Sms Demag Ag

Sms Siemag Aktiengesellschaft

Sms Demag, Inc.

Wilfried Milewski

Adolf Gustav Zajber

Dirk Letzel

Axel Weyer

Horst Gärtner

Thomas Fest

Lothar Fischer

Herbert Brotzki

Heinz-Dietrich Schneider

A device for continuous casting and direct deformation of a metal strand, with a strand guide which is curved after the continuous casting mold in the direction of strand travel, a spray device for liquid coolant, a bending-straightening unit, and an automatic control system for a uniform temperature field in the strand cross section. The cast strand is cooled with a liquid coolant only in the longitudinal sections in which the cast strand is liquid in the cross section. The curved strand guide with the spray device for liquid coolant is followed by a dry zone, which operates without liquid coolant and serves as insulation against the elimination of radiant heat and systematically surrounds the cast strand. A reduction line is provided, which includes individual, hydraulically adjustable deforming rolls or several hydraulically adjustable roll segments and precedes, coincides with, or follows the region of the bending-straightening unit.

Method and device for the continuous casting and direct deformation of a metal strand, especially a cast steel strand

A method and strand guide for supporting, guiding and cooling casting strands () made of steel, especially preliminary sections () for girders, which are cooled by injected water () and are drawn, serve to prevent cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand in the region of the secondary cooling, and serve to prevent undercooling of the strand shell, wherein in order to avoid an undesirable solidification structure on the upper flange edges or in other cross-sectional areas, the cooling and support of the beam blank format are so adapted to the solidification range that cooling and support are provided exclusively where a crater is formed. To this end, the casting strand () is cooled, by guiding the temperature in a specific manner in upper supporting segments (), by means of spray-water jets the width of which at least matches the length of the supporting rollers on longitudinal and transversal sides () of the cross section () of the casting strand, and is decreasingly supported in an analogous manner with respect to the length of the casting path and the cooling state in core areas () of the cross section () of the casting strand on the transversal sides () of said casting strand cross-section () so that cooling occurs exclusively by means of water jets () which are oriented towards said core areas ().

Method and strand guide for supporting, guiding and cooling casting strands made of steel, especially preliminary sections for girders

The invention relates to a method and a continuous casting device for the direct shaping of a metal strand, in particular a steel cast strand () of any format (). According to said method, the cast strand () is only cooled by a liquid coolant () in longitudinal sections (), where the interior of the cast strand () remains liquefied and the temperature of the cast strand () in a transition zone () upstream of, in and/or downstream of a bending and straightening unit () is evened out by an insulation of the exterior surface (), essentially without the use of a liquid coolant (), and by progressive thermal radiation. The cast strand () is shaped in a dynamically variable reduction section () as a result of the compressive strength that is measured on individual shaping rolls () or roll segments (), depending on the compressive force that can be locally applied.

Method and device for the continuous casting and direct shaping of a metal strand, in particular a steel cast strand

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Korschenbroich, Germany

Wilfried Milewski