Molten metal degassing and filtering apparatus

Details Molten metal degassing and filtering apparatus Molten metal degassing and filtering apparatus

1996-03-07

1998-03-31

Andrews, Melvyn

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By providing, treating or protecting environment, e.g., vacuum

75411, 75648, 266227, C22B 902

Patent

active

057335001

ABSTRACT:
Molten metal (e.g., on its way to a continuous casting machine for forming a bar that will be rolled into a rod to be drawn down to wire) is filtered to remove particulate impurities by passing it through at least one and preferably several ceramic filters. In addition, the molten metal is degassed by injecting a flushing gas into the metal through one or more porous plugs in the bottom of the chamber through which the molten metal flows. A partial vacuum column above each porous plug is used to help pull gas up through and out of the metal.

REFERENCES:
patent: 3689048 (1972-09-01), Foulard et al.
patent: 4277281 (1981-07-01), Weber et al.
patent: 4472195 (1984-09-01), Gupta et al.
patent: 5037471 (1991-08-01), Iwamura et al.
patent: 5183486 (1993-02-01), Gatten et al.

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