Abstract：A three-dimensional coupled numerical model of interstitial-free (IF) slab continuous casting was established based on the theory of electromagnetic thermal fluids and solidification transfer. The effects of rotating electromagnetic stirring (EMRS) with various casting speeds on the comprehensive metallurgical behaviors of electromagnetic field, flow field, heat transfer and solidification in 2 150 mm×230 mm slab mold were investigated. The results show that the minimum values of magnetic induction intensity and electromagnetic force on the central cross section of the stirrer under the action of EMRS appear in the center of the slab and the electromagnetic force vector has six vortex centers. The liquid level velocity in the mold increases as the pulling speed increases from 0.84 m/min to 1.84 m/min, and the number of vortex of electromagnetic force decreases from 6 to 4 at the stirrer's central cross-sectional position. With increasing pulling speed, the maximum impact velocity of the wide solidification front, the maximum liquid surface wave height near the narrow surface, and the impact depth of the liquid steel all increase. While the maximum impact velocity of the narrow solidification front and the thickness of the slab shell at the mold outlet decrease with the increase of pulling speed.
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2023, Vol. 42 
