Device for measuring temperature in molten metal
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United States of America Patent
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Nov 10, 2015
Grant Date -
Sep 19, 2013
app pub date -
Mar 14, 2013
filing date -
Mar 14, 2012
priority date (Note) -
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Abstract
A device for measuring the temperature in molten metals contains a thermocouple arranged in a ceramic tube that is closed on one side, and has an external protective body that surrounds the tube, forming an annular space between the outer surface of the tube and the inner surface of the protective body. The protective body is formed of a mixture containing 75 to 90% by weight aluminum oxide, 2 to 10% by weight silicon oxide, 7 to 15% by weight graphite, 0.1 to 1% by weight Fe2O3, 0.1 to 1% by weight (K2O+Na2O), and 0.1 to 1% by weight MgO.
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