Sms Demag Ag

Sms Schloemann-siemag Aktiengesellschaft

Other

Mannesmann Aktiengesellschaft

Sms Siemag Aktiengesellschaft

Sms Demag, Inc.

Sms Group Gmbh

Primetals Technologies Austria Gmbh

Adolf Gustav Zajber

Axel Weyer

Uwe Plociennik

Thomas Fest

Dirk Letzel

Wilfried Milewski

Lothar Fischer

Herbert Brotzki

Martin Becker

Rudolf Hoffmann

Gerhard Arnolds

Horst Gärtner

Herbert Hansen

Erich Willems

Siegbert Schwenecke

Heinz-Dietrich Schneider

Johannes Dr/u/ Ppel

Heinz Josef Leuwer

Ronald Wilmes

Reiner K&uuml;lchen

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

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

The invention relates to a method for the weight-accurate filling of ingot molds in a non-iron casting machine, e.g. a copper anode casting machine or a zinc anode casting machine, which is configured in the form of casting wheels that are use for production in a fully mechanized casting operation and are provided with the ingot molds. The aim of the invention is to obtain the desired precise-weight quality of a piece and exact plane parallelism of the bordering surfaces thereof. Said aim is achieved by carrying out the following steps: first, a liquid metal is introduced into an intermediate trough (') at a regulated mass flow rate, the continuous dynamic weight increase being simultaneously determined; second, liquid metal is fed into a dosing trough (&#x2032;) which is located on each side of the intermediate trough (&#x2032;) by alternately tilting the intermediate trough (&#x2032;) on one side followed by the other. After filling the first dosing trough (), the intermediate trough () is tilted in the direction of the second dosing trough (&#x2032;) while the mass of an anode is cast from the first filled dosing trough into one of the ingot molds (&#x2032;) that are arranged on the casting wheel (&#x2032;) by means of a controlled tilting movement. Also disclosed is a device for carrying out the inventive method.

Method and device for the weight-controlled filling of ingot molds in non-iron casting machines

An apparatus for the continuous casting of metals, especially of steel, is equipped with a base frame () carrying a continuous casting mold () and an oscillating device () disposed on the base frame () and with a foot roller frame () disposed on the foot end () of the continuous casting mold (). In order to obtain better protection for the mold region and components disposed downstream thereof, it is proposed that the continuous casting mold () together with an oscillation frame () and an oscillating drive () engaging the oscillating frame () be arranged in an upwardly and laterally closed housing () and that the foot roller frame () fastened on the continuous casting mold () extends through a laterally shielding lower housing ().

Device for continuously casting metals, especially steel

A method for casting and rolling preliminary sections, especially H-sections, and a device for the support, guidance and deformation of a metal strand, especially a steel cast strand (), in a continuous casting installation for preliminary sections with soft reduction (), wherein roll carriers () are arranged below the continuous casting mold opposite each other on each side of the cast strand (), the rolls of said carriers being in transport and/or deformation connection with said cast strand, and wherein to avoid segregation and porosity, the preliminary section is precast in the continuous casting mould with a bulge () on the flanges () on the surface () of the web of said preliminary section, and the bulges () of the flange () and the web of the preliminary section () are rolled flat in the soft reduction area () in such a way that the outer surfaces of the flange () and the web surfaces of the preliminary section () are largely plane.

Method for casting and immediate rolling, and device for the support, guidance and deformation of a metal strand, especially in steel strand

A device for the continuous casting of metals, especially steel material, to elongated products in a multistrand casting apparatus with a plurality of continuous casting molds which are oscillatingly driven in an oscillating frame () by means of leaf springs () whereby the leaf springs () extend transversely to the casting direction () and serve for guide and weight compensation. The smallest possible strand spacing 'A' is provided for that on a longitudinal foundation frame () to housings () in the form of compact flat cassettes () are secured one behind the other in the strand travel direction. In the housings upper and lower leaf spring pairs () run transversely to the cast strands () and the oscillating strands () engage the leaf spring pairs (), whereby a front oscillating drive () works synchronously with the rear oscillating drive ().

