EP1519798A1 - Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely separated as required after solidification - Google Patents

Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely separated as required after solidification

Info

Publication number
EP1519798A1
EP1519798A1 EP03729965A EP03729965A EP1519798A1 EP 1519798 A1 EP1519798 A1 EP 1519798A1 EP 03729965 A EP03729965 A EP 03729965A EP 03729965 A EP03729965 A EP 03729965A EP 1519798 A1 EP1519798 A1 EP 1519798A1
Authority
EP
European Patent Office
Prior art keywords
rolling
casting
roller
speed
hearth furnace
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.)
Granted
Application number
EP03729965A
Other languages
German (de)
French (fr)
Other versions
EP1519798B1 (en
Inventor
Günter FLEMMING
Joachim Schwellenbach
Hans Streubel
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 Demag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE10249704A external-priority patent/DE10249704A1/en
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1519798A1 publication Critical patent/EP1519798A1/en
Application granted granted Critical
Publication of EP1519798B1 publication Critical patent/EP1519798B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • 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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/005—Control of time interval or spacing between workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49989—Followed by cutting or removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Definitions

  • the invention relates to a method and a casting and rolling plant for semi-continuous rolling or continuous rolling by casting a metal, in particular a steel strand, which is cross-divided after solidification, if necessary, the casting strand partial lengths are guided into a roller hearth furnace for heating and uniformity to the rolling temperature , and the partial lengths with rolling temperature are introduced for rolling into a rolling mill, the continuous casting being continued without interruption during the rolling operation.
  • Such a method is known from EP 0 264 459 B1.
  • the partial lengths of the casting strand are stored in the tunnel furnace with transverse transport.
  • the partial casting lengths are stored over a period of time which is a multiple, e.g. four times their casting time.
  • the method is carried out in such a way that the rolling of each individual casting strand part length is carried out in a time unit which is only a fraction, e.g. corresponds to a fifth of its casting time, and to the effect that the rolling is carried out discontinuously and the rolling process is interrupted with a pause for a period of time which corresponds to the difference between a casting time and a rolling.
  • This process is strictly based on continuous casting and is not matched to the rolling process.
  • the invention has for its object to tune the semi-continuous rolling and the continuous rolling more closely to the conditions during rolling in order to adapt the rolling process to the continuous casting process.
  • the object is achieved according to the invention in that the casting speed is reduced for a roll change in such a way that a sufficient buffer time for a roll change is maintained between the end of the rolling of the previous multiple length and the piercing of a new partial length or multiple length in the rolling mill.
  • the semi-endless rolling and the endless rolling are adapted to the conditions of the rolling and a buffer time is created for the inevitable roll change.
  • the larger lengths of rolling stock resulting from semi or endless rolling are taken into account in that several coils are produced from a multiple length.
  • the buffer time for the roll change can also be influenced by reducing the casting speed depending on the feed speed of the rolling mill and / or the roll change time including the calibration time and / or the buffer length of the roller hearth furnace and / or the final roll thickness after the cross-cutting.
  • the buffer length of the roller hearth furnace be matched to at least one roller level.
  • the casting speed V c which corresponds to the feed speed V w of the rolling mill, is reduced to the same or greater according to the following formula:
  • a further time saving can be achieved by increasing the final rolling thickness and / or the feed speed of the rolling mill between rolling campaigns within a casting sequence after the cross-cutting.
  • Another embodiment is that a combination of an adjustment of the casting speed and the final rolling thickness is used to optimize the production output.
  • Another buffer time can be achieved by increasing the final rolling thickness by a factor of 2 and reducing the casting speed to a minimum of 30%.
  • the method can be used in such a way that, after the cross-cutting, the casting speed is reduced and / or the drawing-in speed of the rolling mill and / or the final rolling thickness are increased, the worn rolls of the rolling mill are changed after the rolling has ended and after this has taken place Roll change the casting speed is increased to the feed speed of the rolling mill.
  • the casting and rolling system required for carrying out the process for semi-continuous rolling or continuous rolling of a cast metal or steel strand which can be divided into partial lengths when required in the solidified state and the partial lengths of the continuous strand can be kept warm in a roller hearth furnace and heated to the rolling temperature and comparable and are insertable into a rolling mill, the sequential arrangement of the continuous casting machine, a transverse partial facility, a roller hearth furnace, additional facilities, a rolling mill and at the end of a coiler.
