Abstract: As a pivotal technique in the manufacturing process of grain-oriented silicon steel, magnetic domain refinement technology has demonstrated remarkable effectiveness in reducing core loss. This paper systematically reviewed the critical factors influencing core loss in grain-oriented silicon steel and elucidated the underlying mechanisms through which domain refinement achieves loss reduction. A comprehensive analysis was conducted on the current research progress of magnetic domain refinement technologies, encompassing both domestic and international advancements. Furthermore, the article provided insightful perspectives on future development trends, addressing technical challenges and potential innovations in this field.

Key words: oriented silicon steel, refining magnetic domain, iron loss, laser scoring