Process for treating molten aluminum to remove hydrogen gas and

Details Process for treating molten aluminum to remove hydrogen gas and Process for treating molten aluminum to remove hydrogen gas and

1986-09-23

1988-09-20

Nozick, Bernard

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

55 53, C22B 2100

Patent

active

047723190

ABSTRACT:
Hydrogen gas and non-metallic inclusions are removed from molten aluminum by a process comprising the steps of rendering the portion above the surface of molten aluminum in a treating vessel where the molten aluminum is placed, an atmosphere of air having a lower dew point than that of the atmosphere and maintaining it as it is, introducing a treating gas into the molten aluminum, and removing floating non-metallic inclusions and treating gas containing hydrogen gas from the surface of the melt.

REFERENCES:
patent: 3229446 (1966-01-01), Sebastian et al.
patent: 3257777 (1966-06-01), Weisse
patent: 3870511 (1975-03-01), Szekely
patent: 3917242 (1975-11-01), Bass et al.
patent: 4052199 (1977-10-01), Mangalick
patent: 4392888 (1983-07-01), Eckert et al.
patent: 4556419 (1985-12-01), Otsuka et al.
Removing Freon Gas from Hydraulic Fluid, p. 452, Nasa Tech. Brief, 1980 (winter).

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