Combining contactless inductive flow tomography and mutual inductance tomography for two-phase flow measurements at a continuous casting model

摘要

The flow structure in the mould of a continuous caster is of key importance for the quality of the final product.The use of most conventional flow measurement techniques is prevented by the high temperature of the liquid steel.For a downscaled physical model of the continuous casting process,we present combined measurements of the flow in the mould by Contactless Inductive Flow Tomography(CIFT),and of the conductivity distribution in the submerged entry nozzle by Mutual Inductance Tomography(MIT).In addition,we summarize an experiment with a magnetic stirrer around the submerged entry nozzle and its effects on the flow in the mould.Some new developments towards a robust implementation of CIFT at a real caster,including the use of pickup coils and gradiometric probes,are also discussed.