| 摘要 |
PURPOSE:To reduce generation of cracks on a silicon steel sheet remarkably and to increase a yield by heating only the front end part of a strip above a specific temperature just before winding and winding the strip on a gripper type tension reel. CONSTITUTION:When a silicon steel sheet 3 containing 3% or more Si is wound on a gripper type tension reel 1, the front end part of the plate 3 is heated in a heating furnace 9 just before the winding. As for the front end part of the sheet 3 gripped by the reel 1, the temperature of about 1m length from the front end being equivalent to about 3/4 turn of the reel is kept above 100 deg.C; the temperature of the remainder is kept at 50-60 deg.C. The heating furnace 9 employs a heating means by a burner heating with town gas or be an induction heating. By this method, generation of cracks on the sheet 3 is preventable.
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