TURBULENCE INHIBITING TUNDISH AND IMPACT PAD

摘要

A tundish (10) and, more specifically, an impact pad (20) is formed with a bottom impact surface (24) and includes an outer side wall(28) extending upwardly therefrom which fully encloses an interior space or cavity (29) having an upper opening (30) into which moltenmetal (34) is directed from a ladle shroud (18), The outer side wall (28) of the pad (20) includes an inner surface (28a, 28b) extendingfrom the bottom impact surface (24) to the opening of the pad (20). The inner side wall surface includes an annular portion (28b) whichextends inwardly and upwardly toward the opening (30) of the pad (20). In the preferred embodiment, the inner side wall surface (28a,28b) curves continuously from the bottom impact surface (24) to a vertical wall (30) defining the opening of the pad (20). The pad (20)redirects the pouring stream (34) back into itself causing the counter current flows (34, 36) to slow each other down thereby minimizingturbulence and inhibiting high velocity flow within the tundish (10). The upward flow (36) is further advantageously directed away fromthe incoming pouring stream toward the surface of the bath (16).