摘要 |
An apparatus for and method of pouring molten metal from a refractory vessel (20) into the sprue (110) of a mold (100) where the vessel (20) is in contact with the sprue (110). Molten metal is poured through the orifice (52) of a nozzle (50) in the bottom (22) of the vessel (20). Laminar flow and velocity of the molten metal through the orifice (52) are controlled by a stopper (65) that extends from the orifice (52) and also displaces molten metal in the sprue (110) of the mold (100) when the stopper (65) is in the closed position to minimize excess buildup of solidified metal in the volume of the sprue (110). Filtering of dross can be accomplished in the refractory vessel (20) and heating means (45) can be provided to hold the molten metal at the appropriate temperature.
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