NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR PUNCHING NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND DIE FOR PUNCHING NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET
Abstract:
This non-grain-oriented electrical steel sheet is a non-grain-oriented electrical steel sheet including a silicon steel sheet as a base material, wherein the silicon steel sheet has a predetermined mechanical property depending on a direction with respect to a rolling direction, and the difference between a maximum value and a minimum value of diameters of circular holes after punching with a substantially circular die is 0.20% or less of the average value of the maximum value and the minimum value.
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