Grain oriented electrical steel sheet and method for manufacturing the same
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United States of America Patent
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Nov 10, 2015
Grant Date -
Aug 22, 2013
app pub date -
Aug 4, 2011
filing date -
Aug 6, 2010
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Abstract
A grain oriented electrical steel sheet has a total length of cracks in a film on a steel sheet surface, of 20 μm or less per 10000 μm2 of the film, wherein magnetic domain refinement interval in a rolling direction of the steel sheet, provided in magnetic domain refinement through substantially linear introduction of thermal strain from one side of the steel sheet corresponding to a winding outer peripheral side of a coiled steel sheet at a stage of final annealing in a direction intersecting the rolling direction; and deflection of 3 mm or less per unit length: 500 mm in the rolling direction of the steel sheet.
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