EP0535368B1 - Method and apparatus for continuous casting of metal strand - Google Patents

Method and apparatus for continuous casting of metal strand Download PDF

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Publication number
EP0535368B1
EP0535368B1 EP92114594A EP92114594A EP0535368B1 EP 0535368 B1 EP0535368 B1 EP 0535368B1 EP 92114594 A EP92114594 A EP 92114594A EP 92114594 A EP92114594 A EP 92114594A EP 0535368 B1 EP0535368 B1 EP 0535368B1
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EP
European Patent Office
Prior art keywords
steel strip
strand
rollers
thickness
deformation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP92114594A
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German (de)
French (fr)
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EP0535368A1 (en
Inventor
Günter Dr. Flemming
Hans Streubel
Wolfgang Prof.Dr. Rohde
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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Priority claimed from DE4135214A external-priority patent/DE4135214C2/en
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Publication of EP0535368A1 publication Critical patent/EP0535368A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/14—Soft reduction

Definitions

  • the invention relates to a method for producing steel strip, wherein a continuously cast steel strip, which consists of a solidified strand shell and a liquid core, is reduced in thickness in a roll deformation and then rolled.
  • the thickness of the strand shell formed essentially depends on the casting speed.
  • the rolling force must be adapted to the current strand shell thicknesses. If the casting speed is too low, the available rolling force is no longer sufficient, so that the target thickness of the steel strip produced is exceeded. If the casting speeds are too high, welding of the strand shells can only be achieved by falling below the target thickness of the steel strip produced.
  • the object of the invention is to provide a method and a system for carrying out the method, undesired thickness deviations of the steel strip produced being avoided and a good structure being achieved.
  • the aim is to simplify the deformation unit and to reduce its energy consumption.
  • the object is achieved according to the invention in that a steel strip strand of 40-80 mm thickness is cast, the steel strip strand is roll-deformed to a maximum of 15-40 mm thickness and 2-15 mm residual liquid core in a maximum of three stages, and then the steel strip strand is solidified is guided without deformation.
  • casting speed and strip thickness can be freely assigned to each other to achieve high production performance.
  • a core-tight and segregation-free structure is achieved.
  • the reduction in the contact force of the deformation unit results in a structural simplification and an energy saving.
  • the thickness of the strand shell is advantageously 6-19 mm before the roll deformation.
  • the degree of roll deformation is 10-60% and can be changed during the casting.
  • the roll-formed strand is guided in parallel over a length of 1 - 5 m.
  • the steel strip After solidification, the steel strip is set to the rolling temperature and rolled.
  • a maximum of three pairs of deforming rollers are arranged downstream of a solidification section consisting of support rollers and a drive device.
  • the shaping rollers and / or support rollers are provided with a mechanical positioning device and a hydraulic pressing device.
  • the steel strip 1 consists of a mold 1 for casting a steel strip strand 2 of 40-80 mm thickness, a pair of deforming rollers 5, guide rollers 7 and drive rollers 8.
  • a bending roller 9 is provided for deflecting the steel strip.
  • the steel strip 2 'then passes into a driving straightening device 10 and can be divided by scissors 11. To adjust the temperature, the steel strip sections then pass through a furnace 12, which is followed by a further pair of scissors 13 and a descaling device 14.
  • a Steckel rolling mill arranged in the material flow consists of a roll stand 15 with upstream or downstream reel furnaces 16, 17.
  • the rolling strip 2 ′′ leaving the Steckel rolling mill passes through a laminar cooling section 18 and is then wound up on a reel 19.
  • Figures 2-4 of the drawing show the manufacturing steps of the steel strip 2, 2 'in the continuous casting plant.
  • a cast strand 2 with a liquid core 4 is formed in the mold 1 by cooling and solidifying the strand shell 3 from the cast steel melt.
  • the strand shells 3 located on the broad broad sides are reduced in their mutual spacing by the deforming rollers 5 (6) provided with internal cooling 35. In this way, a strand of 15-40 mm thickness with 2-15 mm residual liquid core 4 is produced.
  • the roll-shaped casting strand 2 is guided between the roller tracks formed from guide rollers 7 without deformation, which leads to solidification.
  • the strand conveyance is effected by the drive rollers 8.
  • the casting strand 2 is roll-formed in one step between a pair of shaping rollers 5.
  • a two-stage roll deformation takes place between the deforming roller pairs 5 and 6.
  • a two- or three-stage roll deformation is advantageous for steels that do not allow a high deformation rate or a high deformation level.
  • the casting strand below the mold is first guided without deformation between support rollers 21 to set a quality-specific temperature.
  • the support rollers 21 and the guide rollers 7 have internal cooling 22 and 23, respectively.
  • the deforming rollers 5 are interposed several times, the bearings 24, 25 being fastened to cross members 27, 28 which are guided on stands 26 on opposite sides.
  • spindle gear 29 are attached to the stands.
  • the spindle gears 29 connected to a motor 30 each have a threaded spindle 31 in the direction of the cross members 27, 28.
  • a spacer nut 32 screwed onto a threaded spindle 31 is secured against rotation by a feather key 33.
  • Each spacer nut 32 is assigned a stop plate 34 on the cross members 27, 28.
  • the crossbeams 27, 28 are pulled towards one another by adjusting cylinders 36, each with a pull rod 36a, their mutual spacing and thus the spacing of the deforming rollers 5 being determined by the spacer nuts 32 set by the spindle gear 29. In this way it is achieved that the pair of deforming rollers 5 with a distance adjustment to the mold space of the mold 1st stays centered. Appropriate storage and adjustment is provided for further pairs of deforming rollers 6 (FIG. 3).
  • the guide rollers 7 are also temporarily stored several times, the bearings 37, 38 being mounted on frames 39, 40.
  • the frames 39, 40 are guided on stands 41 on both sides.
  • spindle gear 42 As a positioning device for the frames 39, 40 and guide rollers 7 41 spindle gear 42 are attached to the stands.
  • the spindle gears 42 connected to a motor 43 each have a threaded spindle 44 in the direction of the frames 39, 40.
  • Each spacer nut 45 screwed onto a threaded spindle 44 is secured against rotation by a feather key 46.
  • Each spacer nut 45 is assigned a stop plate 47 on the frames 39, 40.
  • the frames 39, 40 are pulled towards one another by adjusting cylinders 48, each with a pull rod 48a, their mutual spacing and thus the spacing of the guide rollers 7 being determined by the spacer nuts 45 set by the spindle gear 42. In this way it is achieved that the guide rollers 7 remain aligned with the corresponding deforming rollers 5 when the distance is adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)

