摘要 A numerical model coupled with a multi-physical field based on dynamic formation of slag skin is established. After validation by comparing the experimental and simulation results of depth of metal pool, slag skin thickness and melt rate, it is utilized to investigate the effect of melt current on the coupled multi-physical field, slag skin thickness, metal pool depth and the heat flow distribution during electroslag remelting (ESR) Inconel 625 solidification process. The results showed that with the increase in the melt current, the velocities of ESR system and the temperature of metal pool increased, whereas the highest temperature of slag bath firstly decreased and then increased. With the increase in the melt current, the slag skin thickness, metal pool depth and melt rate increased. Furthermore, the characteristics of the heat flow distribution and the effect of melt current on the heat flow distribution were analysed.
Abstract：A numerical model coupled with a multi-physical field based on dynamic formation of slag skin is established. After validation by comparing the experimental and simulation results of depth of metal pool, slag skin thickness and melt rate, it is utilized to investigate the effect of melt current on the coupled multi-physical field, slag skin thickness, metal pool depth and the heat flow distribution during electroslag remelting (ESR) Inconel 625 solidification process. The results showed that with the increase in the melt current, the velocities of ESR system and the temperature of metal pool increased, whereas the highest temperature of slag bath firstly decreased and then increased. With the increase in the melt current, the slag skin thickness, metal pool depth and melt rate increased. Furthermore, the characteristics of the heat flow distribution and the effect of melt current on the heat flow distribution were analysed.
Fu-bin Liu,Xin-hao Yu,Hua-bing Li, et al. Effect of melt current on multi-physical field and heat flow distribution during ESR process based on model of dynamic formation of slag skin[J]. Journal of Iron and Steel Research International, 2023, 30(6): 1258-1267.
2023, Vol. 30 
