“Power curve”key factor affecting metallurgical effects of an induction heating tundish  

作　　者：Bin Yang An-yuan Deng Peng-fei Duan Xiao-lei Kang En-gang Wang 

机构地区：[1]Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University,Shenyang 110004,Liaoning,China [2]School of Metallurgy,Northeastern University,Shenyang 110004,Liaoning,China

出　　处：《Journal of Iron and Steel Research International》2022年第1期151-164,共14页

基　　金：supported by National Natural Science Foundation of China(51474065 and 51574083);the 111 Project(2.0)of China(No.BP0719037).

摘　　要：The key to acquire good metallurgical effects with induction heating tundish is to understand the flow field,temperature field and the movement of inclusions in the tundish with different induction heating power curves.Based on the production of a factory,this work established a multi-field coupling mathematical model to find out the link between the heating power curve and the metallurgical effects of the tundish.The results indicated that the heating efficiency of an induction heating tundish not only was affected by the heating power,but also related to the flow and temperature field in the tundish.When the induction heater was used intermittently and the induction heater was turned on,the molten steel was controlled by electromagnetic force,and the flow field basically remained stable.However,when the induction heater was turned off,the velocity of molten steel got small,and the thermal buoyancy could greatly change the flow,forming short-circuit flow;besides,large number of inclusions suddenly escaped from the outlet of the tundish.When the molten steel was heated continuously,the flow field,temperature field and inclusions behavior remained basically unchanged.Considering both energy saving and maintaining good metallurgical effects,continuous heating(the power increasing stepwise over time)should be selected.

关 键 词：TUNDISH Induction heating INCLUSIONS FLOW TEMPERATURE 

分 类 号：TG14[一般工业技术—材料科学与工程]