Physical Modelling of Tundish Slag Entra

This paper deals with the issue of physical modelling of vortex creation and tundish slag entrainment over the mouth of the nozzle into individual casting strands. The objective is to evaluate the current conditions of steel casting using different impact pads in the tundish. A physical model equivalent to the operational continuous casting machine No. 2 in TŘINECKÉ ŽELEZÁRNY, a.s. was developed, and the physical modelling methodology along with the simulated operational conditions are described. Laboratory measurements were conducted on this physical model to determine exact critical periods for vortex creation and evaluate the impact of changes in surface level during tundish refilling. The results indicate significant correlations between the operational conditions and the occurrence of vortexes leading to slag entrainment, highlighting the importance of managing the tundish bath level to prevent the introduction of impurities into the molten steel. The findings are analyzed and discussed in the context of enhancing continuous casting processes in steel production.