Optimization of Power Curve in Induction Heating Tundish During Multi‐Ladle Teeming

Induction heating (IH) is widely used to compensate for the temperature drop in the tundish during continuous casting of high‐quality slabs. There has been a core challenge to achieve the low superheat and constant temperature casting due to significant temperature fluctuation under multi‐ladle teeming. In the current study, a mathematical model coupling the electromagnetic field, flow field, temperature field, and inclusion transport is established for an IH tundish. The influence of IH power is investigated, and a dynamic IH power control method is proposed. The results show that IH significantly alters the flow pattern, inducing a downward steel stream in the discharging chamber due to eccentric electromagnetic force. IH can also achieve temperature compensation; the superheat can be controlled to within ±2 K under the condition of dynamic IH power. The relationship between the variation of temperature and IH power is linear after the mean residence time is reached. Additionally, IH enhances the removal rate of inclusions, reaching up to 86.48% under the dynamic IH condition.