Physical Modeling of Mold Slag Entrainment in Continuous Steel Casting Mold with Consideration the Impact of Mold Powder Layer

This paper presents the results of laboratory experiments with the usage of water model of continuous steel casting mold for slabs casting. In laboratory experiments, the liquid slag layer is replaced by silicone oil, whereas mold powder layer is replaced by polypropylene particles. The obtained results has been analyzed using a statistical method based on Taguchi assumptions. Critical casting speeds are determined depending on the viscosity of liquid mold slag. Possible mechanisms of slag entrainment are also specified. It is explained, whether taking into account in laboratory experiment the presence of mold powder layer change the entrainment conditions. Based on the obtained results and their discussion it is concluded, that the presence of mold powder should not be ignored in laboratory experiments of continuous steel casting in mold, because to a certain extent it changes the behavior and entrainment conditions of the oil layer.