Abstract

In a method for the production of steel strip, a continuously cast steel strip (2) consisting of a solidified strand shell (3) and a molten core (4) is reduced in thickness in a roller-deformation operation and then rolled. To avoid unwanted thickness deviations, to improve the structure and to simplify the roller-deformation unit, a continuous steel strip is cast in a thickness of 40 - 80 mm, subjected to roller deformation to a thickness of 15 - 40 mm with a remaining molten core with a thickness of 2 - 15 mm in a maximum of three stages and allowed to solidify completely. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Stahlband, wobei ein stranggegossenes Stahlband, das aus einer erstarrten Strangschale und einem Flüssigkern besteht in einer Rollverformung dickenverringert und anschließend gewalzt wird.The invention relates to a method for producing steel strip, wherein a continuously cast steel strip, which consists of a solidified strand shell and a liquid core, is reduced in thickness in a roll deformation and then rolled.

Bei diesem durch die EP-A1 0 286 862 bekannt gewordenen Verfahren wird ein in einer Durchlaufkokille gegossenes Stahlband von 40 - 50 mm Dicke nach dem Austritt aus der Kokille durch ein Walzenpaar soweit zusammengedrückt, daß die inneren Wandungen der in der Kokille gebildeten Strangschalen miteinander verschweißen.In this method, which became known from EP-A1 0 286 862, a steel strip of 40-50 mm thickness cast in a continuous mold is pressed together by a pair of rollers after it emerges from the mold so that the inner walls of the strand shells formed in the mold weld together .

