caixa de contenção e vazamento de metal fundido, e, métodos para vazar um metal fundido de uma caixa de contenção e vazamento de metal fundido e para substituir um conjunto de válvula dupla unitária em uma caixa de contenção e vazamento de metal fundido

摘要

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. The two bottom nozzles are contained in a unitary dual nozzle assembly that facilitates replacement as required by wear, or a change in location of the sprue cups in the two separate foundry molds being filled with molten metal.