01-1,000 mg/m² Ce or La, or both of Ce and La is formed, by applying the annealing-separation agent on the steel sheet surface and drying it, and performing the finish-annealing.;COPYRIGHT: (C)2008,JPO&INPIT