| 摘要 |
PROBLEM TO BE SOLVED: To obtain a silicon steel sheet excellent in magnetic properties in an as-hot-rolled state while obviating the necessity of particular finish annealing treatment, by applying sufficient strain by hot rolling and improving a texture. SOLUTION: A steel slab, having a composition consisting of, by weight, <=0.005% C, 0.1-1.85% Si, <=1.0% Al, <=1.5% Mn, and the balance Fe with inevitable impurities, is heated and held to and at a temp. in the γ-single phase region or (α+γ) two phases region and hot rough-rolled. Successive hot finish rolling is performed under the condition of 30-80% draft at the final stand, and the resultant plate is coiled at >=600 deg.C and subjected to recrystallization self-annealing. |
