Apparatus and process for countergravity casting of metal...

Details Apparatus and process for countergravity casting of metal... Apparatus and process for countergravity casting of metal...

B - Operations, Transporting

22

D

22/103, 22/74

B22D 18/06 (2006.01) B22D 18/04 (2006.01) B22D 41/00 (2006.01)

Patent

CA 2028655

This invention is directed to methods and apparatus for countergravity casting of metals, particularly reactive metals, which contain elements which are reactive at casting temperatures with air to form oxides and/or nitrides harmful to the cast product. The present invention prevents air contamination of the melt in part by providing an apparatus and method of counter-gravity casting in which means are provided for spacing the upper surface of the molten metal at a distance from a source of ambient atmosphere which is sufficient to prevent Brillion zones from drawing air down to the metal.

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