METHOD FOR CONTINUOUSLY CASTING DIFFERENT KINDS OF STEEL

PROBLEM TO BE SOLVED: To provide a continuous casting method for different kinds of steel which can prevent the sticking of metal on a stopper and a nozzle at the end stage of the casting and the interruption of the casting caused by the nozzle clogging and the lowering of yield caused by the stop of continuous casting of the different kinds of steel and the raise of refractory cost related to the casting etc. SOLUTION: In the continuous casting method of the different kinds of steel, in which molten steel 3 in the previous ladle 1 is received into a tundish 4 and successively, pinch rolls 14 are worked while pouring the molten steel 3 in the tundish 4 into the mold 7 by operating the stopper 8 of the tundish 4 so as to be opened/closed and different molten steel 3a in the following ladle 1a is received into the tundish 4 and cast while drawing out the solidified cast bloom 24 at the low speed, such operations that the stopper 8 is opened to pour the molten steel quantity of 100-1000 cm /sec and immediately, the stopper 8 is closed, are alternately executed.