| 摘要 |
PURPOSE:To obtain a thin billet which has a uniform thickness and is free from lamination by forming a pouring nozzle which conducts a molten metal to surface moving molds and a vessel for a molten metal having stationary walls for regulating the width of a billet into the construction in which a part of the molten metal is discharged toward the stationary walls. CONSTITUTION:A molten metal is poured from an upper tundish 4 by a pouring nozzle 5 into a vessel 3 for a molten metal having stationary walls 2a, 2b for regulating the width of the billet within the width of surface moving molds 1a, 1b which are, for example, a pair of casting rolls. The top end of such nozzle 5 is connected to the rectangular aperture of the tundish 4 and the bottom end thereof is immersed in the molten metal in the vessel 3. The nozzle has a rectangular parallelepiped shape over the entire part and the inside thereof is divided to upper and lower passages 8, 9 by an intermediate chamber 7. The passages 8 are segmented by partition walls 10 which are parallel with each other to constitute passages for regulating flow. Sloped passages 11 are provided in the passages 9 so that a part of the molten metal flowing down in said passages is discharged toward the walls 2a, 2b. The molten metal which is regulated of flow by such passages is thus distributed uniformly in the transverse direction of the thin billet. |
