Method of pouring molten metal from a molten metal holding and pouring box with dual pouring nozzles

摘要

A method of pouring molten metal from a molten metal holding and pouring box with a rectangular-shaped upper section and a pyramidal-shaped lower section provides a relatively constant flow of molten metal being poured from the box through each of two bottom nozzles into two separate foundry molds at the same time.

主权项

1. A method of pouring a molten metal from a volume of the molten metal in a molten metal holding and pouring box into one or more pair of molds, the molten metal holding and pouring box having an upper rectangular-shaped section and a lower pyramidal-shaped section comprising a downward sloped region extending from the upper rectangular-shaped section to a bottom region, the molten metal holding and pouring box having a unitary dual nozzle assembly located in the bottom of the lower pyramidal-shaped section, the unitary dual nozzle assembly having a pair of nozzles, the method comprising:
pouring the volume of the molten metal into the molten metal holding and pouring box through a closeable opening in the upper rectangular-shaped section; transporting one of the one or more pair of molds into a molten metal receiving relationship with the molten metal holding and pouring box; holding the unitary dual nozzle assembly at the same temperature as the volume of the molten metal in the molten metal holding and pouring box by constant contact of the unitary dual nozzle assembly with the molten metal; and pouring the molten metal from the molten metal holding and pouring box through each of the pair of nozzles in the unitary dual nozzle assembly so that 75 percent of the volume of the molten metal poured into the molten metal holding and pouring box is poured into the one of the one or more pair of molds with no more than a 30 percent decrease in the rate of flow of the molten metal.