METHOD FOR REFINING MAGNETIC DOMAINS OF GRAIN-ORIENTED ELECTRICAL STEEL PLATES, AND APPARATUS THEREFOR

Provided is a method for refining the magnetic domains of grain-oriented electrical steel plates, so as to optimize equipment and processes and thereby increasing magnetic domain refinement efficiency, improving workability, and increasing processing capacity. The method comprises a steel plate supporting roll position controlling step for controlling the vertical position of steel plates while supporting the steel plates; a laser radiation step for radiating a laser beam so as to melt the steel plates and thereby forming grooves in the surface of the steel plates; and a configuration/maintenance step for configuring and maintaining the interior operation environment of a laser chamber in which the laser radiation is performed. 本发明提供种取向电工钢板的磁畴细化方法，对设备和工艺进行优化，以提高磁畴细化效率以及改善操作性，使得能够扩大处理能力，该方法包括：支撑钢板并控制所述钢板的上下方向位置的钢板支撑辊位置调整步骤；通过照射激光束使所述钢板熔化以在所述钢板的表面形成沟槽的激光照射步骤；以及设置及维持执行激光照射的激光室的内部操作环境的设置维持步骤。