  • the casting and rolling system can then be operated according to the method described above, in that between the continuous casting machine and the rolling train a roller hearth furnace with at least one roll level, at the entrance and / or exit of which a cross-section device, subsequently a descaling device, is provided, followed by the rolling train and a separating device, a cooling section and coiler systems are arranged behind the rolling mill.
  • One embodiment consists in the fact that, with at least two roller levels, pivotable roller tracks are arranged at the entrance and exit of the roller hearth furnace, each with a bending and / or straightening unit. The strand material can thus be guided precisely into the respective roll level.
  • the strand guide can also be designed in such a way that multiple lengths can be introduced at a single height level from the outlet of the continuous casting machine through the roller conveyor of the roller hearth furnace into the rolling mill.
  • FIG. 2A shows a partial side view with a casting strand, the casting speed being equal to or less than the rolling speed
  • FIG. 2B shows the same view with the transport speed of a casting strand partial length increased to the rolling speed
  • 3A shows the continuous casting and rolling at the same casting and rolling speed and with two coiler systems
  • FIG. 3B shows the continuous casting and rolling with the two coiler systems
  • FIG. 4A shows the situation when the roll is changed and the casting speed is reduced
  • FIG. 4B shows the situation after the roll has been changed and increased
  • a casting and rolling plant is shown in side view, consisting of a continuous casting machine 1, in which a casting strand 1 a is generated, a roller hearth furnace 2 and a rolling mill 3 with the associated ancillary devices.
  • a tundish 4 is fed from a ladle (not shown), to which a continuous casting mold 5, a support roller stand 6 with a bending unit 7 and a straightening machine 8 are arranged.
  • a transverse dividing device 10 and behind it (as an alternative in FIG. 5) a pivotable roller conveyor 11 for the entrance 12a of the roller hearth furnace 2.
  • a pivotable roller conveyor 13 and a cross-section device 14.
  • the basic embodiment in FIG. 1 works without the pivotable roller conveyors 11, 13.
  • the rolling mill 3 begins after the cross-cutting device 14 with a descaling device 15. This is followed by the rolling mill 3 with about five to seven roll stands. Downstream of the roll stands, a cooling section 17 and, following this, two coiler systems 18 are provided after a separating device 16.
  • the method is used for semi-continuous rolling or continuous rolling by casting liquid metal, in particular liquid steel, into one
  • Casting strand 1 a which after solidification in the cross-section device 10 in casting strand partial lengths 20 is conveyed into the roller hearth furnace 2.
  • the respective casting strand part length 20 is heated in the roller hearth furnace 2, the temperature is evened out and brought to the rolling temperature for rolling out in the rolling train 3. During this time, the continuous casting continues without interruption.
  • the casting speed V c is reduced for a roller change such that a sufficient one between the end of the rolling of a previous multiple length 21 and the piercing of a new partial length 20 or multiple length 21 in the rolling train 3 Buffer time for the roll change is available.
  • Multiple coils 22 can be wound from the multiple length 21.
  • the casting speed V c is reduced, for example, as a function of the feed speed V w of the rolling train 3 and / or the respective roll change time, including a calibration time and / or the buffer length 23 of the roller hearth furnace 2 and / or the final roll thickness after the cross-cutting.
  • the buffer length 23 of the roller hearth furnace 2 can be matched to at least one roller level 24 (cf. FIG. 1).
  • the casting speed V c is set equal to or less than the drawing speed V w into the rolling mill 3. As soon as the roller hearth furnace 2 is loaded, the speed V c can be raised again to the feed speed V w , as shown in FIG. 2B.
  • Fig. 3A endless rolling is shown.
  • the casting strand 1 a is guided and rolled at the casting speed V c , which is equal to the drawing speed V w into the first roll stand, then cooled, wound and cut in the separating device 16.
  • the casting strand 1a as shown in FIG. 3B, can be used with a reduced casting Velocity V c are poured and the part of the cast strand 20 separated is rolled and wound at feed speed V w .
  • the casting speed V c is reduced equal to or greater according to the following formula: 1
  • V w feed speed of the rolling mill (m / min)
  • ⁇ t roll change time (min)
  • L length of the tunnel furnace (m).
  • the roll change is shown in Fig. 4A.
  • the casting speed V c according to the above calculation is 6.67 m / min and is accordingly lower than the drawing speed V w .
  • the casting speed V c is increased again to the drawing-in speed V v .
