METHOD FOR PREVENTING CLOGGING IN TUNDISH NOZZLE FOR CONTINUOUS CASTING

摘要

PURPOSE:To prevent clogging in a tundish nozzle by providing an electromagnetic stirring coil on the outside of said nozzle and stirring the molten steel passing in the nozzle forward and backward alternately at every prescribed time. CONSTITUTION:An electromagnetic stirring coil 3 is installed on the outside of a tundish nozzle 2 provided in the bottom of a tundish 1. Electric current in forward and backward direction is applied on the coil 3 at every time in a 5-30sec range to stir the molten steel under pasage through the inside of the nozzle 2 forward and backward alternately. The sticking of the inclusions in the molten steel on the wall surface of the nozzle 2 is thus obviated and the clogging in the nozzle 2 is prevented.