Long nozzle for continuous casting

Details Long nozzle for continuous casting Long nozzle for continuous casting

1997-05-16

1999-03-23

Kastler, Scott

Dispensing

Processes of dispensing

Molten metal

222603, 222606, B22D 3700

Patent

active

058854738

ABSTRACT:
The present invention relates to a long nozzle used to prevent molten steel flowing out of a collector nozzle of a sliding nozzle from being oxidized by atmospheric air when molten metal, particularly molten steel is poured from a ladle into a tundish. This nozzle has a construction comprising: (a) the long nozzle (3) made of a refractory causes molten metal to flow down from the collector nozzle (2) and the head thereof is covered by a metallic shell (16); (b) a first gas passage is provided to blow inert gas to the vicinity of a fitting portion (7) between the collector nozzle (2) and the long nozzle (3) through a first gas inlet port (8) provided on the side wall of the metallic shell (16); and (c) a second gas passage is provided to blow inert gas into an inner hole (18) of the long nozzle through a second gas inlet port (10) provided on the side wall of the metallic shell (16).

REFERENCES:
patent: 4531567 (1985-07-01), Gruner et al.
patent: 4555050 (1985-11-01), Schiefer et al.
patent: 4583721 (1986-04-01), Arakawa et al.
patent: 4854487 (1989-08-01), Ando et al.
patent: 4949885 (1990-08-01), Struble et al.

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