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To guide the application of a new automated steel-teeming system which in continuous casting is controlled by electromagnetic induction technology, the parameters of the induction coil and system reliability need to be analyzed. The teeming time of an industrial ladle (1.5 t) with the new system was investigated using experimental and numerical methods. The calculated results were consistent with experimental data. The dependence of teeming efficiency on coil parameters for a larger ladle (300 t) was investigated; the influence of the electromagnetic induction system on the temperature and equivalent stress distribution in the ladle system was also analyzed. The results provided optimum coil parameters for a larger ladle normally used in continuous casting processing. An installed coil with surrounding insulating material had little influence on temperature distribution, thermal stability, and structural safety of the ladle. The ladle lining and insulation met safety requirements established for the system. The coil and the steel shell performed reliably during induction heating of steel while teeming. Therefore, the electromagnetic induction-controlled automated steel-teeming system can be safely used in steel production.

Coil Design in Electromagnetic Induction-controlled Automated Steel-teeming System and Its Effects on System Reliability