|
|
Investigation of effect of electrode polarity on electrochemistry and magnetohydrodynamics using tertiary current distribution in electroslag remelting process |
E. Karimi-Sibaki1, A. Kharicha1, A. Vakhrushev1, M. Wu2, A. Ludwig2, J. Bohacek3 |
1 Christian-Doppler Laboratory for Metallurgical Applications of Magnetohydrodynamics, Montanuniversitaet of Leoben, Leoben A-8700, Austria
2 Chair of Simulation and Modeling of Metallurgical Processes, Montanuniversitaet of Leoben, Leoben A-8700, Austria
3 Heat Transfer and Fluid Flow Laboratory, Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, 616 69 Brno, Czech Republic |
|
|
Abstract Transport phenomena including the electromagnetic, concentration of ions, flow, and thermal fields in the electroslag remelting (ESR) process made of slag, electrode, air, mold, and melt pool are computed considering tertiary current distribution. Nernst–Planck equations are solved in the bulk of slag, and faradaic reactions are regarded at the metal–slag interface. Aiming at exploring electrochemical effects on the behavior of the ESR process, the calculated field structures are compared with those obtained using the classical ohmic approach, namely, primary current distribution whereby variations in concentrations of ions and faradaic reactions are ignored. Also, the influence of the earth magnetic field on magnetohydrodynamics in the melt pool and slag is considered. The impact of the polarity of electrode, whether positive, also known as direct current reverse polarity (DCRP), or negative, as known as direct current straight polarity (DCSP), on the transport of oxygen to the ingot of ESR is investigated. The obtained modeling results enabled us to explain the experimental observation of higher oxygen content in DCSP than that of DCRP operated ESR process.
|
Received: 15 July 2021
Published: 25 December 2021
|
|
|
|
Cite this article: |
E. Karimi-Sibaki,A. Kharicha,A. Vakhrushev, et al. Investigation of effect of electrode polarity on electrochemistry and magnetohydrodynamics using tertiary current distribution in electroslag remelting process[J]. Journal of Iron and Steel Research International, 2021, 28(12): 1551-1561.
|
|
|
|
[1] |
LIU Tao1,2, CHEN Yongfeng1, ZHU Libin1, ZUO Xiaotan1, ZHANG Hongbiao1, LIU Chao3,4. Effect of alloy adjustment on corrosion resistance of steel rebar[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(2): 156-161. |
[2] |
SHEN Zhongmin1,2, GUO Jing1,2, DUAN Shengchao1,2,GUO Hanjie1,2, DUAN Ran3, LI Lianpeng4. Thermodynamic model for Al and Ti burning control of GH4706 large size electroslag ingot[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2021, 33(9): 901-910. |
[3] |
ZHU Jian1, ZHOU Wenjian1, ZHANG Zhihao1,2, XIE Jianxin1,2. Composition, microstructure and inclusion characteristics of H13 steel ingot by electroslag remelting with rare earth slag[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2021, 33(9): 966-978. |
[4] |
WANG Qiang1,2,WANG Fang3,HE Zhu1,2,LI Guangqiang1,2,LI Baokuan3. Development of numerical simulation in electroslag metallurgy[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2021, 33(8): 681-694. |
[5] |
YU Xinhao1,WANG Ao2,LIU Fubin1,JIANG Zhouhua1,LI Huabing1,GENG Xin1. Numerical simulation of effects of currents on multifield coupling behavior and solidification parameters during electroslag remelting process[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2021, 33(8): 744-751. |
[6] |
ZHAN Dongping1,QU Lexin1,WANG Dongwei1,JIANG Zhouhua1,ZHANG Huishu2. Effect of Y2O3bearing ESR slag on microstructure and properties of CLAM steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2021, 33(8): 801-806. |
|
|
|
|