Industrial Experimental Study on Solidification Structure Control of Oriented Silicon Steel Slab

Industrial experiments were conducted on oriented silicon steel slabs under different continuous casting process conditions to study the effects of superheat, casting speed, electric stirring parameters, and electric stirring structure on the solidification structure of the slab, and to explore effective means of regulating the solidification structure of oriented silicon steel.The results show that the equiaxed crystal rate of the billet decreases from 66.6% to 63.4% when the superheat temperature increases from 20 ℃ to 25 ℃. When the current of the stirring parameter increases from 200 A to 900 A, the equiaxial crystal rate of the billet increases from 33.3% to 66.6%. Under the conditions of drawing speed 0.9, 1.0 and 1.1 m/min, the cylindrical crystal angles are 5°, 8° and 12°, respectively. Considering the influence of drawing speed, superheat and electromagnetic stirring on solidification structure, it is considered that electromagnetic stirring is the most effective means to control solidification structure of oriented silicon steel.