Ladle nozzle for continuous casting having an upstream portion divergent towards a constant cross-section downstream portion

摘要

A ladle nozzle for continuous casting which allows for a reduction in the speed of injection of liquid steel between the ladle and the distributor while at the same time preserving a given flow rate. The ladle nozzle has a collar portion (1), for the connection to the casting ladle, and a tubular conduit (2). The tubular conduit (2) is made up of a first downstream portion (3) of substantially constant cross-section at the distributor end, and a second upstream portion (4) which is divergent towards the downstream region. The portions (3) and (4) are connected together in a plane where their cross sections are identical, at least on the inside. Both the portions (3) and (4) have a divergence which is substantially constant and, therefore, have the shape of truncated cones.