Immersed metallurgical pouring nozzles
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United States of America Patent
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Aug 12, 1997
Grant Date -
N/A
app pub date -
Apr 3, 1996
filing date -
Apr 10, 1995
priority date (Note) -
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Abstract
An immersed metallurgical pouring nozzle, such as a submerged entry nozzle for pouring molten steel, comprises a body of refractory material, such as graphite alumina, which defines a flow passage. An annular member of refractory material, such as zirconia with a very low or no-content of carbon, whose erosion resistance is higher than that of the body of the nozzle is wholly encapsulated in the material of the body of the nozzle.
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