Physical simulation and practice of molten steel fluidity in slab caster tundish

In order to improve the availability of the tundish the structural parameters of the flow control devices with different weir,dam and turbulence inhibitor was optimized to increase the retention time of the hot metal so as to remove inclusions as much as possible and improve the uniformity of temperature and compositions of the hot metal in tundish and to reduce the dead zone in the tundish and ensure a full mixture zone in an appropriate size and a plug volume zone.The present paper studies the tundish of the slab continuous caster in JISCO.A 1∶3 scale water model simulating the hot metal flowing from ladle,long nozzle to tundish is established.By measuring the RTD curves in the water model the retention time,peak time and mean residence time are obtained and by calculating these time values the structure of the tundish is optimized.