Analysis of Continuous Casting Powder Entrapping Phenomena by Water-model Experiments

Abstract

Mold-powder entrapping brings a serious problem of steel sheet defect caused by inclusion.
It is caused by moldmeniscus flow, immersionnozzle Argon bubble burst in mold meniscus or sacking by voltex near the immersionnozzle. The present paper studies the effect of continuous casting condition on voltex growth by the watermodel experiment.
The voltex growth is found to be strongly affected by maximun flowrate and immersionnozzle depth, and partially affected by powder viscosity.
It is found to be little affected by mold meniscus velocity and immersionnozzle shape.