Beim Stranggießen in einer Durchlaufkokille von gegebener Länge ist die Dicke der gebildeten Strangschale im wesentlichen von der Gießgeschwindigkeit abhängig. Zur Gewährleistung eines konstanten Walzspalts muß die Walzkraft den momentanen Strangschalendicken angepaßt werden. Bei zu geringer Gießgeschwindigkeit reicht die verfügbare Walzkraft nicht mehr aus, so daß es zum Überschreiten der Solldicke des erzeugten Stahlbandes kommt. Bei zu hoher Gießgeschwindigkeiten kann ein Verschweißen der Strangschalen nur durch eine Unterschreitung der Solldicke der erzeugten Stahlbandes erreicht werden.When continuous casting in a continuous mold of a given length, the thickness of the strand shell formed essentially depends on the casting speed. To ensure a constant roll gap, the rolling force must be adapted to the current strand shell thicknesses. If the casting speed is too low, the available rolling force is no longer sufficient, so that the target thickness of the steel strip produced is exceeded. If the casting speeds are too high, welding of the strand shells can only be achieved by falling below the target thickness of the steel strip produced.

Aufgabe der Erfindung ist die Schaffung eines Verfahrens und einer Anlage zur Durchführung des Verfahrens, wobei ungewollte Dickenabweichungen des erzeugten Stahlbandes vermieden werden und ein gutes Gefüge erzielt wird. Darüber hinaus soll eine Vereinfachung der Verformungseinheit sowie eine Verringerung ihres Energiebedarfs erreicht werden.The object of the invention is to provide a method and a system for carrying out the method, undesired thickness deviations of the steel strip produced being avoided and a good structure being achieved. In addition, the aim is to simplify the deformation unit and to reduce its energy consumption.

Die gestellte Aufgabe wird nach der Erfindung dadurch gelöst, daß ein Stahlbandstrang von 40 - 80 mm Dicke gegossen wird, der Stahlbandstrang bis auf 15 - 40 mm Dicke und 2 - 15 mm Restflüssigkern in maximal drei Stufen rollverformt wird und anschließend der Stahlbandstrang bis zur Durcherstarrung verformungsfrei geführt wird.The object is achieved according to the invention in that a steel strip strand of 40-80 mm thickness is cast, the steel strip strand is roll-deformed to a maximum of 15-40 mm thickness and 2-15 mm residual liquid core in a maximum of three stages, and then the steel strip strand is solidified is guided without deformation.

Auf diese Weise können Gießgeschwindigkeit und Banddicke zur Erzielung hoher Produktionsleistungen freier einander zugeordnet werden. Es wird ein kerndichtes und seigerungsfreies Gefüge erzielt. Aus der Verringerung der Anstellkraft der Verformungseinheit ergibt sich eine bauliche Vereinfachung und eine Energieeinsparung.In this way, casting speed and strip thickness can be freely assigned to each other to achieve high production performance. A core-tight and segregation-free structure is achieved. The reduction in the contact force of the deformation unit results in a structural simplification and an energy saving.

Die Dicke der Strangschale beträgt vor der Rollverformung vorteilhaft 6 - 19 mm.The thickness of the strand shell is advantageously 6-19 mm before the roll deformation.

Gemäß einem weiteren Merkmal der Erfindung beträgt der Grad der Rollverformung 10 - 60 % und kann während des Gießens verändert werden.According to a further feature of the invention, the degree of roll deformation is 10-60% and can be changed during the casting.

Bei einer Gießgeschwindigkeit von 2 - 10 m/min wird der rollverformte Strang über eine Länge von 1 - 5 m parallelgeführt.At a casting speed of 2 - 10 m / min, the roll-formed strand is guided in parallel over a length of 1 - 5 m.

Das Stahlband wird nach der Durcherstarrung auf Walztemperatur eingestellt und gewalzt.After solidification, the steel strip is set to the rolling temperature and rolled.

In vorrichtungsmäßiger Ausgestaltung der Erfindung sind in einer Anlage zur Durchführung des Verfahrens einer Stahlbandgießkokille maximal drei Verformrollenpaaren eine aus Stützrollen bestehende Durcherstarrungsstrecke und eine Treibeinrichtung nachgeordnet.In a device-like embodiment of the invention, in a system for carrying out the method of a steel strip casting mold, a maximum of three pairs of deforming rollers are arranged downstream of a solidification section consisting of support rollers and a drive device.

