Patent ID: 9713839
Date: 2017-07-25
CPC Classifications: B22D

Claim:
1. A continuous casting method for casting a solid metal by pouring a molten metal, subjected to aluminum deoxidation in a ladle, into a tundish and continuously pouring the molten metal in the tundish into a casting mold, the continuous casting method comprising: a long nozzle installation step for providing in the ladle a long nozzle extending into the tundish as a pouring nozzle for pouring the molten metal in the ladle into the tundish; a casting step for pouring the molten metal into the tundish through the long nozzle, while a spout of the long nozzle is being immersed into the molten metal, which has been poured into the tundish, and pouring the molten metal in the tundish into the casting mold; a spraying step for spraying a tundish powder so that the powder covers a surface of the molten metal in the tundish; a seal gas supply step for supplying a nitrogen gas as a seal gas around the molten metal upon which the tundish powder has been sprayed; and an addition step for adding a calcium-containing material to the molten metal in a state other than a state wherein the molten metal is retained in the tundish.