BUSETTE IMMERGEE POUR COULEE CONTINUE D'ACIER FONDU

L'INVENTION CONCERNE LES BUSETTES DE COULEE CONTINUE D'ACIER.ELLE SE RAPPORTE A UNE BUSETTE AYANT UNE COUCHE REFRACTAIRE 11 CONTENANT 10,5 A 26,5 EN POIDS DE CARBONE, 70,0 A 86,0 EN POIDS DE ZIRCONE ET 0,5 A 15,0 EN POIDS DE SILICIUM ET DE FERROSILICIUM ET 3 D'IMPURETES AU MAXIMUM. SO...

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Bibliographische Detailangaben
1. Verfasser:	FUKUICHI KITANI, TATSUHITO TAKAHASHI ET MASANAO KONDO
Format:	Patent
Sprache:	fre
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
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Zusammenfassung:	L'INVENTION CONCERNE LES BUSETTES DE COULEE CONTINUE D'ACIER.ELLE SE RAPPORTE A UNE BUSETTE AYANT UNE COUCHE REFRACTAIRE 11 CONTENANT 10,5 A 26,5 EN POIDS DE CARBONE, 70,0 A 86,0 EN POIDS DE ZIRCONE ET 0,5 A 15,0 EN POIDS DE SILICIUM ET DE FERROSILICIUM ET 3 D'IMPURETES AU MAXIMUM. SON CORPS EST FORME DE REFRACTAIRE A BASE D'ALUMINE-GRAPHITE.APPLICATION A LA COULEE CONTINUE D'ACIER. 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.