A model of water-spray cooling effect on a continuous casting process

Abstract

The intention of this study is to give an idea about the influence of water-spray cooling on the solidification process of the liquid metal which enables to locate the shear region. The effect of spray heat transfer coefficient (hspray) during the liquid-to-solid transition through the cooled zone temperature and the metal latent heat of solidification are highlighted. A gray iron continuous casting process subjected to water-sprays cooling was simulated using the commercial code COMSOL MULTIPHYSICS 5.2. The obtained results show the great influence of hspray on the location of transition region as well as the relationship between hspray, wall outer temperature, latent heat dissipation, and the solidification time.

Effect of the Spin-Line Temperature Profile on the Translocation of the Solidification Point and Jet Thinning in Unconfined Melt Electrospinning

“…In order to take the phase-change process into account, instead of using the latent heat directly into the energy balance equation, the apparent heat capacity formulation was used. 29,30 In this formulation, to account for the latent heat related to the phase transition, the phase of the material in the "mushy" zone (i.e., the region of both solid and molten materials coexists in the temperature interval of…”

“…In order to take the phase-change process into account, instead of using the latent heat directly into the energy balance equation, the apparent heat capacity formulation was used. , In this formulation, to account for the latent heat related to the phase transition, the phase of the material in the “mushy” zone (i.e., the region of both solid and molten materials coexists in the temperature interval of and ) is modeled using a smoothed function, θ, representing the fraction of the phase before the transition. The density (ρ), thermal conductivity ( k ), and the specific heat capacity ( C p ) of the material are predicted as below (eqs –)­ …”

Archives of Thermodynamics

“…Water is used to cool the mould in the initial stages of solidification, and then below the mould, where it is in the direct contact with the newly solidified surface of the metal. A preliminary study presents a model of water-spray cooling effect on a continuous casting process where the effect of spraying heat transfer coefficient during the liquid-to-solid transition through the cooled zone temperature and the metal latent heat of solidification are highlighted [22]. The results obtained enables to locate the shear region.…”