Numerical Modeling of Nonmetallic Inclusions Flowing Out during Solidification of Continuous Cast Steel Billets in Mould Zone

Abstract:

Developing the metallurgical purity of steel products requires, among other things, the understanding of the behavior of non-metallic inclusions (NMI) in the bulk of liquid steel in the mould zone within the forming skin of a concast billet. The identification of the mode of NMI distribution with different values of casting parameters influencing the state of the metal in the mould, including electromagnetic stirring intensity, may be of key importance to developing the metallurgical purity of concast billets being cast. The present article discusses the analysis of the results of simulation of NMI flowing out from the liquid steel volume in the mould zone of the steel continuous casting machine (CCM). As the investigation object, two different types of square cross-section mould were chosen, while for carrying out computations for two selected steel grades, a hydrodynamic module (HDM) being an extension of the FLUENT^® program was employed. The use of this module made it possible to take consideration of the influence of the EMS-M type electromagnetic stirrer on the conditions of NMI flotation and distribution in the metal volume within the mould for defined thermal – dynamical conditions.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 1385-1390
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.1385
• Online since: January 2012
• Authors: Wlodzimierz Derda, Ireneusz Staniewski
• Keywords: Continuous Casting of Steel, Distribution of Nonmetallic Inclusion, Magnetohydrodynamics Module (MHD), Numerical Modeling

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