Simulación termofluidodinámica en un molde de colada continua de acero

Yordy González-Rondón; José Eduardo Rengel; Johnny J. Martínez

doi:10.36561/ING.21.4

Authors

Yordy González-Rondón Universidad de Oriente, Venezuela https://orcid.org/0000-0002-4769-7568
José Eduardo Rengel Universidad de Oriente, Venezuela https://orcid.org/0000-0002-4510-8846
Johnny J. Martínez Universidad de Oriente, Venezuela https://orcid.org/0000-0001-8901-9303

DOI:

https://doi.org/10.36561/ING.21.4

Keywords:

Continuous Casting Mold, Steel, Solidification, Thermofluidodynamic

Abstract

In the present study, a 3D multiphysics mathematical model was solved using the finite volumes method to predict the phenomena of fluid flow and heat transfer in a continuous casting mold of 20CrMnTi steel billets. The results showed the high cooling capacity of the system for the formation of a progressive and uniform solid layer that begins very close to the meniscus and reaches a thickness of 10 % of the section of the casting at the exit of the mold. At the exit of the SEN, the liquid steel underwent a reflux with a depth of 0.45 m measured from the meniscus. Some of the rising reflux reached the meniscus and descended, infiltrating the walls of the mold. Velocities less than 0.2 m/s, in the upper zone of the mold, and great penetration of the steel jet, in the center of the mold, were observed. It was concluded, based on what is described in the literature, the following: a) the thickness of the solidified crust, at the exit of the mold, is sufficient to avoid breakage in the piece due to the ferrostatic pressure exerted by the liquid steel, c) The fluid dynamic conditions that occur in the upper zone of the mold can be counterproductive for the transfer of heat in the meniscus and the dissipation of overheating in the steel.

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