NOZZLE FOR CONTINUOUS CASTING - AKECHI CERAMICS KK

Title:

NOZZLE FOR CONTINUOUS CASTING

Document Type and Number:

Japanese Patent JP2009000737

Kind Code:

A

Abstract:

To provide a nozzle for continuous casting capable of suppressing narrowing of the inner hole of the nozzle for supplying molten metal from a tundish to a mold, further effectively suppressing clogging, and preventing cracks of the nozzle due to thermal shock.

A sheet member is inserted which is concentric with the nozzle inner hole 3, electrically insulated, and comprises a carbonaceous material containing 25 mass% or more carbon, and electricity is applied during the period from the finish of preheating to the start of casting, thereby effectively and drastically suppressing the temperature drop on the outer surface of the nozzle. The suppression of the temperature drop of the nozzle can prevent the cracks of the nozzle due to thermal shock in early stage of the casting. Moreover, the surface temperature of the nozzle is maintained at high, thereby decreasing the amount of heat transfer from the molten metal to the nozzle material and preventing the deposition of alumina due to the solidification of the molten metal.

Inventors:

KATO YOSHINARI
KIKUCHI JUN
YAMAGUCHI KAZUHIRO
FUKUNAGA SHINICHI
MATSUI TAIJIRO

Application Number:

JP2007166284A

Publication Date:

January 08, 2009

Filing Date:

June 25, 2007

Export Citation:

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