Water model research on decreasing the casting remnant of high quality IF steel

To solve the problems such as relatively big dead zones,insufficient flotation of inclusions and high casting remnant in tundishes when producing high quality interstitial-free (IF) steel,a series of optimizing measures were practiced in water modeling experiments. The results show that the fluid flow manifests an obvious up-ward trend using the high dam with two upward holes,the minimum residence time increases by 12.5%,and the dead zone decreases by 36%. In the end of casting,liquid steel can flow out through the holes avoiding a large amount of steel between the dames,the theoretical casting remnant declines from 9 to 4.5 t,and the metal yield increases obviously.