Comprehensive model for a slag bath in electroslag remelting process with a current-conductive mould |
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| Authors: | Fu-bin Liu Xi-min Zang Zhou-hua Jiang Xin Geng Man Yao |
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| Institution: | 1.School of Materials and Metallurgy,Northeastern University,Shenyang,China;2.School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshang,China;3.School of Materials Science and Engineering,Dalian University of Technology,Dalian,China |
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| Abstract: | A mathematical model was developed to describe the interaction of multiple physical fields in a slag bath during electroslag
remelting (ESR) process with a current-conductive mould. The distributions of current density, magnetic induction intensity,
electromagnetic force, Joule heating, fluid flow and temperature were simulated. The model was verified by temperature measurements
during remelting 12CrMoVG steel with a slag of 50wt%–70wt% CaF2, 20wt%-30wt% CaO, 10wt%–20wt% Al2O3, and ≤10wt% SiO2 in a 600 mm diameter current-conductive mould. There is a good agreement between the calculated temperature results and the
measured data in the slag bath. The calculated results show that the maximum values of current density, electromagnetic force
and Joule heating are in the region between the corner electrodes and the conductivity element. The characteristics of current
density distribution, magnetic induction intensity, electromagnetic force, Joule heating, velocity patterns and temperature
profiles in the slag bath during ESR process with current-conductive mould were analyzed. |
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