The effect of submerging depth of long nozzle (50~105 mm)

flow rate ( casting speed) ( 0.7~0.9 m

3

/h) and relative location between dam and weir in water model of 40 t tundish for double strands slab casting at steelworks on behavior of liquid flow has been studied by established 1:3 water model of tundish using the methods including illuminating the different section layer of tundish water model with laser light and adding tracer agent to display the liquid flow characteristics. Simulation results show that process design with flow rate 0.8 m

3

/h

submerging depth of long nozzle 93 mm and weir moving into dam by 1 cm is reasonable

and with the optimized process the liquid flow condition in tundish is better it is available to decrease dead zone ratio and favourable to remove inclusions from liquid and float off.