Research Progress on Domain Refining Technology of Grain Oriented Silicon Steel
Domain refining technology is one of the important techniques in the production of grain oriented silicon steel,which can effectively reduce the core losses.The factors affecting the core loss of grain oriented silicon steel and the mechanism of iron loss reduction caused by domain refining are introduced.And the research status and principle of two types domain refining technology were reviewed.Non-heat-resistant domain refining technology was relatively mature and stable,was applied widely in industrial production.The heat-resistant domain refining technology was currently monopolized by a few enterprises.In China,high-power laser scribing technology has been only successfully developed in Baosteel.While other heat-resistant domain refining technology was currently under development in the laboratory,which cannot be applied in industrial production.Under the background of optimizing energy structure and increasing requirements of electrical equipment,more requirements were put forward for heat-resistant grain oriented silicon steel.In the future,heat-resistant domain refining technology become a key research direction of domain refining technology for grain oriented silicon steel.
grain oriented silicon steeldomain refininglaser scribingmechanical scribingcore loss
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