Measuring and testing – Gas content of a liquid or a solid – Of metal
Patent
1989-11-16
1991-07-16
Williams, Hezron E.
Measuring and testing
Gas content of a liquid or a solid
Of metal
G01N 710
Patent
active
050314440
ABSTRACT:
The invention provides a new method for the determination of the concentration of gas dissolved in a molten metal or metal matrix composite employing a new immersion head probe in apparatus employing the method. Such determinations are needed to facilitate removal of the gas, which can cause loss of desirable properties and/or bubbles in the solidified material and subsequent processing difficulties. This determination is particularly difficult with metals containing high concentrations of particulate additions, such as metal matrix composites, since it is necessary to avoid deposition of the particulates and consequent inaccurate readings. The method employs apparatus which circulates an inert carrier gas through the probe in gas exchange contact with the molten metal to entrain dissolved gas until an equilibrium mixture is obtained; the concentration of the dissolved gas in the mixture then is representative of its concentration in the molten metal. The head consists of a monolithic or integral body of a porous gas-permeable material of sufficient porosity, pore size and permeability to permit the necessary gas diffusion in a reasonable period of time. If the test is to be carried out in a stationary body of molten metal, the probe may be vibrated or the metal may be stirred.
REFERENCES:
patent: 2861450 (1958-11-01), Ransley
patent: 4257257 (1981-03-01), Dairaku et al.
patent: 4454748 (1984-06-01), Terai et al.
patent: 4757707 (1988-07-01), Harvey et al.
Doutre Don A.
Dube Ghyslain
Martin Jean-Pierre
Riverin Gaston
Alcan International Limited
Roskos Joseph W.
Williams Hezron E.
LandOfFree
Method and apparatus for the determination of gas concentration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the determination of gas concentration , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the determination of gas concentration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-122604