Effect of melt current on multi-physical field and heat flow distribution during ESR process based on model of dynamic formation of slag skin

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 t...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 30; no. 6; pp. 1258 - 1267
Main Authors Liu, Fu-bin, Yu, Xin-hao, Li, Hua-bing, Jiang, Zhou-hua, Zhu, Hong-chun, Geng, Xin
Format Journal Article
LanguageEnglish
Published Singapore Springer Nature Singapore 01.06.2023
Subjects
Applied and Technical Physics
Engineering
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Original Paper
Physical Chemistry
Processes
Model
Melt current
Slag skin
Multi-physical field
Electroslag remelting
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Summary: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.
ISSN:1006-706X
2210-3988
DOI:10.1007/s42243-023-00976-8