Mould Level Fluctuations during Billet Casting at Hoogovens' BOS No. 1.

摘要

Mould level fluctuations at the meniscus influence the surface quality of the billet. These fluctuations, detected by the Co60 mould level detector, have been digitalized and presented as a level fluctuation number per billet cast. The influence of the tundish flow pattern and the fall-height between tundish and mould level has been investigated. A relationship between the fluctuation number and surface defects has been found. The fluctuation number can be a suitable tool for controlling and further optimizing the billet casting process.