Dabei sind die Verformrollen und/oder Stützrollen mit einer mechanischen Positioniereinrichtung und einer hydraulischen Andrückeinrichtung versehen.The shaping rollers and / or support rollers are provided with a mechanical positioning device and a hydraulic pressing device.

Weitere Ausgestaltungen der Erfindung sind in den Ansprüchen 9 - 16 dargelegt.Further embodiments of the invention are set out in claims 9-16.

In der Zeichnung sind Ausführungsbeispiele mit Merkmalen und Vorteilen der Erfindung dargestellt. Es zeigen

Fig. 1
Im Prinzip eine Anlage zur Herstellung von Stahlband,
Fig. 2
schematisch einen ersten Abschnitt der Anlage von der Kokille bis zur Treibeinrichtung,
Fig. 3
eine Alternative zu Fig. 2 mit zwei Verformrollenpaaren,
Fig. 4
eine weitere Alternative mit vor den Verformrollenpaaren angeordneten Stützrollenpaaren,
Fig. 5
eine Teilansicht eines Verformrollenpaares mit Lagertraverse und Anstell- und Positioniereinrichtung
und
Fig. 6
eine Teilansicht eines Stützrollenpaares mit Lagerrahmen und Anstell- und Positioniereinrichtung.
The drawing shows exemplary embodiments with features and advantages of the invention. Show it
Fig. 1
In principle a plant for the production of steel strip,
Fig. 2
schematically a first section of the plant from the mold to the driving device,
Fig. 3
an alternative to FIG. 2 with two pairs of deforming rollers,
Fig. 4
another alternative with support roller pairs arranged in front of the deforming roller pairs,
Fig. 5
a partial view of a pair of deforming rollers with a crossbeam and adjusting and positioning device
and
Fig. 6
a partial view of a pair of support rollers with a bearing frame and adjusting and positioning device.

Eine Anlage gemäß Fig. 1 besteht aus einer Kokille 1 zum Gießen eines Stahlbandstranges 2 von 40 - 80 mm Dicke, einem Verformrollenpaar 5, Führungsrollen 7 und Treibrollen 8. Zur Umlenkung des Stahlbandes ist eine Biegerolle 9 vorgesehen. Das Stahlband 2' gelangt anschließend in eine Treibrichteinrichtung 10 und kann durch eine Schere 11 unterteilt werden. Zur Temperatureinstellung durchlaufen die Stahlbandabschnitte dann einen Ofen 12, dem eine weitere Schere 13 und eine Entzunderungsvorrichtung 14 nachgeordnet sind.1 consists of a mold 1 for casting a steel strip strand 2 of 40-80 mm thickness, a pair of deforming rollers 5, guide rollers 7 and drive rollers 8. A bending roller 9 is provided for deflecting the steel strip. The steel strip 2 'then passes into a driving straightening device 10 and can be divided by scissors 11. To adjust the temperature, the steel strip sections then pass through a furnace 12, which is followed by a further pair of scissors 13 and a descaling device 14.

Ein im Materialfluß angeordnetes Steckelwalzwerk besteht aus einem Walzgerüst 15 mit vor- bzw. nachgeordneten Haspelöfen 16, 17. Das das Steckelwalzwerk verlassende Walzband 2'' durchläuft eine Laminarkühlstrecke 18 und wird anschließend auf einem Haspel 19 aufgewickelt.A Steckel rolling mill arranged in the material flow consists of a roll stand 15 with upstream or downstream reel furnaces 16, 17. The rolling strip 2 ″ leaving the Steckel rolling mill passes through a laminar cooling section 18 and is then wound up on a reel 19.

Den Figuren 2 - 4 der Zeichnung sind die Herstellschritte des Stahlbandes 2, 2' in der Stranggießanlage zu entnehmen. Aus der eingegossenen Stahlschmelze entsteht in der Kokille 1 durch Abkühlung und Erstarrung der Strangschale 3 ein Gießstrang 2 mit Flüssigkern 4.Figures 2-4 of the drawing show the manufacturing steps of the steel strip 2, 2 'in the continuous casting plant. A cast strand 2 with a liquid core 4 is formed in the mold 1 by cooling and solidifying the strand shell 3 from the cast steel melt.

