Abstract: Channel type induction heating tundishis developed by utilizing the thermal effect and force effect of electromagnetic field. Its purpose is to achieve low superheat and constant temperature pouring and thus promoting the removal of non-metallic inclusions in molten steel. In this study, a three-dimensional mathematical model of electromagnetic induction heating tundish for channel slab continuous casting was carried out.The molten steel flow and heat transfer in slab continuous casting tundish with or without electromagnetic field were investigated under current technological conditions. The results show that the molten steel in the channels of the slab continuous casting tundish is subjected to eccentric electromagnetic force pointing to the center of the tundish under the action of electromagnetic field. The distribution of electromagnetic force is larger near the wall and smaller in the center. The eccentric electromagnetic force causes the centripetal rotational flow of molten steel in the channel. Joule heat generated by electromagnetic field mainly distributes in the latter half of the two channels. After 145 seconds of heating, the temperature of molten steel in the channels increases by 31.8 K.

Key words: electromagnetic field, Joule heating, electromagnetic force