Effect of in-mould electromagnetic stirring on the flow,initial solidification and level fluctuation in a slab mould: a numerical simulation study |
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Authors: | Yanbin Yin Bo Wang Qipeng Dong |
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Affiliation: | 1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, People’s Republic of Chinahttps://orcid.org/0000-0003-2421-0590;2. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan, People’s Republic of China;3. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, People’s Republic of China |
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Abstract: | In-mould electromagnetic stirring (M-EMS) is a widely used technique during slab continuous casting. To investigate the effect of M-EMS on the flow and initial solidification in a slab mould, a three-dimensional model coupling electromagnetic field, flow and solidification was developed. To track the steel/slag interface, the volume of fraction (VOF) model was coupled in the model. The electromagnetic force presents a centrally symmetrical distribution on the cross-section. The influences of stirring current and stirrer position on flow, initial solidification and level fluctuation have been discussed. M-EMS enhances the transversal flow and shrinks the lower recirculation in mould. The results indicate that both a higher stirring current and a lower stirrer position produce a reduction of the temperature in the mould centre. Furthermore, a higher stirrer position and a lower stirring current are favourable to the solidified shell growth. However, M-EMS aggravates the level fluctuation, which may lead to slag entrainment. |
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Keywords: | Numerical simulation M-EMS initial solidification level fluctuation flow slab continuous casting |
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