| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grain-oriented electrical steel sheet which satisfies a demand of reduced iron loss in recent years. <P>SOLUTION: While the grain-oriented electrical steel sheet, having a tension insulating film formed after secondary recrystallization annealing, is warped like an arc surface whose rolling direction serves as a bus bar, a linear strain is introduced by a laser etc. in a direction intersecting the rolling direction of the steel sheet from a convex side of the arc. <P>COPYRIGHT: (C)2012,JPO&INPIT |
