GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET

摘要

Provided is a grain-oriented electromagnetic steel sheet in which the development of side strains can be reliably inhibited and even portions where side strains have occurred can be left in the product. In the grain-oriented electromagnetic steel sheet of the present invention, a glass coating film (12) at one end side in the width direction of a steel sheet (11) has a linear modified section (14) formed as a continuous line or discontinuous broken line along the direction parallel to the rolling direction of the steel sheet and having a composition different from that of other portions of the glass coating film. The average value of angular displacement between the direction of axis of easy magnetization of crystal grains and the rolling direction at positions in the width direction of the steel sheet that correspond to the linear modified section (14), in the base metal portion of the steel sheet (11), is 0°-20°.