Method and system for pumping molten metal

Details Method and system for pumping molten metal Method and system for pumping molten metal

2008-07-18

2010-11-30

Lin, Kuang (Department: 1793)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S337000

Reexamination Certificate

active

07841379

ABSTRACT:
Method and apparatus for pumping molten metal from a reservoir into a preferably bottom-filled mold includes a pair of graphite pump crucibles partially submerged in a reservoir of molten metal. Check valves in the bottom of each crucible enable them to be filled to the same level as the reservoir. A high pressure inert gas supply operating through a pressure regulator, forces the molten metal from one of the crucibles up a riser tube to a horizontally extending runner and through a fill port into the mold. The pressure supply is then connected to the other crucible while the first refills.

REFERENCES:
patent: 2008/0277091 (2008-11-01), Beale et al.

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