UGELLO AD IMMERSIONE PER LA COLATA CONTINUA DI ACCIAIO FUSO

An immersion nozzle for continuous casting of molten steel comprises a nozzle body comprising an alumina-graphite refractory body (10) and an erosion-resistant refractory layer (11) integral with said nozzle body and flush with the outer surface of said nozzle body at the outside portion of said noz...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TATSUHITO TAKAHASHI, MASANAO KONDO, FUKUICHI KITANI
Format:	Patent
Sprache:	ita
Schlagworte:	ARTIFICIAL STONE CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An immersion nozzle for continuous casting of molten steel comprises a nozzle body comprising an alumina-graphite refractory body (10) and an erosion-resistant refractory layer (11) integral with said nozzle body and flush with the outer surface of said nozzle body at the outside portion of said nozzle body which is in contact, when the lower portion of said immersion nozzle is immersed into molten steel (13) in a mold (12), with a molten mold powder layer (14) on the meniscus of said molten steel. The erosion-resistant refractory layer comprises from 10.5 to 26.5wt.% of Carbon; from 70.0 to 86.0wt% of Zirconia; from 0.5 to 15.0wt.% of silicon and/or ferrosilicon Up to 3wt.% of incidental impurities; and optionally 0.5 to 8.0wt.% of silicon carbide and/or amorphous silica.