  • the final rolling thickness and / or the drawing-in speed V w of the rolling train 3 can be increased after the cross-cutting.
  • the final roll thickness can be increased by a maximum of 2.5 times.
  • Another option is that the final roll thickness is increased by a maximum of a factor of 2 and the casting speed is reduced to a minimum of 30%.
  • the casting speed V c is reduced and / or the drawing-in speed V w of the rolling mill 3 and / or the final rolling thickness are increased, after the rolling has ended, the worn rollers 3a of the rolling mill 3 are changed and after the roll change, the casting speed V c is increased to the draw-in speed V w of the rolling train 3.
  • the casting and rolling system for semi-endless rolling or continuous rolling of a cast metal or steel strand which can be divided into casting strand partial lengths 20 when required as a casting strand 1a in the solidified state and which keeps the casting strand partial lengths 20 warm in a roller hearth furnace 2 and heated to the rolling temperature and evened out are and then introduced into a rolling mill 3, requires that continuous casting is carried out on the continuous casting machine 1.
  • the roller hearth furnace 2 with at least one roller level 24, at the entrance 12a and / or exit 12b of which a transverse dividing device 14, subsequently a descaling device 15, is provided, thereon
  • the first roll stand follows and the separating device 16, cooling section 17 and coiler systems 18 are arranged behind the rolling mill 3.
  • roller conveyors 11, 13 on the inlet and outlet sides have bending and / or straightening units 7, 8 which can be aligned or set up on the respective roller plane 24.
  • the pivotable roller conveyors 11, 13 are provided at the entrance 12a and at the exit 12b of the roller hearth furnace 2 with at least two roller levels 24, each with a bending and / or straightening unit 7, 8 (cf. FIG. 5).
  • multiple lengths 21 on several roller levels 24 can be carried out from the exit 9 of the continuous casting machine 1 through the pivotable roller conveyor 11 of the roller hearth furnace 2 via the pivotable roller conveyor 13 into the rolling train 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)
  • Continuous Casting (AREA)

Abstract

A method for semi-endless or endless rolling by casting a metal strand, especially a steel strand, which is cut to length as required after solidification, wherein the cut lengths of cast strand are fed into a roller hearth furnace for heating and homogenizing at rolling temperature and are then fed at rolling temperature into a rolling mill to be rolled out. The continuous casting is continued without interruption during the rolling operation, and a sufficient buffer time for a roll change is maintained in the rolling mill. For carrying out a roll change, the casting rate is reduced as a function of the feed rate of the rolling mill and/or the roll-changing time, and/or the buffer length of the roller hearth furnace, and/or the final rolled thickness after the strand has been cut to length.

Description

VERFAHREN UND GIESSWALZANLAGE ZUM SEMI-ENDLOSWALZEN ODER ENDLOSWALZEN DURCH GIESSEN EINES METALLS INSBESONDERE EINES STAHLSTRANGS DER NACH DEM ERSTARREN BEI BEDARF QUERGETEILT WIRD V LEARN and casting rolling plant for the semi-endless rolling or EN D L E N Z OSWAL by casting a metal ESPECIALLY A steel strand D E R NA CH solidification IF REQUIRED divided transversely IS
Die Erfindung betrifft ein Verfahren und eine Gießwalzanlage zum Semi-Endloswalzen oder Endloswalzen durch Gießen eines Metall-, insbesondere eines Stahl-strangs, der nach dem Erstarren bei Bedarf quergeteilt wird, die Gießstrang-Teillängen in einen Rollenherdofen zum Aufheizen und Vergleichmäßigen auf Walztemperatur geführt werden, und die Teillängen mit Walztemperatur zum Auswalzen in eine Walzstraße eingeführt werden, wobei das Stranggießen während des Walzbetriebs ohne Unterbrechung fortgesetzt wird.The invention relates to a method and a casting and rolling plant for semi-continuous rolling or continuous rolling by casting a metal, in particular a steel strand, which is cross-divided after solidification, if necessary, the casting strand partial lengths are guided into a roller hearth furnace for heating and uniformity to the rolling temperature , and the partial lengths with rolling temperature are introduced for rolling into a rolling mill, the continuous casting being continued without interruption during the rolling operation.
