발간논문

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Vol.41, No.2, 110 ~ 116, 2002
Title
Materials Processing : Behavior of Upper Nozzle Clogging in Continuous Casting of Steel
김성연 Seong Yeon Kim
Abstract
The characteristics of upper nozzle clogging was investigated using upper nozzle clogging index(CI_Ar) in a continuous casting of steel. CI_Ar was derived from the modified value of argon back pressure, which was dependent on the argon flow rate in upper nozzle, liquid steel throughput, and weight of liquid steel in a tundish. Inclusion attachment to and its dislodging from upper nozzle, the phenomena of which could be detected from the slow increase and the following sudden decrease of CI_Ar, was found to occur continuously for all sequences of cast in case of severe nozzle clogging.
Key Words
Upper nozzle, Clogging, Ar back pressure, Dislodging
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