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US 5,358,551 AGranted
Turbulence inhibiting tundish and impact pad and method of using
AssigneeCCPI, Inc.
InventorKarl J. Saylor
Life of this patent
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AssigneeCCPI, Inc.
InventorKarl J. Saylor
Estimating the term…
A tundish and, more specifically, an impact pad is formed with a bottom impact surface and includes an outer side wall extending upwardly therefrom which fully encloses an interior space or cavity having an upper opening into which molten metal is directed from a ladle shroud. The outer side wall of the pad includes an inner surface extending from the bottom impact surface to the opening of the pad. The inner side wall surface includes an annular portion which extends inwardly and upwardly toward the opening of the pad. In the preferred embodiment, the inner side wall surface curves continuously from the bottom impact surface to a vertical wall defining the opening of the pad. The pad redirects the pouring stream back into itself causing the counter current flows to slow each other down thereby minimizing turbulence and inhibiting high velocity flow within the tundish. The upward flow is further is advantageously directed away from the incoming pouring stream toward the surface of the bath.
A tundish impact pad formed from a refractory composition capable of withstanding continuous contact with molten metal, said pad comprising a base having an impact surface and an endless outer side wall extending upwardly therefrom and fully enclosing an interior space having an upper opening for receiving a stream of said molten metal, said outer wall including an annular inner surface having at least a first portion extending inwardly and upwardly toward said opening, whereby when a downwardly directed stream of molten metal from a ladle outlet disposed above said impact pad strikes said impact surface, said stream is directed outwardly toward said annular inner surface and then redirected upwardly and inwardly toward the incoming ladle stream.
In a tundish vessel for holding a volume of molten metal and having a floor and sidewalls enclosing a region of impact and a drain, the improvement comprising an impact pad located in the region of impact and including a base having an impact surface and an endless outer side wall extending upwardly therefrom and fully enclosing an interior space having an upper opening for receiving a stream of said molten metal, said outer wall including an annular inner surface having at least a first portion extending inwardly and upwardly toward said opening, whereby when a downwardly directed stream of molten metal from a ladle outlet disposed above said impact pad strikes said impact surface, said stream is directed outwardly toward said annular inner surface and then redirected upwardly end inwardly toward the incoming ladle stream.
A method of preventing turbulence and high velocity flow of molten metal in a tundish, the method comprising the steps of:
Dependencies are inferred from the claim text.