| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively obtain a steel sheet high in 100 accumulation degree parallel to the sheet face and excellent in magnetic characteristics by hot-rolling the steel sheet of a specified composition, applying sufficient lubrication between the sheet and a roller and specifying the accumulation degree of the 100 face in the center of the thickness of the sheet and the thickness. SOLUTION: A steel sheet contg., by weight, <=0.005% C, <=7% Si, 0.05-4% Mn, <=0.1% P, <=0.05% S, <=3% Al, 0-0.01 B, 0-0.3% Sb or Sn and the balance Fe is performed to hot-rolling in which the frictional coefficient between the steel during being hot-rolled and a roller is made to <=0.2, the end temp. of finish-rolling is made to <=900 deg.C and the α-phase region is made to >=700 deg.C to obtain the hot-rolled sheet having <=1 mm thickness. After the hot-rolled sheet is pickled, continuously annealed in the α-phase region at >=800 deg.C or cold-rolled at <=50% draft, is continuously annealed in the α-phase region at >=800 deg.C. A non-oriented silicon steel sheet in which the accumulation degree of the 100} face in the center of the sheet thickness controlled is >=3 at a random ratio and having <=1 mm thickness is obtained in this way. |
