Effect of electromagnetic swirling flow in slide-gate SEN on flow field in square billet continuous casting mold

Dianqiao GENG 1) , Hong LEI 1) , Jicheng HE 1) and Haitao LIU 2) 1) Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, North- eastern University, Shenyang 110819, China 2) State Key Laboratory of Rolling & Automation, Northeastern University, Shenyang 110819, China

摘 要：In order to weaken the bias flow in the submerged entry nozzle （SEN） with slide-gate, the rotating magnetic field was imposed. The numerical method was employed to investigate the effect of rotating magnetic field on the flow field in the SEN and the mold under different slide-gate opening ratios. Numerical results showed that when the slide-gate opening ratio is smaller than 100%, the flow field in the SEN and the mold become asymmetry and there is an obvious circulation under the slidegate in the SEN. With increasing exciting current, the divergent angle of liquid steel at the SEN outlet increases, the impact depth of liquid steel in the mold decreases. With increasing slide-gate opening ratio, the impact depth of liquid steel in the mold increases and the required exciting current to weaken the bias flow should increase.

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