ELECTRICAL SHEET OF EXCELLENT MAGNETIC CHARACTERISTICS AND METHOD OF MANUFACTURING THE SAME

摘要

The present invention relates to a magnetic steel sheet used for an alternating current core, and having excellent magnetic properties in both a rolling direction, and the direction perpendicular thereto, and a method of producing the magnetic steel sheet. The magnetic steel sheet is characterized in that the intensity ratio of ä100ü&lang&001&rang& orientation to random orientation of the structure of a recrystallized cold-rolled sheet is 2.0 or more, and the intensity ratio of ä011ü&lang&100&rang& orientation to random orientation thereof is 2.0 to 10.0. The intensity ratio of &lang&001&rang&//ND orientation to random orientation of the structure of a recrystallized cold-rolled sheet is preferably 2.0 or less. The method of producing a magnetic steel sheet includes hot- rolling silicon steel slab so that the intensity ratio of (015)Ä100Ü orientation to random orientation of the structure of a recrystallized hot-rolled sheet is 3.0 or more. It is effective to optimize the structure after hot rough rolling, hot finish rolling conditions, the structure of a steel sheet on the delivery side of a final stand of a hot finish rolling mill, the effective accumulated strain of a steel sheet at the entrance side of the final stand of the hot finish rolling mill, etc. <IMAGE>