Molten metal gas analysis

Details Molten metal gas analysis Molten metal gas analysis

1987-03-17

1988-07-19

Levy, Stewart J.

Measuring and testing

Gas content of a liquid or a solid

By vibration

G01N 2718

Patent

active

047577070

ABSTRACT:
Apparatus for determining the concentration of a selected gas, e.g. hydrogen, nitrogen or oxygen, in molten metal of known temperature and composition (other than dissolved gases) comprises a tubular probe having an outer sheath, impermeable to the metal, constructed from a gas permeable refractory or cermet for immersion in the melt, a passageway for passing a gas of known composition through the probe such as to realize an equilibrium condition, via the sheath, with the gas dissolved in the melt and an analyzer for analyzing the equilibrated gas collected from the probe whereby to determine the concentration of the selected gas in the melt.

REFERENCES:
patent: 3451256 (1969-06-01), Kolodney
patent: 3941566 (1976-03-01), Roche
patent: 4143316 (1979-03-01), Roy et al.
patent: 4454748 (1984-06-01), Terai et al.
Degreve, F., New Methods for Determining H.sub.2 Content in Al and its Alloys, Journ. of Metals, vol. 27(3), pp. 21-26, Mar. 1975.
Takashi Ohtsubo et al, "On-Line Analysis of Hydrogen in Molten Steel", Transaction ISIJ, vol. 25, 1985, pp. B45, B46.

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