Kornorientiertes elektromagnetisches Stahlblech mit niedrigem Eisenverlust und Verfahren zur dessen Herstellung

摘要

A low-iron-loss grain-oriented electromagnetic steel sheet is provided with the multiplicity of linear grooves formed in a surface thereof to extend in a direction substantially perpendicular to the direction of rolling of the steel sheet at a predetermined pitch in the direction of rolling, and a multiplicity of linear high dislocation density regions introduced to extend in a direction substantially perpendicular to the direction of rolling of the steel sheet at a predetermined pitch in the direction of rolling. The pitches l1 and l2 of the linear grooves and the high dislocation density regions, respectively, satisfy equations (1) and (2): $$ \mathop{\mathrm{image}}$$