IMMERSION NOZZLE FOR TWIN DRUM TYPE CONTINUOUS CASTING DEVICE, TWIN DRUM TYPE CONTINUOUS CASTING DEVICE, AND METHOD FOR MANUFACTURING THIN SLAB

摘要

PROBLEM TO BE SOLVED: To provide a twin drum type continuous casting device capable of making uniform the height of a supplied molten metal stored in an outer nozzle by controlling the discharging flow of the molten metal from an inner nozzle, and stably executing casing by making uniform a discharging flow from the outer nozzle to a molten metal reservoir.;SOLUTION: A twin drum type continuous casting device immersion nozzle 20 used for a twin drum type continuous casting device has: an outer nozzle 21 having a bottom shape along the longitudinal direction of a cooling drum and provided with a pressure loss structure 23 therein; and an inner nozzle 30 for supplying a molten metal into the outer nozzle 21. The side wall of the inner nozzle 30 is formed to be axially symmetrical in the longitudinal direction of the cooling drum in a section orthogonal to a tube axis, and slits 31A and 31B inclined with respect to the tube axis of the inner nozzle 30 are formed to be symmetrical at 180° in the side wall.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2017,JPO&INPIT