Republic Steel Corporation

Alexander A Zavaras

Robert Sobolewski

Cecil B Griffith

Robert E Ryan

Michael J George

In continuous casting of metal in an open-ended mold through which the metal is advanced in a first direction while undergoing peripheral solidification, and to which molten metal is supplied by a shroud that opens beneath the metal level, the provision of electromagnetically produced metal circulation in the mold causing laminar flow of molten metal, in a second direction opposite to the first direction and at a rate not above 35 cm./sec., along the solid-liquid interface within the mold for preventing entrapment of inclusions at the interface.

Process and apparatus for the continuous casting of metal using

In continuous casting of metal in an open-ended mold through which the metal is advanced in a first direction while undergoing peripheral solidification, and to which molten metal is supplied by a shroud that opens beneath the metal level, use of a shroud having an axial nozzle and terminating in a well beyond the nozzle, with lateral discharge ports between the well and the nozzle oriented to discharge the supplied metal at an obtuse angle to the first direction, assists in reducing the incidence of entrapped inclusions. Injection of inert gas into the flow of molten metal within the shroud promotes transport of inclusions in the second direction within the mold. The shroud and/or inert gas injection may be employed in combination with the provision of electromagnetically produced metal circulation in the mold causing flow of molten metal, in a second direction opposite to the first direction, along the solid-liquid interface within the mold for preventing entrapment of inclusions at the interface.

Continuous casting of metal using electromagnetic stirring

In continuous casting of a metal ingot which undergoes solidification progressively inwardly from its periphery while advancing through and beyond an open-ended mold, with induction stirring of the molten interior of the ingot effected by a moving magnetic field acting on the ingot throughout a stirring zone in the path of ingot advance so as to produce longitudinally directed metal flow, the applied stirring force is caused to diminish progressively and continuously toward at least one extremity of the stirring zone.

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Athens, Greece

Alexander A Zavaras