The effect of shearing on iron loss and domain structure of non-oriented electrical steel was studied. From the hardness distribution in the vicinity of sheared edge, the iron loss increase due to plastic strain introduced by sharing was estimated to be 1/3 of the actual loss deterioration. The remaining 2/3 was considered to occur in the region where the width was about twice the sheet thickness, where the domain pattern was influenced by the shearing. Cross-sectional domain patterns in the vicinity of sheared edge were found to be categorized into three types depending on the distance from the edge.
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