Simulation Study On Structure And Process Optimization Of Five-channel Induction Heating Tundish

The tundish process plays a key role in the quality of continuous casting billet.Tundish structure will influence the liquid steel flow performance,the continuous casting tundish induction heating can be compensated well temperature drop of molten steel,single induction heating tundish with high efficiency,uniform heating,easy to operate,the single flow of molten steel in tundish of inductive heating and heating,can offer help for the process optimization.In this paper,a 1:4 water model was established based on the prototype of a five-flow and four-channel induction heating tundish in a steel mill to study the influence of the position and liquid level of the indoor retaining wall on the flow of molten steel.A mathematical model was established,and on the basis of verifying the accuracy of the model,the effects of retaining wall position,liquid level and drawing speed on molten steel flow in the tundish were studied.The influence of heating power on the temperature of molten steel was simulated.The influence of liquid level and drawing speed on inclusion removal rate is discussed.The results show that when the distance between the retaining wall and the outlet is570 mm,the response time and peak time of the three flows tend to be the same,which are about 110 s and 400 s.When the liquid level is 350 mm and the drawing speed is 1.37m/min,the flow consistency is good,and the temperature difference of the longitudinal section of the rear cavity is less than 2K.When the pulling speed was1.37m/min,the average residence time was 761.2s,and the dead zone was 6.13%.When the liquid level increases by 50 mm,the speed of molten steel passing through the diversion hole decreases by 0.01m/s.When the heating power is 115 KW,the temperature is more uniform.When the liquid level is 350 mm and the drawing speed is 1.37m/min,the inclusion removal rate is higher.