Method and apparatus for the protection of molten metal flows in

Details Method and apparatus for the protection of molten metal flows in Method and apparatus for the protection of molten metal flows in

1981-08-19

1984-11-06

Scherbel, David A.

Dispensing

Processes of dispensing

Molten metal

222598, 222600, 222603, B22D 4100, B22D 4108

Patent

active

044807708

ABSTRACT:
This invention relates to the protection of the teeming flow or stream of molten metal contained in a vessel and passing through a plate-type valve or cut-off device of the kind comprising a stationary plate and a displaceable plate that is provided with at least one output nozzle. A gas which is substantially inert with respect to the metal and has a pressure slightly higher than atmospheric pressure is fed into the aforesaid device, and this gas surrounds the metal while the latter passes through the said device, in such manner as to isolate the same from the ambient air by an uninterrupted protective gaseous barrier.

REFERENCES:
patent: 3673039 (1972-06-01), Todd
patent: 3887117 (1975-06-01), Fehling
patent: 3946907 (1976-03-01), Berve
patent: 4131219 (1978-12-01), Hind et al.
patent: 4178980 (1979-12-01), Gilbert et al.
patent: 4199087 (1980-04-01), Golas et al.
patent: 4203538 (1980-05-01), Luhrsen

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