| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for discharging molten metal having a function with which erosion of a long nozzle with the molten metal can be restrained, when the molten metal in a ladle is poured into a tundish. SOLUTION: An almost cylindrical-shaped refractory-ring 7 almost equalled with the inner diameter of a lower nozzle 5 is lined at the inside of the upper end part of the long nozzle 6, and a spherical face parts are formed on the lower end face 8 of the lower nozzle 5, and on the upper end face 9 of the refractory-ring 7, and the lower nozzle 5 and the refractory-ring 7 are contact with the spherical face. COPYRIGHT: (C)2008,JPO&INPIT
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