Research on the Effect of Slag wire on Fluid Flow in Tundish for Slab Continuous Casting

Based on the problem that slag-steel interface is strongly disturbed by the steel flow in steel impact zone thus leading to circumfluence and entrapping large inclusions into the pouring zone,installation of a slag wire in combination with original flow control devices in tundish was proposed.The effect of slag wires with different heights from the bottom and different positions from the poring zone was investigated by a water model experiment in this paper.The results show that a slag wire contributes to extending the residence time in tundish and the peak time increases by 40.9%,however,the dead zone in tundish increases by 6.2%,too.The water model experiment proved that installation of a slag wire which is 1 680 mm distance from the impact zone and 400 mm from the bottom is sufficient to suppress the dead zone in tundish and inhibit large inclusions entering the pouring zone.