Comprehensive model for a slag bath in electroslag remelting process with a current-conductive mould

• Published in: International journal of minerals, metallurgy and materials Vol. 19; no. 4; pp. 303 - 311
• Main Authors: Liu, Fu-bin, Zang, Xi-min, Jiang, Zhou-hua, Geng, Xin, Yao, Man
• Format: Journal Article
• Language: English
• Published: Beijing University of Science and Technology Beijing 01.04.2012; Springer Nature B.V; School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China%School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshang 114051, China%School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
• Subjects: Aluminum oxide; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Chromium molybdenum vanadium steels; Chromium steels; Composites; Corrosion and Coatings; Current density; Density distribution; Diameters; Electromagnetic forces; Electromagnetic induction; Electroslag remelting; Fluid flow; Glass; Heating; Joule heating; Magnetic induction; Materials Science; Mathematical models; Melting; Metallic Materials; Molds; Natural Materials; Ohmic dissipation; Resistance heating; Silicon dioxide; Slag; Slags; Surfaces and Interfaces; Temperature measurement; Temperature profiles; Thin Films; Tribology; 导电; 模具; 温度分布; 电流密度分布; 电渣重熔; 磁感应强度; 综合模型; 计算结果; slag bath; temperature distribution; mathematical models; electroslag remelting
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-012-0555-9

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% A1203, 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 comer 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.