Patent ID: 6279790
Filing Date: 2001-08-28
Classification: B22D

Abstract:
A submerged entry nozzle for use in a continuous casting process, said nozzle being employed to introduce a molten steel from a tundish into a mold:wherein at least part of portions surrounding discharge openings in said nozzle, are made of a graphite-containing refractory material containing 5 to 35 wt % graphite, 65 wt % or more of a spinel (MgO--Al.sub.2 O.sub.3), with a total content of other components being 10 wt % or less; andwherein at least part of internal wall material within the nozzle, is made of a graphite-less refractory material containing 90 wt % or more of a spinel, with a total content of other components being 10 wt % or less.