Immersible oxygen sensor for molten metals
AssigneeKeystone Sensors, LLC
InventorsAscencion Z. Villarreal, V, Paul A. Turner, Richard A Falk
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Abstract
An improved immersible oxygen probe for molten metals has a gas permeable body including an immersion end and a support end adapted for being supported by a lance. An oxygen cell and a thermocouple are supported in the immersion end of the body. An unobstructed gas flow passageway is provided through the gas permeable bodies and through the probe body from the immersion end to the support/connector end whereby gases released from the molten metal and sensor body during immersion readily pass through the probe and can escape from within the probe. Thus rapid analysis of the molten metal with improved accuracy within a few seconds after immersion is achieved.
Claims20
An immersible probe for molten metals comprising:
- a first gas permeable body having an immersion end and a support end adapted for being supported by a lance;
- at least one molten metal testing device supported by said body, the device including a test device adjacent to said immersion end for monitoring a characteristic of said metal;
- an unobstructed gas flow passageway from said immersion end through said permeable body to said support end whereby gases released from a molten metal or contained in said permeable body during immersion of said immersion end can flow from within said probe into the atmosphere, the support end having connecting means for transmitting data from said testing device to remote electronic monitoring equipment;
- and
- wherein the test device is exposed on the immersion end and is covered by an ungalvanized and uncoated steel cap having an irregular scalloped end surface that avoids formation of metal rings when melted during immersion of the probe.
An immersible probe for molten metals comprising;
- a gas permeable baked sand-resin body having an immersion end and a connection end adapted for being supported by a support pipe and containing a connector providing electrical
- communication between said probe and monitoring apparatus;
- molten metal testing devices supported in the immersion end of said body, the devices including a stabilized zirconia oxygen cell and a thermocouple, said sand-resin body and voids included therein allowing unobstructed gas flow through said immersion end, through said body and through said support end whereby gases released from a molten metal during immersion of said immersion end can enter and escape from within said probe;
- wherein the molten metal testing devices are exposed on the immersion end and are covered by an ungalvanized and uncoated steel cap having an irregular scalloped end surface that avoids formation of metal rings when melted during immersion of the probe.
An immersible probe assembly for molten metals comprising:
- a gas permeable baked sand-resin body having an immersion end and a connection end adapted for being supported by a support pipe and containing a communication connector providing electrical communication between said probe and monitoring apparatus, said communication connector having a plurality of openings retaining a heat resistant fibrous material adapted to filter impurities from gases flowing therethrough;
- a molten metal testing device supported in the immersion end of said body, the device including a stabilized zirconia oxygen cell, said sand-resin body allowing unobstructed gas flow through said immersion end, through said body and through said support end whereby gases released from a molten metal during immersion of said immersion end can enter and escape from within said probe through said filter and through said openings;
- a paperboard supporting tube adhered in gas tight fashion to a surface of said probe assembly;
- and
- wherein the molten metal testing device is exposed on the immersion end and is covered by an ungalvanized and uncoated steel cap having an irregular scalloped end surface that avoids formation of metal rings when melted during immersion of the probe.
Dependencies are inferred from the claim text.