Patent ID: 8778258

Claim:
A tundish nozzle used in a device for exchanging tundish nozzles juxtaposed at a bottom of a tundish, the device including: a pair of first arms pressing and supporting a first lower nozzle, the first lower nozzle located at an undersurface of a first upper nozzle, the first upper nozzle placed at the bottom of the tundish, and a pair of second arms pressing and supporting a second lower nozzle, the second lower nozzle located at an undersurface of a second upper nozzle, the second upper nozzle placed at the bottom of the tundish and next to the first upper nozzle, the pair of first arms and the pair of second arms are adjoined to each other, and the pairs are at least partly overlapped each other, the tundish nozzle comprising: a zirconia based nozzle inserted into an alumina based refractory, wherein the tundish nozzle is one of the first lower nozzle, the first upper nozzle, the second lower nozzle, and the second upper nozzle.