ORIENTED ELECTROMAGNETIC STEEL PLATE AND PRODUCTION METHOD FOR SAME

摘要

Disclosed is an oriented electromagnetic steel plate with magnetic domain refinement by laser irradiation or electron beam irradiation, which achieves excellent low-noise and low-iron loss characteristics when assembled on an existing transformer, as a result of the total tensile strength applied to the steel plate by forsterite coating and tensile strength coating being 10.0 MPa min. in the rolling direction and 5.0 MPa min. in the direction perpendicular to the rolling direction, and these total tensile strengths fulfilling the relationship in the following formula (1): 1.0=A/B=5.0 .... (1), where A is the total tensile strength from forsterite coating and tensile strength coating in the rolling direction, and B is the total tensile strength from forsterite coating and tensile strength coating in the direction perpendicular to the rolling direction.