NOZZLE FOR TEEMING

NOZZLE FOR TEEMING

PROBLEM TO BE SOLVED: To suppress sticking of alumina etc., on an inner hole surface of a nozzle for teeming.SOLUTION: A nozzle 11, functioning to discharge molten steel out of a container and to inject an inert gas into the molten steel, includes a through hole 5 as a gas passing path, from a gas p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KURISU JOJI, NAKANISHI TAKEO, NAKAMURA HITOSHI, TACHIKAWA KOICHI
Format: Patent
Sprache:eng
Schlagworte:
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To suppress sticking of alumina etc., on an inner hole surface of a nozzle for teeming.SOLUTION: A nozzle 11, functioning to discharge molten steel out of a container and to inject an inert gas into the molten steel, includes a through hole 5 as a gas passing path, from a gas pool 6 to a gas discharge port 4, and the gas discharge port 4 installed in a plurality of stages, wherein a through hole and a gas discharge port located on an upper side gradually and relatively increase in sectional area, and an inner hole surface 3 is uniformly coated with the discharged gas to prevent inclusions such as alumina from contacting or sticking on the inner hole surface.