United States Steel Corporation

Uss Engineers and Consultants, Inc.

Joseph W Cudby

Robert Duncan Hind

Nicholas Syred

Anthony Thrower

Christopher F King

Flaring, splashing and spitting of the molten metal flow stream issuing from a flow control nozzle of the type forming the collector nozzle of a sliding plate valve is prevented by forming the flow passage through the nozzle with a flow-impeding constriction intermediate the ends thereof. The passage is also provided with a duct section downstream of the constriction and includes means for preventing recirculatory currents in the flow stream from entering and passing the constriction.

Fluted,-stepped, pour nozzle

Oxidation of a molten metal pour stream is prevented by enclosing the stream in a shroud formed by one or more jets of inert gas arranged to envelope the stream.

Pouring of molten metals

A sliding gate valve assembly adapted for use in the pouring of metals comprises a sliding gate member arranged for sliding movement to open and close an orifice of the assembly through which orifice metal is arranged to flow; the sliding gate member comprises a refractory body in which is provided a nozzle aligned with the orifice in an open position of the gate member and offset from the orifice in a closed position of the gate member; the nozzle has a side wall portion of permeable refractory material; and gas, e.g. an inert gas or oxygen is supplied to the nozzle, through the permeable side wall portion.

Growing community of inventors

Sheffield, United Kingdom

Joseph W Cudby