Ein derartiges Verfahren ist aus der EP 0 264 459 B1 bekannt. Bei diesem Verfahren werden die Gießstrang-Teillängen im Tunnelofen unter Quertransport gespeichert . Die Gießstrang-Teillängen werden über einen Zeitraum gespeichert, der einem Mehrfachen, z.B. dem Vierfachen, ihrer Gießzeit entspricht. Weiter wird das Verfahren derart ausgeübt, dass die Walzung jeder einzelnen Gießstrang- Teillänge aber in einer Zeiteinheit durchgeführt wird, die nur einem Bruchteil, z.B. einem Fünftel seiner Gießzeit entspricht, und dahingehend, dass die Walzung diskontinuierlich durchgeführt und dabei der Walzvorgang jeweils über einen Zeitraum, der der Differenz zwischen einer Gießzeit und einer Walzung entspricht, mit einer Pausenzeit unterbrochen wird. Dieses Verfahren richtet sich streng nach dem Stranggießen und ist nicht auf das Walzverfahren abgestimmt.Such a method is known from EP 0 264 459 B1. In this process, the partial lengths of the casting strand are stored in the tunnel furnace with transverse transport. The partial casting lengths are stored over a period of time which is a multiple, e.g. four times their casting time. Furthermore, the method is carried out in such a way that the rolling of each individual casting strand part length is carried out in a time unit which is only a fraction, e.g. corresponds to a fifth of its casting time, and to the effect that the rolling is carried out discontinuously and the rolling process is interrupted with a pause for a period of time which corresponds to the difference between a casting time and a rolling. This process is strictly based on continuous casting and is not matched to the rolling process.
Der Erfindung liegt die Aufgabe zugrunde, das Semi-Endloswalzen und das Endloswalzen stärker auf die Verhältnisse beim Walzen abzustimmen, um den Walzvorgang zeitlich an den Stranggießvorgang anzupassen. Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass für einen Walzenwechsel die Gießgeschwindigkeit derart abgesenkt wird, dass zwischen dem Ende des Walzens der vorhergehenden Mehrfachlänge und dem Anstechen einer neuen Teillänge oder Mehrfachlänge im Walzwerk eine ausreichen- de Pufferzeit für einen Walzenwechsel eingehalten wird. Dadurch wird das Semi-Endloswalzen und das Endloswalzen auf die Verhältnisse des Walzens an- gepasst und es wird eine Pufferzeit für den unvermeidlichen Walzenwechsel geschaffen.The invention has for its object to tune the semi-continuous rolling and the continuous rolling more closely to the conditions during rolling in order to adapt the rolling process to the continuous casting process. The object is achieved according to the invention in that the casting speed is reduced for a roll change in such a way that a sufficient buffer time for a roll change is maintained between the end of the rolling of the previous multiple length and the piercing of a new partial length or multiple length in the rolling mill. As a result, the semi-endless rolling and the endless rolling are adapted to the conditions of the rolling and a buffer time is created for the inevitable roll change.
Die durch das Semi- oder Endloswalzen entstehenden größeren Walzgut- Längen werden dabei dadurch berücksichtigt, dass aus einer Mehrfachlänge mehrere Coils erzeugt werden.The larger lengths of rolling stock resulting from semi or endless rolling are taken into account in that several coils are produced from a multiple length.
Die Pufferzeit für den Walzenwechsel kann noch dadurch beeinflusst werden, dass die Gießgeschwindigkeit in Abhängigkeit der Einzugsgeschwindigkeit der Walzstraße und / oder der Walzenwechselzeit einschließlich der Kalibrierzeit und / oder der Pufferlänge des Rollenherdofens und / oder der Endwalzdicke nach dem Querteilen reduziert wird.The buffer time for the roll change can also be influenced by reducing the casting speed depending on the feed speed of the rolling mill and / or the roll change time including the calibration time and / or the buffer length of the roller hearth furnace and / or the final roll thickness after the cross-cutting.
Nach einem anderen Merkmal wird vorgeschlagen, dass die Pufferlänge des Rollenherdofens zumindest auf eine Rollenebene abgestimmt wird.According to another feature, it is proposed that the buffer length of the roller hearth furnace be matched to at least one roller level.
Um die gewünschte Pufferzeit zu erreichen ist ferner vorteilhaft, dass die Gießgeschwindigkeit Vc, die der Einzugsgeschwindigkeit Vw des Walzwerkes ent- spricht, gleich oder größer nach der folgenden Formel reduziert wird:In order to achieve the desired buffer time, it is also advantageous that the casting speed V c , which corresponds to the feed speed V w of the rolling mill, is reduced to the same or greater according to the following formula:
11
ΔV = V w - ( m / min), wobeiΔV = V w - (m / min), where
Δt/ L + 1 / V „Δt / L + 1 / V "
bedeuten: ΔV = Gießgeschwindigkeitsreduzierung V w = Einzugsgeschwindigkeit des Walzwerksmean: ΔV = casting speed reduction V w = feed speed of the rolling mill
Δt = Walzenwechselzeit und L = Länge des Tunnelofens.Δt = roll change time and L = length of the tunnel furnace.
