Sms Demag Ag

Sms Schloemann-siemag Aktiengesellschaft

Sms Group Gmbh

Sms Siemag Aktiengesellschaft

Sms Demag, Inc.

Dirk Letzel

Adolf Gustav Zajber

Axel Weyer

Wilfried Milewski

Thomas Fest

Horst Gärtner

Uwe Plociennik

Axel Stavenow

Jörn Hoffmeister

Lothar Fischer

Herbert Brotzki

Adolf-Gustav Zajber

Michael Dreis

Jürgen Friedrich

Andreas Naujock

Volker Mers

Ina Hüllen

Harminder Singh

Ingo OlgeMöller

Reiner K&uuml;lchen

Heinz-Dietrich Schneider

Josef Kockentiedt

Thomas Thomas Marx

Stephan Six

The invention relates to a method and to a spraying apparatus () for the thermal surface treatment of a metal product (). The metal product () is conveyed in a transport direction (T) through a treatment section () of a spraying apparatus () equipped with cooling nozzles () while cooling fluid is discharged through the cooling nozzles () of the spraying apparatus () onto the surfaces of the metal product (), wherein the metal product () has—viewed in the transport direction (T) of the metal product ()—a front section () and a trailing rear section (). The cooling of the surfaces of the metal product () within the spraying apparatus () occurs in such a manner that the rear section () of the metal product () is cooled more significantly than its front section (). It is thereby achieved that an essentially uniform ferrite content forms in the material of the metal product () at a predetermined depth of the same over a longitudinal area extending between the front section () and the rear section ().

Method and spraying apparatus for the thermal surface treatment of a metal product

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

The invention relates to a method for collecting and evacuating run-off water from the inner arc of the strand guide () of a beam blank casting machine, according to which the cast strand () is solidified and the required dissipation of heat is achieved, among other things, by sprayed water, whereby run-off water can also collect on the inner arc of the strand (). The run-off water is collected using a suction head (). The run-off water that is collected in the suction head is fluidized using fluidizers or momentum inhibitors. The fluidized water is sucked off and the water-air mixture is split into water and air in a separation device. The invention also relates to a device for carrying out said method, comprising at least one suction device that is arranged or can be driven along the strand guide (), said suction device having an attachable suction head () and being equipped with fluidizers. The suction device () is driven along the beam blank preliminary section () by means of manipulators ().

Method and device for evacuating drainage water in the inner arc of beam blank casting machines

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

Continuously cast products () are often provided with surface defects such as oscillation marks () and other non-homogeneous structures in the cast state thereof during production in a casting die () of a continuous casting plant (). Defects which render a strip useless for superior applications also frequently occur on the strip surface during subsequent milling of the slab () into a strip. The aim of the invention is to minimize said defects and provide the rolling mill with a slab () having a desired preliminary profile and an improved near-surface structure. Said aim is achieved by arranging a reducing roll stand () in the area of the bending rolls or straightening driver rolls () within the continuous casting plant (). Said reducing roll stand () allows the cast billet () to be deformed in a specific manner at an early point in time while still having a high temperature and providing a high energy yield after being completely hardened such that the depth of the existing oscillation marks () on the cast billet surface () is reduced, the finely crystalline edge layer () is enlarged as a result of the energy being released which is introduced into the reducing billet () during said deformation process, and increased recrystallization occurs and the grains in the deformed edge zone () of the slab () are refined during the subsequent thermal treatment in a holding furnace ().

Method and device for producing continuously cast steel slabs

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

In a method for changing the section of a billet of a continuous casting plant during continuous casting, wherein opposed sides of the billet are in contact with oppositely positioned roll supports arranged below a continuous casting die, wherein the roll supports are comprised of segments having rolls, wherein adjoining ones of the segments of each roll support are connected to one another by a jointed connection and wherein each segment is configured to be adjustable independent of the other segments with respect to an angular position relative to the billet, and wherein in an initial position the segments of the roll supports are adjusted to a uniform billet section, a thickness reduction can be achieved by advancing sequentially in a direction of continuous casting the segments toward the billet by moving the jointed connections toward the billet in a controlled sequence of adjusting steps or a thickness increase can be achieved by moving sequentially in a direction of continuous casting the segments away from the billet by moving the jointed connections away from the billet in a controlled sequence of adjusting steps.

Method and device for change of section of a billet of a continuous casting plant during continuous casting

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Ratingen, Germany

Dirk Letzel