Unterhalb der Kokille 1 werden die an den Strangbreitseiten befindlichen Strangschalen 3 durch die mit Innenkühlung 35 versehenen Verformrollen 5 (6) in ihrem gegenseitigen Abstand verringert. Auf diese Weise entsteht ein Strang von 15 - 40 mm Dicke bei 2 - 15 mm Restflüssigkern 4. Der rollverformte Gießstrang 2 wird zwischen aus Führungsrollen 7 gebildeten Rollenbahnen verformungsfrei geführt, wobei es zur Durcherstarrung kommt. Die Strangförderung wird durch die Treibrollen 8 bewirkt.Below the mold 1, the strand shells 3 located on the broad broad sides are reduced in their mutual spacing by the deforming rollers 5 (6) provided with internal cooling 35. In this way, a strand of 15-40 mm thickness with 2-15 mm residual liquid core 4 is produced. The roll-shaped casting strand 2 is guided between the roller tracks formed from guide rollers 7 without deformation, which leads to solidification. The strand conveyance is effected by the drive rollers 8.

In dem Ausführungsbeispiel nach Fig. 2 wird der Gießstrang 2 zwischen einem Verformrollenpaar 5 in einer Stufe rollverformt. Alternativ dazu findet in dem Ausführungsbeispiel nach Fig. 3 zwischen den Verformrollenpaaren 5 und 6 eine zweistufige Rollverformung statt. Eine zwei- oder auch dreistufige Rollverformung ist bei Stählen vorteilhaft, die eine hohe Verformungsgeschwindigkeit bzw. eine hohe Verformungsstufe nicht zulassen. Zur Kühlung des Gießstranges 2 sind zwischen den Führungsrollen 7 Wassersprühdüsen 20 angeordnet.In the exemplary embodiment according to FIG. 2, the casting strand 2 is roll-formed in one step between a pair of shaping rollers 5. Alternatively, in the exemplary embodiment according to FIG. 3, a two-stage roll deformation takes place between the deforming roller pairs 5 and 6. A two- or three-stage roll deformation is advantageous for steels that do not allow a high deformation rate or a high deformation level. To cool the casting strand 2, 7 water spray nozzles 20 are arranged between the guide rollers.

In der Alternative gemäß Fig. 4 wird der Gießstrang unterhalb der Kokille zunächst zur Einstellung einer qualitätsspezifischen Temperatur zunächst zwischen Stützrollen 21 verformungsfrei geführt. Die Stützrollen 21 und die Führungsrollen 7 weisen eine Innenkühlung 22 bzw. 23 auf.In the alternative according to FIG. 4, the casting strand below the mold is first guided without deformation between support rollers 21 to set a quality-specific temperature. The support rollers 21 and the guide rollers 7 have internal cooling 22 and 23, respectively.

