| 摘要 |
PROBLEM TO BE SOLVED: To efficiently and inexpensively produce a magnetic steel sheet with stress relieving annealing under customers as the premise which combines excellent magnetic properties satisfying a high magnetic flux density and a low core loss and excellent insulation film properties. SOLUTION: In the method of producing a semiprocess nonoriented magnetic steel sheet, a stock for a nonoriented magnetic steel sheet is hot-rolled, and is thereafter subjected to rolling and annealing to form into a final cold rolled sheet, the cold rolled sheet is next annealed, is subsequently coated with an insulation coating solution, is baked, and is thereafter subjected to skinpass rolling. On the baking of the same insulation coating solution, the insulation film whose coating weight per side is 0.05 to 3.0 g/m<SP>2</SP>, and containing 10 to 60 mass% resin components is baked by induction heating, and, after that, the skinpass rolling is performed by using rolling rolls having a roll diameter of≤550 mm. COPYRIGHT: (C)2003,JPO
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