Molten steel pouring nozzle
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United States of America Patent
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Sep 20, 1994
Grant Date -
N/A
app pub date -
Aug 20, 1993
filing date -
Sep 18, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A molten steel pouring nozzle which comprises: a nozzle body comprising an alumina-graphite refractory, having, along the axis thereof, a bore through which molten steel flows; and an outer refractory layer arranged on an outside portion of the nozzle body so as to be integral with the nozzle body and to be flush with an outer surface thereof, the outer refractory layer being arranged on a portion of the outside portion of the nozzle body, which portion is in contact, when a lower portion of the molten steel pouring nozzle is immersed into molten steel, with the open air without being immersed into the molten steel, and the outer refractory layer consisting essentially of:
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