Erosion resistant stopper rod

Details Erosion resistant stopper rod Erosion resistant stopper rod

1992-04-07

1993-11-09

Kastler, Scott

Metallurgical apparatus

Means sealing or opening aperture in vessel

222597, 222602, B22D 4118

Patent

active

052595960

ABSTRACT:
Erosion resistant stopper rod for steel casting having an elongated body of a first refractory material and a sleeve of a second refractory material having elevated erosion resistance characteristics. The sleeve may be copressed with the stopper rod body or separately formed and cemented thereto. The sleeve is positioned around the stopper rod in the region where contact with the slagline occurs. The erosion resistant material of the sleeve is selected from the group consisting of zirconia, magnesia, zirconia-graphite and magnesia-graphite.

REFERENCES:
patent: 1439522 (1922-12-01), Howard
patent: 1486694 (1924-03-01), Sheaffer
patent: 1776773 (1930-09-01), Arensberg
patent: 3011231 (1957-12-01), Drever
patent: 3456690 (1969-07-01), Weed
patent: 4779775 (1988-10-01), Kimura et al.
patent: 5083687 (1992-01-01), Saito et al.
Patent Abstracts of Japan, vol. 12, No. 343 (JP-A-63 104 760 to Sumitomo Metal Ind Ltd) Sep. 14, 1988.

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