Abstract
A phase-field multiphase mathematical model was established using finite-element methods to simulate the formation and separation phenomena of metal droplets in the slag pool of an electroslag remelting process, and the numerical model was verified by a physical model. The effect of melting rate, steel-slag interfacial tension, slag viscosity and filling ratio on the evolutionary behavior of molten droplets was investigated. Evolution of the first molten drop was divided into three steps: formation, necking and fracturing. The fracture time of the first molten drop increased with an increase in electrode melting rate, interfacial tension and filling ratio, increased initially and then decreased with an increase in slag viscosity. The melting rate and slag viscosity had no significant effect on the shape change of the first drop in the melt droplet evolution, and the change in interfacial tension and filling ratio had a significant effect on the shape change of the melt droplet evolution. The satellite drop formation and next round of melt drops showed a good relationship with the melting rate, interfacial tension and filling ratio and no significant relationship with the slag viscosity.
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Acknowledgments
The authors express their thanks for support by the National Natural Science Foundation of China (Grant Nos. 51734003, 51822401, 52074030 and 51874027) and the Fundamental Research Funds for the Central Universities (Grant no. FRF-TP-18-009C1).
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Liu, J., Liu, W., Gao, J. et al. Analysis of Factors that Influence the Evolution of Molten Droplets During Electroslag Remelting. Metall Mater Trans B 53, 716–729 (2022). https://doi.org/10.1007/s11663-022-02447-z
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DOI: https://doi.org/10.1007/s11663-022-02447-z