Comparative simulation study of tubular electrode and solid electrode electroslag remelting
In order to explore the influence of different electrode forms on the multi-physical field of electro-slag remelting process,the electroslag remelting system of tubular electrode and solid electrode were taken as the research object.Atwo-dimensional steady-state mathematical model coupling electromagnetic field equa-tion,energy equation and flow equation were established in the paper.The current density,Joule heat and tem-perature distribution of slag pool in the electroslag remelting system of tubular electrode and solid electrode are simulated and calculated,and the structure of metal molten pool is analyzed.The results show that,com-pared with solid electrodes,the current and Joule heat in the slag pool area of tubular electroslag remelting sys-tem mainly distribute on the outer surface of the slag pool,and the high temperature zone moves to the outer surface of the slag pool at the same time.The heat transfer form changes from the outer surface of the slag pool to the center of the slag pool with lower temperature,which makes the overall temperature of the slag pool more uniform,and the temperature gradient of the two-phase zone smaller,and the metal pool tends to be shallow and flat.
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