Bei der in Fig. 5 dargestellten konstruktiven Ausgestaltung sind die Verformrollen 5 mehrfach zwischengelagert, wobei die Lager 24, 25 an Traversen 27, 28 befestigt sind, die gegenüberliegend beidseits an Ständern 26 geführt sind. Als Positioniereinrichtung für die Traversen 27, 28 und Verformrollen 5 sind an den Ständern 26 Spindelgetriebe 29 befestigt. Die mit einem Motor 30 verbundenen Spindelgetriebe 29 haben in Richtung der Traversen 27, 28 je eine Gewindespindel 31. Je eine auf eine Gewindespindel 31 aufgeschraubte Distanzmutter 32 ist durch eine Paßfeder 33 gegen Drehung gesichert. Jeder Distanzmutter 32 ist an den Traversen 27, 28 eine Anschlagplatte 34 zugeordnet. Durch Anstellzylinder 36 mit je einer Zugstange 36a werden die Traversen 27, 28 gegeneinander gezogen, wobei ihr gegenseitiger Abstand und damit der Abstand der Verformrollen 5 durch die vom Spindelgetriebe 29 eingestellten Distanzmuttern 32 bestimmt wird. Auf diese Weise wird erreicht, daß das Verformrollenpaar 5 bei einer Abstandsverstellung auf den Formraum der Kokille 1 zentriert bleibt. Für weitere Verformrollenpaare 6 (Fig. 3) ist eine entsprechende Lagerung und Verstellung vorgesehen.In the constructive embodiment shown in FIG. 5, the deforming rollers 5 are interposed several times, the bearings 24, 25 being fastened to cross members 27, 28 which are guided on stands 26 on opposite sides. As a positioning device for the traverses 27, 28 and deforming rollers 5 26 spindle gear 29 are attached to the stands. The spindle gears 29 connected to a motor 30 each have a threaded spindle 31 in the direction of the cross members 27, 28. A spacer nut 32 screwed onto a threaded spindle 31 is secured against rotation by a feather key 33. Each spacer nut 32 is assigned a stop plate 34 on the cross members 27, 28. The crossbeams 27, 28 are pulled towards one another by adjusting cylinders 36, each with a pull rod 36a, their mutual spacing and thus the spacing of the deforming rollers 5 being determined by the spacer nuts 32 set by the spindle gear 29. In this way it is achieved that the pair of deforming rollers 5 with a distance adjustment to the mold space of the mold 1st stays centered. Appropriate storage and adjustment is provided for further pairs of deforming rollers 6 (FIG. 3).

Bei der in Fig. 6 dargestellten konstruktiven Ausgestaltung sind die Führungsrollen 7 ebenfalls mehrfach zwischengelagert, wobei die Lager 37, 38 an Rahmen 39, 40 gelagert sind. Die Rahmen 39, 40 sind beidseits an Ständern 41 geführt.6, the guide rollers 7 are also temporarily stored several times, the bearings 37, 38 being mounted on frames 39, 40. The frames 39, 40 are guided on stands 41 on both sides.

Als Positioniereinrichtung für die Rahmen 39, 40 und Führungsrollen 7 sind an den Ständern 41 Spindelgetriebe 42 befestigt. Die mit einem Motor 43 verbundenen Spindelgetriebe 42 haben in Richtung der Rahmen 39, 40 je eine Gewindespindel 44. Je eine auf eine Gewindespindel 44 aufgeschraubte Distanzmutter 45 ist durch eine Paßfeder 46 gegen Drehung gesichert. Jeder Distanzmutter 45 ist an den Rahmen 39, 40 eine Anschlagplatte 47 zugeordnet. Durch Anstellzylinder 48 mit je einer Zugstange 48a werden die Rahmen 39, 40 gegeneinander gezogen, wobei ihr gegenseitiger Abstand und damit der Abstand der Führungsrollen 7 durch die vom Spindelgetriebe 42 eingestellten Distanzmuttern 45 bestimmt wird. Auf diese Weise wird erreicht, daß die Führungsrollen 7 bei einer Abstandsverstellung auf die entsprechenden Verformrollen 5 ausgerichtet bleiben.As a positioning device for the frames 39, 40 and guide rollers 7 41 spindle gear 42 are attached to the stands. The spindle gears 42 connected to a motor 43 each have a threaded spindle 44 in the direction of the frames 39, 40. Each spacer nut 45 screwed onto a threaded spindle 44 is secured against rotation by a feather key 46. Each spacer nut 45 is assigned a stop plate 47 on the frames 39, 40. The frames 39, 40 are pulled towards one another by adjusting cylinders 48, each with a pull rod 48a, their mutual spacing and thus the spacing of the guide rollers 7 being determined by the spacer nuts 45 set by the spindle gear 42. In this way it is achieved that the guide rollers 7 remain aligned with the corresponding deforming rollers 5 when the distance is adjusted.

