摘要
The influence of flow control devices on metallurgical effects in alarge-capacity tundish has been studied carefully with elements tracing, sampling and theoreticalprospecting. The results from the studies arc (1) in the continuous casting of clean steel, badcontrol of tundish operation may deteriorate the cleanliness of steel; (2) the cleanliness of steelis deteriorated mainly at the unsteady state; (3) large amount of macro inclusions come from the topslag and the refractory of tundish; (4) installing dam and weir can improve the cleanliness ofsteel and lighten the influence of steel fluctuation; and (5) the result of theoretical calculationsuggests that the inclusions larger than the critical size of 92.6 mu m can be floated out from thetundish bath completely.
The influence of flow control devices on metallurgical effects in alarge-capacity tundish has been studied carefully with elements tracing, sampling and theoreticalprospecting. The results from the studies arc (1) in the continuous casting of clean steel, badcontrol of tundish operation may deteriorate the cleanliness of steel; (2) the cleanliness of steelis deteriorated mainly at the unsteady state; (3) large amount of macro inclusions come from the topslag and the refractory of tundish; (4) installing dam and weir can improve the cleanliness ofsteel and lighten the influence of steel fluctuation; and (5) the result of theoretical calculationsuggests that the inclusions larger than the critical size of 92.6 mu m can be floated out from thetundish bath completely.
