| 摘要 |
PROBLEM TO BE SOLVED: To provide a double oriented silicon steel sheet having good magnetic properties and reduced variations. SOLUTION: This method of producing a double oriented silicon steel sheet includes a process in which steel containing, by mass, 0.02 to 0.20% C, 2.4 to 4.0% Si and 0.20 to 2.0% Mn is subjected to hot rolling, is next subjected to cold rolling under the condition is which the ratio between the diameter D of a work roll and the thickness(t) of the steel sheet in the process of the cold rolling (D/t) satisfies the relation of D/t>=80 or D/t>=100/t and is then subjected to annealing in an (α+γ) two-phase region under the reduced pressure with a separation material for annealing interposed between the steel sheets. |