Device for the continuous casting of metals, in particular steel material, to form elongated products in a multiple casting line

The secondary cooling and the strand support are matched to the cooling state of a continuously cast strand cross section. The secondary cooling and support are reduced in dependence upon the solidification profile of the cast strand along the distance traveled.

Method and device for continuous casting and subsequent forming of a steel billet, especially a billet in the form of an ingot or a preliminary section

The invention relates to a device for the continuous casting of metals, especially steel, by means of a continuous casting mold () which is mounted in an oscillating frame (). Said oscillating frame can be driven so that it oscillates in the direction of casting (), the course of the oscillation movement and/or the frequency being adjustable. The oscillating frame () is mounted with spring assemblies () arranged symmetrically on both sides of the strand, for guiding and weight compensation. The device is used on a continuous casting mold () with a shaped casting cross-section (), which is mounted in the oscillating frame (). The leaf-spring-mounted oscillating frame () can be operated with the continuous casting mold () in a resonance oscillation method in order to give the preliminary section a better surface.

Device for the continuous casting of metals, especially steel

A dummy bar for a continuous metal casting plant, particularly for a continuous casting plant for preliminary steel sections, includes a one-piece head piece having dimensions corresponding to the dimensions of the mold cross-section and two rows of segments connected to the head piece. The two rows of segments extend parallel to each other in the longitudinal direction of the dummy bar and are spaced apart from each other by the width of the dummy bar. Flexible steel bands are mounted on each row of segments for connecting the segments.

Dummy bar for a continuous metal casting plant, particularly for a continuous casting plant for preliminary steel sections

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

A strand guiding segment for slab casting plants with a guiding width for the cast strand is adjustable between guide rollers of a frame on a fixed side and a frame on a detachable side, wherein the frames interact with adjusting units for overcoming the ferrostatic pressure and for adjusting the desired sectional width of the strand. The adjusting units are four independently adjustable pressure cylinders arranged outside of the radiation range at the upper side of the segment, wherein the distance between the segment middle and cylinder which determines the segment width is reduced on both sides by the dimension of the cylinder which has been moved to the upper side of the segment. The segment crossbeams are provided with radiation protection plates instead of water cooling means and cooled side frames are laterally flanged to the bottom frames.

Strand guiding segment for slab casting plants

A device for continuously casting steel includes a continuous casting mold supported in a lifting table and oscillating in the casting direction and at least one oscillation drive acting on the lifting table. The lifting table is constructed with guide blocks extending underneath the plane of the table and a stationary clamping block is arranged between the guide blocks. At least two individual resiliently soft plate springs are mounted along the short sides of the mold underneath the table plane in both sides of the clamping block and extending between the clamping block and the adjacent guide block, wherein the plate springs are arranged at a distance one above the other and so as to extend parallel relative to the corresponding plate springs arranged at the opposite short side of the mold.

Lifting table with oscillation drive for a continuous casting plant

During the continuous casting of preforms of large cross-section, considerable problems occur in the straightening region, because due to straightening, deformations are caused in the billet which has not yet solidified at the core. Therefore, in addition to the upper and lower straightening rollers additional lateral support rollers are provided, so that the billet is supported on all sides. For the purpose of space-saving incorporation in a multi-billet installation, the support rollers are mounted in swinging frames, which are moved by vertically raised cylinders. In order that the support rollers can be adapted to different billet dimensions, they are received within the fork-like swinging frames by vertically movable guide frames with roller supports inserted therein and able to be adjusted horizontally. Springs inserted in the swinging frames exert a continuous force in a vertical direction against the guide frames. Upon lowering of the upper straightening rollers, the pressure plates of the roller supporting beam bear against the guide frames, whereby an automatic adaptation to a new billet thickness is provided.

Growing community of inventors

Langenfeld, Germany

Adolf Gustav Zajber