Abstract
Most conventional electroslag remelting (ESR) processes are operated with AC current, but the inductive loss of the power becomes a major problem when the process is operated at the high frequency for large scale ESR. Nowadays, the demand on large scale ingots has driven the people to think of operating the process with AC current at low frequency. Here the influence of the applied frequency of AC current on the large scale ESR process is numerically investigated. For this purpose, simulations with two operating AC frequencies (0.2 and 50 Hz) are performed. The main goal is to achieve some fundamental understanding of the two-phase flow and the formation of melt pool of the solidifying ingot under the influence of AC frequency. As we also know that the mold current (portion of electric current entering through solid slag skin into the mold) plays an important role in the process, calculations considering different current paths are also analyzed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
G. Hoyle, Electroslag Processes (London, Applied Science Publishers, 1983).
M.E. Peover, “Electroslag remelting, a review of electrical and electrochemical aspects,” J. Inst. Metals, 100 (1972), 97–106.
A. Mitchell and G. Beynon, “Electrode polarization in the DC electroslag melting of pure iron,” Met. Trans B, 10 (1971), 3333–3345.
Y. Kojima, M. Kato, T. Toyoda, and M. Inouye, “The formation of liquid droplet and behavior of oxygen in direct current electroslag remelting process,” ISIJ, 15 (1975), 397–406.
M. Etienne, “The loss of reactive elements during electroslag processing of iron-base alloys,” (Ph.D. Thesis, University of British Columbia, 1970).
G.K. Bhat and A. Mitchell, Proc. Sec. Symp. On ESR technology, Part I (1969).
G.K. Bhat and A. Mitchell, Proc. Sec. Symp. On ESR technology, Part I (1969).
B.I. Medovar, Electroslag remelting (Moscow, House of Literature on Ferrous and Nonferrous Metallurgy, 1963).
D.A. Whittaker, (Ph.D. Thesis, McMaster University, 1968).
L. Chang, X. Shi, H. Yang, Z. Li, “Effect of low-frequency AC power supply during electroslag remelting on qualities of alloy steel,” J. of Iron and Steel Research, 16 (4) (2009), 7–11.
V. Weber, A. Jardy, B. Dussoubs, D. Ablitzer, S. Ryberon, V. Schmitt, S. Hans, H. Poisson, “A comprehensive model of the electroslag remelting process: description and validation,” Proc. of LMPC, Nancy, 2007, 83–88.
Z. Jiang and Y. Dong, “Solidification model for electroslag remelting process,” Proc. of LMPC, Nancy, 2007, 89–94.
Matthew J. M. Krane, Michael Fahrmann, Jeff Yanke, Enrique Escobar de Obaldia, Kyle Fezi, and Jonathan Busch, “A comparison of predictions of transport phenomena in electroslag remelting to industrial data,” Proc. of LMPC, Nancy, 2011, 65–72.
A. Kharicha, M. Wu, A. Ludwig, B. Ofner, and H. Holzgruber, CFD Modeling and simulation in materials processing (US, Wiley publication, 2012), 139.
Q. Liang, X. Chen, H. Ren, C. Shi, and H. Guo, “Numerical simulation of electroslag remelting process for producing GH4169 under different current frequency,” Adv. Materials Research, (482–484)(2012), 1556–1565.
B. Li, F. Wang, and F. Tsukihashi, “Current, magnetic field and joule heating in electroslag remelting processes,” ISIJ Int., 52 (7) (2012), 1289–1295.
A. Kharicha, W. Schützenhöfer, A. Ludwig, and R. Tanzer, “Numerical and experimental investigations on the ESR process of the hot work tool steel H11,” Proc. of LMPC, Santa Fe, 2009, 235–242.
V. R. Voller, and C. Prakash, “A fixed grid numerical modeling methodology for convection-diffusion mushy region phase-change problems,” Int. J. Heat Mass Transfer, 30(8) (1987), 1709–1719.
A. Kharicha, W. Schützenhöfer, A. Ludwig, and R. Tanzer, “Selected numerical investigations on ESR process,” Proc. Of LMPC, Nancy, 2007, 113–119.
A. H. Dilawari, and J. Szekely, “Heat transfer and fluid flow phenomena in electroslag refining,” Metall. Trans. B, 9B (1) (1975), 77–87.
M. Choudhary, and J. Szekely, “Modeling of fluid flow and heat transfer in industrial-scale ESR system,” Ironmaking Steelmaking, 8(5) (1981), 225–239.
A. Kharicha, A. Ludwig, M. Wu, “Droplet formation in small electroslag remelting processes,” Proc. of LMPC, Nancy, 2011, 113–119.
A. Kharicha, A. Ludwig, M. Wu, “3D simulation of the melting during an industrial scale electro-slag remelting process,” Proc. of LMPC, Nancy, 2011, 41–48.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 TMS (The Minerals, Metals & Materials Society)
About this paper
Cite this paper
Sibaki, E.K. et al. (2013). A Numerical Study on the Influence of the Frequency of the Applied AC Current on the Electroslag Remelting Process. In: Krane, M.J.M., Jardy, A., Williamson, R.L., Beaman, J.J. (eds) Proceedings of the 2013 International Symposium on Liquid Metal Processing & Casting. Springer, Cham. https://doi.org/10.1007/978-3-319-48102-9_2
Download citation
DOI: https://doi.org/10.1007/978-3-319-48102-9_2
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48587-4
Online ISBN: 978-3-319-48102-9
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)