CONTINUOUS CASTING PROCESS OF METAL

摘要

The present invention relates to a continuous casting process of a steel semi-product comprising: a step of casting using a hollow jet nozzle located between a tundish and a continuous casting mould, said nozzle comprising, in its upper part, a dome for deflecting the liquid metal arriving at the inlet of said nozzle towards the internal wall of the nozzle, thus defining an internal volume with no liquid metal, a simultaneous step of injection of powder through a hole of the dome, said powder having a particle size inferior to 200 mum and said dome comprising first means to inject said powder without any contact with said dome and second means to avoid sticking or sintering of said powder onto said first means.