| 摘要 |
A molten steel pouring nozzle (1) which comprises: a nozzle body (2) comprising an alumina-graphite refractory, having, along the axis thereof, a bore (3) through which molten steel flows; and an outer refractory layer (4) arranged on an outside portion of the nozzle body (2) 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: <TABLE> |
