Stopper rod

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 41/18 (2006.01)

Patent

CA 2610580

A stopper rod (10) for controlling the flow of molten steel from a tundish has a metal carrier element (15a; 15b; 15c) partly received in an internal passageway (12b; 12c) of the stopper rod, the carrier element compressing sealing means (19a; 19b; 19c) between a frustoconical undersurface of a laterally enlarged portion (16,16b, 16c) thereof and a complementary seating surface of the stopper rod passageway, there being an insert (20; 24; 27c) threadedly engaged with one of the carrier element and stopper rod body (lib) at a position above a laterally enlarged portion of the carrier element (15a, 15b) , with further sealing means (21; 25; 25a, 25b) disposed between said insert and the carrier element. Preferably the insert is a nut (27c) screwed down onto a washer (26c) which compresses the further sealing means (25a, 25b).

Cette invention concerne une quenouille servant à commander le flux d'acier en fusion à partir d'un panier de coulée, cette quenouille comportant un élément transporteur de métal (15a; 15b; 15c) venant se loger partiellement dans un passage interne (12b; 12c) de la quenouille. Cet élément transporteur comprime un organe d'étanchéité (19a; 19b; 19c) entre une surface inférieure tronconique d'une partie latéralement élargie de l'élément transporteur et une surface de siège complémentaire du passage de la quenouille. A cet endroit est également prévu un insert (20; 24; 27c) qui vient se visser sur l'élément transporteur ou sur le corps de la quenouille dans une position située au-dessus d'une partie latéralement élargie de l'élément transporteur, un organe d'étanchéité supplémentaire (21; 25; 25a, 25b) étant disposé entre l'insert et l'élément transporteur. L'insert est de préférence constitué par un écrou (27c) venant se visser sur une rondelle (26c) qui comprime l'organe d'étanchéité supplémentaire (25a, 25b).

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