Abstract
Based on the achievement of 2.5 m/min casting speed on Shougang Jingtang (SGJT) No. 3 slab caster, effect of casting speed on the parameters closely related to the casting conditions was discussed elaborately by plant trial, mathematical simulation and experimental study respectively. The results showed that mold level fluctuation, surface velocity, average heat flux, bulging of broad face, temperature of copper plate, solidification crater end and frictional force entirely increased while the powder consumption rate, subsurface inclusions and depth of hook structure decreased with the increase of casting speed. As a consequence, flow control mold (FC mold) was more significant to control the mold level than submerged entry nozzle (SEN) and powder B was more appropriate for high speed casting than powder A. And further, it is highly recommended that high speed casting should be considered as a potential application to improve the surface quality of cold coils.
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