| 摘要 |
A grain oriented electrical steel sheet has a total length of cracks in a film on a steel sheet surface, of 20 mum or less per 10000 mum2 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. |
