Mannesmann Aktiengesellschaft

Aeg-elotherm G.m.b.h.

Josef Glaser

Hans U Franzen

Fritz-Peter Pleschiutschnigg

Hans Schrewe

Lothar Parschat

Hans Gruner

Axel Von Starck

Jurgen Sardemann

Hartwig Matzner

Manfred Pfluger

Karlheinz Koch

Karl H Koch

Johannes Kurth

Hans E Gerbig

Manfred Kornet

A method of continuously casting steel in which a melt is introduced through a movable immersion nozzle. The method includes the steps of controlling the start of the casting process in connection with the withdrawal of the casting by starting the withdrawal of the casting upon reaching a desired height of the surface of the steel in the mold, and driving the casting from the mold at a desired casting removal speed via a control element in a predetermined manner. Further, the method includes measuring the position of the bath level as it ascends in the mold during the continuous casting and adjusting the position of the immersion nozzle in relation to the ascending bath level from a first position to a desired operating position by changing the position of the distributor. Lastly, the method includes determining the desired operating position of the immersion nozzle with respect to the upper edge of the mold as a function of the temperature of the steel melt, the quality of the steel, the K-value of the solidification of the casting and the bath level, so as to establish, during the casting, a spacing of the outer lower edge of the immersion nozzle between a solidification front of the casting and the bath level.

Method of continuous casting

Molten metal is discharged without slag from a ladle, vessel or the like having a closable bottom tap by weighing the vessel continuously and forming from the measuring values respective earlier and later average values as well as the difference thereof; that difference directly indicates the onset of inclusion of slag in the outflow so that the bottom top of the vessel can be closed when slag appears.

Slag retention on discharge of a ladle

One or more electromagnetic stirring elements are mounted on arms and/or holders, extending from a carriage which runs on a stationary bed and in a direction transversely to the direction of casting. The stirring elements are either directly positioned in the direction of carriage movement or orthogonally thereto. Multiphase elements can be positioned from three different directions to circumscribe the casting.

Stirring of molten metal core in a casting as withdrawn from a machine

A stream of molten metal is monitored as to emitted radiation to detect the onset of inclusion of slag for stopping the stream.

Supervising casting flow

The plug lifting structure for a stopper in a tundish is coupled, via a single, mechanical connection point, to a hydraulic actuator rod being part of the casting stand, so that removal of the tundish merely requires lowering of that rod to separate the control connection.

Control of discharge outlet of a casting vessel

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Dusseldorf, Germany

Josef Glaser