Influence of Interface Electric Field on Wettability Between Molten Iron and Submerged Entry Nozzle Interface

The study of submerged entry nozzle clogging dynamics mainly focuses on the interface wetting behavior. So as to understand the effect of the interface electric field on the wetting behavior between the immersion nozzle and the molten steel, electrowetting experiments and field industrial tests were performed. The results show that the wettability between the iron droplet and the nozzle constituent material can be improved by applying an electric field, and the solid-liquid wetting angle decreases with increasing voltage. There is an electric field at the interface between the submerged entry nozzle and molten steel during continuous casting, and the resulting electrowetting effect significantly changes the wetting behavior between the molten steel and the nozzle, which promotes the interaction between the two phases resulting in a large amount of deposits on the inner surface of the submerged entry nozzle, causing nozzle clogging.