Abstract
This paper presents a comprehensive computational model for the prediction of the transient Electroslag Remelting (ESR ) process for cylindrical ingots based on a two-dimensional axisymmetric analysis. The model analyzes the behavior of the slag and growing ingot during the entire ESR process involving a hot-slag start with an initial transient, near-steady melting , hot-topping and subsequent solidification of the slag and ingot after melting ends. The results of model application to an industrial ESR process for a 1.12 m diameter nickel-iron-chromium superalloy and its validation are presented. They demonstrate the comprehensive capabilities of the model in predicting the behavior of the ingot and slag during the entire process and properties of the final ingot produced. Such analysis provides significant benefits for the optimization of existing process schedules and design of new processes for different alloys and ingot sizes.
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References
Patel AD (2003) Analytical model for electromagnetic fields in ESR and VAR processes. In: Lee PD et al (ed) Proceedings of liquid metal processing and casting, pp 205–214
Patel AD, O’Connell CJ (2017) An analysis of current flow in ESR slabs. In: Krane MJM et al (ed) Proceedings liquid metals processing and casting conference, pp 199–204, Sept 2017
Dilawari AH, Szekely J (1978) Heat transfer and fluid flow phenomena in electroslag refining. Metall Trans B 9(B):77–97
Jardy J et al (1991) Magnetohydrodynamic and thermal behavior of electroslag remelting slags. Metall Trans B 22(B):111–120
Choudhury M, Szekely J (1981) Modeling of fluid flow and heat transfer in industrial-scale ESR system. Ironm Steelm 5:225–232
Kelkar KM et al (2005) Computational modeling of the electroslag remelting (ESR) process for the production of ingots of high-performance alloys. In: Lee PD et al (ed) Proceedings of liquid metal processing and casting, pp 137–144, Sept 2005
Kharicha A et al (2010) Influence of the slag/pool interface on the solidification in an electroslag remelting process. Mater Sci Forum 649:229–236
Kharicha A et al (2008) On the importance of electric currents flowing directly into the mould during an ESR process. Steel Res Int 79(8):632–636
Kharicha A et al (2014) How to get a smooth ESR ingot surface? In: Proceedings of 2nd international conference ingot casting, rolling, forging. https://www.researchgate.net/publication/263775345_How_to_get_a_smooth_ESR_Ingot_surface.pdf
Kharicha A et al (2015) Transient melting of an ESR electrode. In: Kharicha A et al (ed) Proceedings of liquid metals processing and casting, pp 111–118, Sept 2015
Weber V et al (2007) A comprehensive model of the electroslag remelting process: description and validation. In: Lee PD (ed) Proceedings 2007 international symposium on liquid metals processing and casting, pp 83:88, Sept 2007
Yanke J et al (2013) Predicting melting behavior of an industrial electroslag remelting ingot. In: Krane MJM et al (eds) Proceedings of liquid metals processing and casting, pp 47–55, Sept 2013
Fezi K et al (2013) Modeling macrosegregation during electroslag remelting of alloy 625. In: Krane MJM et al (eds) Proceedings of liquid metals processing and casting, pp 151–158, Sept 2013
Kelkar KM et al (2013) computational modeling of electroslag remelting (ESR) process used for the production of high-performance alloys. In: Krane MJM et al (eds) Proceedings of liquid metals processing and casting, pp 3–12, Sept 2013
Kharicha A et al (2011) 3D simulation of the melting during an electro-slag remelting process. EPD Congress 771–778:2011
Karimi-Sibaki E et al (2016) On validity of axisymmetric assumption for modeling an industrial scale electroslag remelting process. Adv Eng Mater 18(2):224–230
Wang X, Li Y (2015) A comprehensive 3D mathematical model of the electroslag remelting process. Metal Mat Trans 46B:1837–1849
O’Connell CJ et al (2017) Industrial-scale validation of a transient computational model for electro-slag remelting. In: Krane MJM et al (eds) Proceedings liquid metals processing and casting conference, pp 103–108, Sept 2017
MeltFlow-ESRTM Reference Manual, Innovative Research, LLC, 3025 Harbor Lane N., Suite 225, Plymouth, MN 55447 (2017). www.inresllc.com
Bertram LA (1997) Quantitative simulations of superalloy VAR ingot at the macroscale. In: Mitchell A, Aubertin P (eds) Proceedings liquid metal processing and casting, pp 110–132, AVS 1997
Siegel R, Howell JR (1981) Thermal radiation heat transfer. Hemisphere Publishing Corporation, Washington
Brent AD et al (1988) Enthalpy-porosity technique for modeling convection-diffusion phase change: application to the melting of a pure metal. Num Heat Trans 13:297–318
Yu Kuang-O (1984) Comparison of ESR-VAR processes—Part 1, Heat transfer characteristics of crucible. In: Bhat GK, Lherbier LW (eds) Proceedings vacuum metallurgy conference, pp 83–92
Auburtin P et al (2000) Freckle formation and freckle criterion in superalloy castings. Metal Mat Trans B 31(B):801–811
Patankar SV (1980) Numerical heat transfer and fluid flow. Hemisphere Publishing Corporation, Washington
Mills KC, Keene BJ (1981) Physicochemical properties of molten CaF2-based slags. Int Metals Rev 1:21–69
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Kelkar, K.M., O’Connell, C.J. (2018). A Computational Model of the Electroslag Remelting (ESR) Process and Its Application to an Industrial Process for a Large Diameter Superalloy Ingot. In: Ott, E., et al. Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-89480-5_14
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DOI: https://doi.org/10.1007/978-3-319-89480-5_14
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