Claims (16)

  1. Method of producing steel strip (2), wherein a continuously cast steel strip consisting of a hardened strand skin (3) and a liquid core (4) is reduced in thickness in a deformation by rolling and subsequently rolled, characterised thereby that a steel strip strand (2) of 40 to 80 millimetres thickness is cast, the steel strip strand (2) is deformed by rolling to 15 to 40 millimetres thickness and 2 to 15 millimetres residual liquid core (4) in at most three steps, and subsequently the steel strip strand (2) is guided free of deformation until hardening through.
  2. Method according to claim 1, characterised thereby that the thickness of the strand skin (3) amounts to 6 to 19 millimetres before the roll deformation.
  3. Method according to claim 1, characterised thereby that the degree of roll deformation amounts to between 10 and 60 percent.
  4. Method according to claim 1, characterised thereby that the degree of deformation by rolling is varied during the casting.
  5. Method according to claim 1, characterised thereby that the length of the parallel guidance path amounts to 1 to 5 metres for a casting speed of 2 to 10 metres per minute.
  6. Method according to claim 1, characterised thereby that the steep strip (2') after the hardening through is set to rolling temperature and rolled.
  7. Plant for carrying out the method according to one or more of claims 1 to 6, which consists of a steel strip casting chill mould, with deforming rollers arranged downstream, characterised thereby that at most three deforming roller pairs (5, 6) are arranged downstream of a hardening-through path which consists of guide rollers (7), and a drive equipment (8).
  8. Plant according to claim 7, characterised thereby that the deforming rollers (5, 6) are provided with a mechanical positioning equipment (29 to 34) and a hydraulic pressing-down equipment (36, 36a).
  9. Plant according to claim 7, characterised thereby that the guide rollers (7) are provided with a mechanical positioning equipment (42 to 47) and a hydraulic pressing-down equipment (48, 48a).
  10. Plant according to claim 7, characterised thereby that the deforming rollers (5, 6) are cooled internally and have a diameter of 150 to 300 millimetres.
  11. Plant according to claim 10, characterised thereby that the deforming rollers (5, 6) are subdivided over the strand width and mounted intermediately.
  12. Plant according to claim 7, characterised thereby that the guide rollers (7) of the parallel guide path are coated in thermally insulating manner.
  13. Plant according to claim 7, characterised thereby that guide rollers (7) subdivided over the strand width and intermediately mounted form the hardening through path.
  14. Installation according to one or more of claims 7 to 13, characterised by a deflecting equipment (8) and drive aligning equipment (10), which are arranged downstream of the hardening through path.
  15. Installation according to one of claims 7 to 14, characterised by a temperature adjusting path (12) and a rolling medchanism (15), which are arranged downstream of the drive aligning equipment (10).
  16. Installation according to one of claims 7 to 15, characterised thereby that support rollers (21) are arranged between chill mould (1) and deforming roller pair (5).
EP92114594A 1991-09-19 1992-08-27 Method and apparatus for continuous casting of metal strand Expired - Lifetime EP0535368B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4131116 1991-09-19
DE4131116 1991-09-19
DE4135214 1991-10-25
DE4135214A DE4135214C2 (en) 1991-09-19 1991-10-25 Process and plant for the production of steel strip

Publications (2)

Publication Number Publication Date
EP0535368A1 EP0535368A1 (en) 1993-04-07
EP0535368B1 true EP0535368B1 (en) 1996-06-05

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EP92114594A Expired - Lifetime EP0535368B1 (en) 1991-09-19 1992-08-27 Method and apparatus for continuous casting of metal strand

Country Status (8)

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US (2) US5339887A (en)
EP (1) EP0535368B1 (en)
JP (1) JP3113410B2 (en)
CN (1) CN1039290C (en)
AT (1) ATE138835T1 (en)
CA (1) CA2078582C (en)
ES (1) ES2089317T3 (en)
RU (1) RU2053859C1 (en)

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EP1108484A1 (en) * 1999-12-15 2001-06-20 SMS Demag AG Process for changing the cross-sectional format of a strand below the mould in a continuous casting plant
US6308769B1 (en) 1997-11-21 2001-10-30 Sms Schloemann-Siemag Aktiengesellschaft Continuous casting plant for casting slabs with a continuous casting mold and a strand guiding unit composed of rollers
WO2016165933A1 (en) 2015-04-15 2016-10-20 Sms Group Gmbh Casting/rolling system and method for operating same
DE102015210865A1 (en) 2015-05-06 2016-11-10 Sms Group Gmbh Casting-rolling plant and method for its operation

