B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 41/16 (2006.01) B22D 41/50 (2006.01)
Patent
CA 2412093
A nozzle for transferring a flow of liquid metal between metallurgical vessels or molds comprising an entry portion for receiving the liquid metal. A flow regulator, such as a stopper rod, is movable from an open position to a closed position with respect to the entry portion for respectively permitting and prohibiting flow through the nozzle. The entry portion and the flow regulator define a control zone therebetween. A pressure modulator, downstream of the control zone, is adapted to minimize a pressure differential across the control zone. The pressure modulator constricts flow downstream of the control zone.
L'invention porte sur une buse servant à transférer un métal liquide entre des récipients métalliques ou des moules et comportant un orifice d'admission du métal liquide, et sur un régulateur de débit, par exemple une bielle d'arrêt, mobile entre une position d'ouverture et une position de fermeture dudit orifice, et laissant passer ou arrêtant le flux de métal traversant la buse. L'orifice d'admission et le régulateur constituent ensemble une zone de commande. L'invention porte en outre sur un modulateur de pression situé en aval de la zone de commande réduisant le différentiel de pression, entre les extrémités de la zone de commande et étranglant le flux en aval de ladite zone.
Dorricott James D.
Heaslip Lawrence J.
Xu Dong
Robic
Vesuvius Crucible Company
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