The magnetic torque of electromagnetic stirrer in 180 mm×240 mm mold was measured and analyzed,and the preferred frequency of electromagnetic stirring in the square mold was determined to be 3.5 Hz.The experimental results show that the optimal parameters of electromagnetic stirring in 180 mm×240 mm square mould are 280 A and 3.5 Hz by sta-tistical analysis of the central carbon segregation and the size and quantity of inclusions at specific positions of the billet.Under the condition of this parameter,the advantages of electromagnetic stirring of mold can be fully utilized,the quality of casting billet can be improved,and the involvement of large inclusions can be avoided.
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