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DE19515937C2 (en) * 1994-05-02 2001-07-19 Siemens Ag Belt casting and rolling mill
DE19849603C2 (en) * 1997-11-21 2002-11-07 Sms Demag Ag Process and continuous caster for casting slabs with a continuous mold and a strand guide from rolls
AT410522B (en) * 2001-05-07 2003-05-26 Hulek Anton METHOD AND CONTINUOUS CASTING SYSTEM FOR VERTICAL CONTINUOUS CASTING OF A STEEL STRIP
DE10302265A1 (en) * 2003-01-22 2004-07-29 Sms Demag Ag Manufacture of continuously-cast steel slab, includes stage of high-energy deformation at high temperature to reduce depth of vibration markings in product
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DE102007005778A1 (en) * 2006-03-09 2007-09-13 Sms Demag Ag Continuous casting plant and method for operating a continuous casting plant
ITRM20070150A1 (en) * 2007-03-21 2008-09-22 Danieli Off Mecc PROCESS AND PLANT FOR THE PRODUCTION OF METAL TAPES
IT1405344B1 (en) * 2010-06-14 2014-01-03 Danieli Off Mecc LAMINATION LINE AND ITS PROCEDURE
CN102554169B (en) * 2012-03-15 2013-12-18 中冶连铸技术工程股份有限公司 Method and device for controlling system security under light press of slab
JP5742867B2 (en) * 2013-04-10 2015-07-01 トヨタ自動車株式会社 Pull-up type continuous casting apparatus and pull-up type continuous casting method
DE102013214939A1 (en) * 2013-07-30 2015-02-05 Sms Siemag Ag Casting mill for producing metal strips
CN104415973B (en) * 2013-08-28 2016-03-30 中冶东方工程技术有限公司秦皇岛研究设计院 A kind of integrated casting and rolling mill speed control method
US10471502B2 (en) 2013-12-26 2019-11-12 Posco Continuous casting and rolling apparatus and method
CN104084429B (en) * 2014-07-11 2015-09-23 中冶东方工程技术有限公司 A kind of liquid core large pressure roll reduction control method
CN104148387B (en) * 2014-07-11 2016-05-04 中冶东方工程技术有限公司 The hot core milling method of a kind of continuous casting
KR101736574B1 (en) 2015-06-04 2017-05-17 주식회사 포스코 Solidifying apparatus
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IT201800006563A1 (en) * 2018-06-21 2019-12-21 PLANT AND PROCEDURE FOR THE PRODUCTION OF A HOT ROLLED METAL TAPE

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Publication number Priority date Publication date Assignee Title
US6308769B1 (en) 1997-11-21 2001-10-30 Sms Schloemann-Siemag Aktiengesellschaft Continuous casting plant for casting slabs with a continuous casting mold and a strand guiding unit composed of rollers
EP1108484A1 (en) * 1999-12-15 2001-06-20 SMS Demag AG Process for changing the cross-sectional format of a strand below the mould in a continuous casting plant
US6533024B2 (en) 1999-12-15 2003-03-18 Sms Demag Ag Method for change of section of a billet below a casting die of a continuous casting plant
WO2016165933A1 (en) 2015-04-15 2016-10-20 Sms Group Gmbh Casting/rolling system and method for operating same
DE102015210863A1 (en) 2015-04-15 2016-10-20 Sms Group Gmbh Casting-rolling plant and method for its operation
DE102015210865A1 (en) 2015-05-06 2016-11-10 Sms Group Gmbh Casting-rolling plant and method for its operation

Also Published As

Publication number Publication date
EP0535368A1 (en) 1993-04-07
CN1039290C (en) 1998-07-29
JP3113410B2 (en) 2000-11-27
ES2089317T3 (en) 1996-10-01
RU2053859C1 (en) 1996-02-10
CN1071868A (en) 1993-05-12
US5339887A (en) 1994-08-23
CA2078582A1 (en) 1993-03-20
ATE138835T1 (en) 1996-06-15
CA2078582C (en) 1999-11-16
US5400850A (en) 1995-03-28
JPH05277682A (en) 1993-10-26

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