B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 41/18 (2006.01)
Patent
CA 2351426
The present invention concerns a stopper rod whose gas tightness and rigidity are improved. In particular, the stopper rod of the present invention has means for maintaining the compression of the sealing gasket (11, 11') in contact with the annular sealing surface (10) of the body of refractory material when the stopper rod is brought to a high temperature. According to one embodiment of the invention, these means are furnished by a sleeve (12) comprised of a material with a high coefficient of thermal expansion, the dilatation of which maintains the sealing gasket under compression when the stopper rod is brought to a high temperature.
L'invention porte sur une quenouille dont l'étanchéité aux gaz et la rigidité sont améliorés, et qui comporte en particulier des moyens permettant de maintenir la compression du joint d'étanchéité (11, 11') en contact avec la surface (10) annulaire d'appui du corps de matériau réfractaire lorsque la quenouille est portée à une température élevée. Dans l'une des exécutions, lesdits moyens résident dans un manchon (12) d'un matériau à fort coefficient de dilatation, dont la dilatation maintient le joint comprimé lorsque la quenouille est portée à haute température.
Robic
Vesuvius Crucible Company
LandOfFree
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