| 摘要 |
PURPOSE: To manufacture a low iron loss non-oriented electrical steel sheet having extremely high magnetic flux density in L and C directions, which is suitably used as an iron core for large sized generators, small sized stationary electric devices, and motors. CONSTITUTION: The method comprises a step of preparing molten steel containing 0.008 mass% or less of C, 1.8 to 7 mass% of (Si+2Al), 0.02 to 1.0 mass% of Mn, 0.005 mass% or less of S, 0.01 mass% or less of N and the balance being Fe and inevitable impurities; a step of solidifying molten steel on at least one moving cooling wall to form a casting steel strip; a step of cold rolling the casting steel strip to a predetermined thickness; and a step of annealing the cold rolled steel, wherein an intensity of the {100} plane is at least 4, and a cold reduction ratio of the cold rolling is between 70% and 85%.
|
