Transient melting of an ESR electrode

International Symposium on Liquid Metal Processing & Casting 2015

材料科学;金属工艺学

Kharicha, A.^1,2 ; Karimi-Sibaki, E.^1 ; Bohacek, J.^2 ; Wu, M.^1,2 ; Ludwig, A.^2

Christian-Doppler Lab for Adv. Process Simulation of Solidification and Melting, Austria^1

Department of Simulation and Modeling of Metallurgical Processes, University of Leoben, Franz-Josef-Str. 18, Leoben

A-8700, Austria^2

关键词: Computationally efficient;    Coupling interaction;    Dynamic changes;    Electrode shape;    Immersion depth;    Numerical control;    Simulation framework;    Transient melting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/143/1/012003/pdf
DOI  :  10.1088/1757-899X/143/1/012003

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Melting parameters of ESR process such as melt rate and immersion depth of electrode are of great importance. In this paper, a dynamic mesh based simulation framework is proposed to model melt rate and shape of electrode during the ESR process. Coupling interactions between turbulent flow, temperature, and electromagnetic fields are fully considered. The model is computationally efficient, and enables us to directly calculate melting parameters. Furthermore, dynamic change of electrode shape by melting can be captured. It is necessary to control the feeding velocity of electrode due to melting instabilities in the ESR process. As such, a numerical control is implemented based on the immersion depth of electrode to achieve the steady state in the simulation. Furthermore, the modeling result is evaluated against an experiment.