CONTINUOUS CASTING METHOD

摘要

PURPOSE:To prevent the clogging of the nozzle of a ladle or tundish even in the case of low-temp. casting by charging a coolant into the molten steel to be poured into the tundish and adjusting the temp. of the molten steel in the tundish in the continuous casting stage of the molten steel. CONSTITUTION:The coolant 8 is continuously charged together with the molten steel poured into the tundish 3 into the molten steel pouring path between the ladle 1 and the tundish 3 regardless of the end temp. of the refining treatment of the molten steel in the ladle 1 in the continuous casting stage of the molten steel. The molten steel temp. in the tundish 3 is thus decreased and the molten steel is cast while the overheating degree DELTAT of the molten steel expressed by the difference between the casting temp. of the molten steel and the m.p. of the molten steel itself is kept at <=25 deg.C. The overheating degree DELTAT can be adjusted to <=25 deg.C according to the above-mentioned method and therefore the casting is made possible while the molten steel temp. in the tundish within the same charge is maintained approximately constant. The purpose is thus achieved.