Twin roll casting

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 11/06 (2006.01)

Patent

CA 2209624

A twin roll casting machine has an end dam structure at each end of the pair of rolls. Each end dam structure comprises a first part which is urged into engagement with the rolls in the vicinity of the narrowest part of the gap with a contact pressure which prevents leakage of molten metal. There is also a second part, above the first part, which is urged into engagement with the rolls with a contact pressure which is less than that of the first part but which nevertheless prevents leakage of molten metal.

La présente invention concerne un dispositif de coulée à deux cylindres pourvu d'une structure terminale à effet de barrage à chaque extrémité de la paire de cylindres. Chacune de ces structures terminales à effet de barrage comporte une première partie qui est soumise, à proximité de la partie la plus étroite de l'espace entre les cylindres, à une force de pression de contact qui l'oblige à venir au contact des cylindres ce qui permet d'éviter la fuite du métal fondu. Ladite structure à effet de barrage comporte également une seconde partie, située au-dessus de la première partie, qui est soumise à une force de pression de contact qui l'oblige à venir au contact des cylindres; cette seconde force est moins importante que celle appliquée à la première partie mais elle permet, néanmois, d'éviter la fuite du métal fondu.

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