Republic Steel Corporation

Wci Steel Corporation

Robert E Ryan

Alexander A Zavaras

Cecil B Griffith

Robert Sobolewski

Donald O Bolger

Michael J George

A device for detecting slag in molten metal comprises a ladle shroud with a hollow passage that communicates a ladle containing the molten metal to a tundish to allow the molten metal to flow from the ladle to the tundish, and an electrically conductive element positioned in a wall of the hollow passage, so that the element is in electrical contact with the molten metal. If the ladle shroud is electrically conductive, the electrically conductive element is electrically isolated therefrom by an insulating sleeve around the electrically conductive element. Preferably, the electrically conductive element is a steel pin, particularly one where the steel pin has an flanged end in electrical contact with said molten metal, and more particularly where opposite end has a bore therein to accommodate an electrical lead wire to communicate the pin to a voltmeter. To detect the slag, the electrically conductive element is communicated to a voltmeter to compare the electrical potential of the molten metal to a ground potential. The electrical potential of the molten metal will change dramatically as the slag approaches the electrically conductive element.

Slag detecting device and method

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 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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Highland Heights, OH, United States of America

Robert E Ryan