Method and apparatus for determining soluble gas content

Details Method and apparatus for determining soluble gas content Method and apparatus for determining soluble gas content

G - Physics

01

N

354/30

G01N 7/10 (2006.01) G01N 7/14 (2006.01) G01N 33/20 (2006.01)

Patent

CA 1257000

Abstract of the Disclosure A method of determining the gas content of a body or flow of molten metal of a known alloy. The method includes the steps of providing a carrier gas and directing the same into the molten metal. The carrier gas creates in the molten metal free surfaces such that molecules of the gas content migrate to the free surfaces and accumulate in the carrier gas. The method next determines the occurrence of equilibrium between the carrier gas and the gas content in the molten metal, the magnitude of equilibrium pressure, and the temperature of the molten metal. Signals are developed representing respectively the equilibrium pressure and temperature, which signals are directed to a com- puting device. Information is also directed to the computing device that represents the solubility of the gas content in the alloy of the molten metal under test. The computing device calculates the gas content of the molten metal from the equilibrium pressure, molten metal temperature and solubility information to provide a direct and accurate readout of the gas content.

513073

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