Physical simulation of flow control devices in tundish

The physical model of 1∶3 was established based on the similarity theory,and the effects of dam and weir on the flow field in the tundish were investigated by orthogonal experiments.The research results showed that the space between dam and weir was the key factor influencing the flow field,and the optimum structure in the tundish was obtained as follows.The distance from weir to inlet was 1200mm,the underside of weir to bottom of tundish was 500mm,the height of dam was 360mm,and the space between weir and dam was 300mm.After optimization,the residence time of molten steel in the tundish was prolonged,the volume fraction of piston zone was increased,while the volume fraction of dead zone was decreased.