| 摘要 |
PURPOSE:To obtain a rapidly cooled thin strip having high tensile strength, low high frequency iron loss and soft magnetism by cooling rapidly a molten steel contg. specified ratios of one kind or more among prescribed contents of Si, Ti, W, Mo, Ni, Al respectively, solidifying said material to the thin strip, then cold rolling by a prescribed reduction ratio, further annealing finishedly said material. CONSTITUTION:The molten steel contg. by weight 1.0-20.0% one kind or more among 2.5-7.0% Si, 0.05-3.0% Ti, 0.05-3.0% W, 0.05-3.0% Mo, 0.1-20.0% Ni and 0.5-13.0% Al is manufactured. Next, the molten steel is supplied continuously on cooling body such as twin rolls whose cooling surface is moved renewedly and rapidly, cooled rapidly, solidified to the thin strip. Next, said strip is warm (100-600 deg.C) or cold rolled by 10-90% reduction ratio, then annealed finishedly at e.g. 950 deg.C temp. In this way, the desired titled steel strip is obtained. |
