Influence of Weirs and Dams Setting on Molten Steel Flow Pattern in Tundish

According to structure and operating parameters of tundish in a steel plant,molten steel flow pattern in tundish was investigated by numerical simulation.RTD-C-curves (residual time distribution) were gained by computing transient flow in tundish.At the end of each experiment,a computer computed values of key parameters (plug volume,dead volume) from C-curve.Factors of flow modifier for fluid flow in tundish during continuous casting of slab were studied through orthogonal tests.The flow modifiers with rational design could improve fluid flow of molten steel in tundish,accelerate inclusions floating,decrease volume fraction of the dead flow.The result of simulations showed that the flow modifiers could improve flow behavior of molten steel in tundish;the flow field with No.9 flow modifier was more rational,which decreased volume fraction of dead flow obviously and resulted in evenly mixed molten steel.