Abstract
In order to study the flow field, temperature field, and inclusion removal in a new induction heating tundish with bent channels, a three-dimensional (3D) transient mathematical model is established. The effects of both the channel radius and heating power on the multi-physical field and inclusion removal in the bent channels’ induction heating tundish are investigated. The results show that the tundish with the channel radius of 3 m shows better flow characteristics than those with the channel radii of 4 m and 2 m. With the increase of channel length, the heating efficiency increases at first, and then decreases, while the radius of 3 m is the best one for heating efficiency. After all the inclusions are placed into the tundish, the radii of 3 m and 2 m show good efficiency regarding inclusion removal, while it is poor when the radius is 4 m. Therefore, 3 m is the optimal radius of the channel in this work. Under the optimal channel radius, the heating power of 800 kW seems better than those of 600 kW and 1000 kW on flow characteristics control in the tundish. The temperature in the receiving chamber rises gradually and distributes quite uniformly with the increasing heating power, and the removal rate of inclusions increases with the increasing heating power.
Highlights
For a long time, there has been agreement that steady casting with low superheat and constant temperature is critical to improve the quality of casting slab, raise the efficiency of continuous casting production, and stabilize the continuous casting [1,2,3,4]
During the continuous casting process, the steady casting with low superheat and constant temperature will be under an unfavorable condition, which is the temperature drop of molten steel due to the heat losses caused by both the thermal radiation on the surface of the liquid steel and the heat absorption of the tundish wall, especially the inevitable great temperature drop during the initial casting stage, period of changing the steel ladle, and final casting stage
The present mathematical investigate the induction heating tundish, and the mathematical model for inclusion removal model can be used to investigate the induction heating tundish, and the mathematical model has for already been validated in our previous work [13]
Summary
There has been agreement that steady casting with low superheat and constant temperature is critical to improve the quality of casting slab, raise the efficiency of continuous casting production, and stabilize the continuous casting [1,2,3,4]. Yue et al [9] carried out numerical simulation as well as industrial experiment to study the magnetic flow and heat transfer in a twin-channel induction heating tundish. They found that there was a significant effect of electromagnetic force on the molten steel flow in the tundish, and that the flow pattern varied with Joule heating, while the electromagnetic force had little effect on it. A 3D transient mathematical model was established to research the effects of both the channel radius and heating power on the flow field, temperature field, RTD curve, and inclusion removal in the bent-channel induction heating tundish
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
