| 摘要 |
<p>An immersed metallurgical pouring nozzle, such as a submerged entry nozzle for pouring molten steel, comprises a body (6) of refractory material, such as graphite alumina, which defines a flow passage (7). An annular member (8) 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 (6) of the nozzle is wholly encapsulated in the material of the body (6) of the nozzle. <IMAGE></p> |
