Die assembly for continuous vertical casting of tubular metallic

Details Die assembly for continuous vertical casting of tubular metallic Die assembly for continuous vertical casting of tubular metallic

1976-02-09

1977-01-04

Baldwin, Robert D.

Metal founding

Means to shape metallic material

Pressure shaping means

164 85, B22D 1110

Patent

active

040007731

ABSTRACT:
A two-piece die assembly for use in continuous vertical casting of tubular metallic products from material such as bronze wherein one piece includes an outer sleeve and the other piece is an inner mandrel axially received in the sleeve, both pieces being made from graphite. In use, the sleeve is fixed to extend through the bottom wall of a crucible or furnace containing the molten metal to be cast, and for securement to the bottom of the crucible, an outwardly extending flange is provided intermediate the ends of the sleeve to underlie and engage the bottom of the crucible. The mandrel includes an upper section received in the upper end of the sleeve and a lower section having a transverse dimension less than that of the upper section to define with the sleeve a mold cavity surrounding the lower section. The upper section includes an enlarged head resting on the upper end of the sleeve and and alignment section snug fit within the upper end of the sleeve below the head so as to align the mandrel in the desired position in the sleeve. Molten metal is poured into the mold cavity through means of a plurality of passages provided through the upper section of the mandrel so as to extend from inlets in the upper surface of the head which is submerged in the molten metal in the crucible and to terminate in outlets communicating with the mold cavity.

REFERENCES:
patent: 2466612 (1949-04-01), Phillips et al.
patent: 3578065 (1971-05-01), Langer

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