A Comprehensive Model of the Electroslag Remelting Process: Description and Validation View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2009-01-14

AUTHORS

V. Weber, A. Jardy, B. Dussoubs, D. Ablitzer, S. Rybéron, V. Schmitt, S. Hans, H. Poisson

ABSTRACT

Electroslag remelting (ESR) is widely used for the production of high-value-added alloys such as special steels or nickel-based superalloys. Because of high trial costs and the complexity of the mechanisms involved, trial-and-error-based approaches are not well suited for fundamental studies or for optimization of the process. Consequently, a transient-state numerical model has been developed that accounts for electromagnetic phenomena and coupled heat and momentum transfers in an axisymmetrical geometry. The model simulates the continuous growth of the electroslag-remelted ingot through a mesh-splitting method. In addition, solidification of the metal is modeled by an enthalpy-based technique. A turbulence model is implemented to compute the motion of liquid phases (slag and metal), while the mushy zone is described as a porous medium the permeability of which varies with the liquid fraction, thus enabling accurate calculation of solid/liquid interaction. The coupled partial differential equations (PDEs) are solved using a finite-volume technique. The computed results are compared to the experimental observation of an industrial remelted ingot; the melt pool depth and shape, in particular, are investigated, in order to validate the model. These results provide valuable information about the process performance and the influence of the operating parameters. In this way, we present an example of a model used as a support in analyzing the influence of the electrode fill ratio. More... »

PAGES

271-280

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11663-008-9208-9

DOI

http://dx.doi.org/10.1007/s11663-008-9208-9

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1025600096


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210 grid-institutes:grid.13687.3b schema:alternateName ArcelorMittal, 57283, Maizières-lès-Metz, France
211 schema:name ArcelorMittal, 57283, Maizières-lès-Metz, France
212 LSG2M, Ecole des Mines de Nancy, 54042, Nancy Cedex, France
213 rdf:type schema:Organization
214 grid-institutes:grid.29172.3f schema:alternateName LSG2M, Ecole des Mines de Nancy, 54042, Nancy Cedex, France
215 schema:name LSG2M, Ecole des Mines de Nancy, 54042, Nancy Cedex, France
216 rdf:type schema:Organization
 




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