Gas analyzer for molten metals
First Claim
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1. A hollow probe for immersion in a molten metal for determining the gas content thereof by drawing a vacuum on the probe and permitting gas to permeate from the molten metal and equilibrate in the probe wherein gas pressure can be measured to determine the gas pressure in the molten metal, the probe comprising:
- (a) a porous filter head permeable to gas in said molten metal and impermeable to said molten metal;
(b) a small diameter metal tube having an upper portion and a lower portion, the tube attached to said filter head at the lower portion; and
(c) said tube attached at said upper portion to means for drawing a vacuum on said tube and means for measuring gas pressure in said tube.
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Abstract
Disclosed is a probe for determining the gas content of molten metal. The probe comprises a porous filter head permeable to gas and impermeable to the molten metal and a small diameter tube having an upper portion and a lower portion, the tube attached to the filter head at the lower portion. A device for drawing a vacuum on the tube and a device for measuring gas pressure in the tube is provided.
124 Citations
11 Claims
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1. A hollow probe for immersion in a molten metal for determining the gas content thereof by drawing a vacuum on the probe and permitting gas to permeate from the molten metal and equilibrate in the probe wherein gas pressure can be measured to determine the gas pressure in the molten metal, the probe comprising:
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(a) a porous filter head permeable to gas in said molten metal and impermeable to said molten metal; (b) a small diameter metal tube having an upper portion and a lower portion, the tube attached to said filter head at the lower portion; and (c) said tube attached at said upper portion to means for drawing a vacuum on said tube and means for measuring gas pressure in said tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hollow probe for immersion in a molten metal for determining the gas content thereof by drawing a vacuum on the probe and permitting gas to permeate from the molten metal and equilibrate in the probe wherein gas pressure can be measured to determine the gas pressure in the molten metal, the probe comprising:
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(a) a porous carbon filter head permeable to gas in said molten metal and impermeable to said molten metal; (b) a small diameter steel tube having an upper portion and a lower portion, the tube; (i) attached to said carbon filter head at the lower portion, and (ii) having at its lower portion a coating that prevents chemical reaction between said steel tube and said porous carbon filter head; and (c) said tube attached at said upper portion to means for drawing a vacuum on said tube and means for measuring gas pressure in said tube.
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Specification