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论文类型：期刊论文

发表时间：2012-04-01

发表刊物：INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS

收录刊物：SCIE、EI

卷号：19

期号：4

页面范围：303-311

ISSN号：1674-4799

关键字：electroslag remelting; mathematical models; slag bath; temperature distribution

摘要：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.