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Title: Method and apparatus for the determination of the oxygen content of metallic baths
Claims: Having described our invention, we claim: 1. Apparatus for the determination of the quantity of oxygen dissolved in a metallic bath, comprising a probe having at its tip a hollow body, a thermometric device in said hollow body, a substance in said hollow body that reacts exothermically with oxygen dissolved in the bath to form a stable oxide, and a consumable shield comprising at least a portion of said hollow body to prevent contact between said substance and the metallic bath until after said thermometric device has reached thermal equilibrium with the bath. 2. Apparatus as claimed in claim 1, said hollow body being of refractory material having at least one opening therethrough that is closed by said shield. 3. Apparatus as claimed in claim 1, said hollow body being of refractory material having two chambers in one of which is disposed said thermometric device and said substance and in the other of which is disposed a second thermometric device for comparison, both said chambers being closed by a consumable shield. 4. Apparatus as claimed in claim 1, in which said substance is a member selected from the group consisting of calcium, magnesium, aluminum, titanium, zirconium and a rare earth metal. 5. Apparatus as claimed in claim 1, said consumable shield comprising a cup surrounding said substance. 6. Apparatus as claimed in claim 5, in which said substance is in the form of a sheath about said thermometric device. Other info: Inventors: Di Stefano, Vittorio (Rome, IT) Grimaldi, Rinaldo (Genoa, IT) Marini, Paolo (Rome, IT) Application Number: 521850 Filing Date: 1974-11-07 Publication_date: 1976-01-13 Assignee: Centro Sperimentale Metallurgico S.p.A. (Rome, IT) Primary Class(es): 422/79 75/382, 266/99 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Reese, Robert M. Assistant Examiner: Attorney: Young & Thompson |
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