Ein weiterer Zeitgewinn kann dadurch erzielt werden, dass zwischen Walzkam- pagnen innerhalb einer Gießsequenz nach dem Querteilen die Endwalzdicke und / oder die Einzugsgeschwindigkeit des Walzwerks erhöht wird.A further time saving can be achieved by increasing the final rolling thickness and / or the feed speed of the rolling mill between rolling campaigns within a casting sequence after the cross-cutting.
Eine Ausgestaltung besteht ferner darin, dass eine Kombination aus einer Anpassung der Gießgeschwindigkeit und der Endwalzdicke zur Optimierung der Produktionsleistung angewendet wird.Another embodiment is that a combination of an adjustment of the casting speed and the final rolling thickness is used to optimize the production output.
Dabei ist außerdem von Vorteil, wenn die Endwalzdicke maximal um den Faktor 2,5 erhöht wird.It is also an advantage if the final roll thickness is increased by a factor of 2.5.
Eine andere Pufferzeit kann dahingehend erzielt werden, indem die Endwalzdicke maximal um den Faktor 2 erhöht und die Gießgeschwindigkeit auf minimal 30% abgesenkt wird.Another buffer time can be achieved by increasing the final rolling thickness by a factor of 2 and reducing the casting speed to a minimum of 30%.
Das Verfahren kann nach einem praktischen Beispiel derart angewendet wer- den, dass nach dem Querteilen die Gießgeschwindigkeit reduziert wird und / oder die Einzugsgeschwindigkeit der Walzstraße und / oder die Endwalzdicke erhöht werden, nach Beenden des Walzens die verschlissenen Walzen der Walzstraße gewechselt werden und nach erfolgtem Walzenwechsel die Gießgeschwindigkeit auf die Einzugsgeschwindigkeit der Walzstraße gesteigert wird.According to a practical example, the method can be used in such a way that, after the cross-cutting, the casting speed is reduced and / or the drawing-in speed of the rolling mill and / or the final rolling thickness are increased, the worn rolls of the rolling mill are changed after the rolling has ended and after this has taken place Roll change the casting speed is increased to the feed speed of the rolling mill.
Die zur Durchführung des Verfahrens erforderliche Gießwalzanlage zum Semi- Endloswalzen oder Endloswalzen eines gegossenen Metall- oder Stahlstrangs, der im erstarrten Zustand bei Bedarf in Gießstrang-Teillängen aufteilbar ist und die Gießstrang-Teillängen in einem Rollenherdofen warmhaltbar und auf Walz- temperatur aufheizbar und vergleichmäßigbar und in ein Walzwerk einführbar sind, setzt die Hintereinanderanordnung der Stranggießmaschine, einer Quer- teileinrichtung, eines Rollenherdofens, weiterer Nebeneinrichtungen, einer Walzstraße und am Ende einer Haspelanlage voraus.The casting and rolling system required for carrying out the process for semi-continuous rolling or continuous rolling of a cast metal or steel strand, which can be divided into partial lengths when required in the solidified state and the partial lengths of the continuous strand can be kept warm in a roller hearth furnace and heated to the rolling temperature and comparable and are insertable into a rolling mill, the sequential arrangement of the continuous casting machine, a transverse partial facility, a roller hearth furnace, additional facilities, a rolling mill and at the end of a coiler.
Die Gießwalzanlage kann dann nach dem vorstehend beschriebenen Verfahren betrieben werden, indem zwischen der Stranggießmaschine und der Walzstra- ße ein Rollenherdofen mit zumindest einer Rollenebene, an dessen Eingang und / oder Ausgang eine Querteileinrichtung, nachfolgend eine Entzunde- rungseinrichtung vorgesehen sind, darauf die Walzstraße folgt und hinter der Walzstraße eine Trenneinrichtung, eine Kühlstrecke und Haspelanlagen angeordnet sind.The casting and rolling system can then be operated according to the method described above, in that between the continuous casting machine and the rolling train a roller hearth furnace with at least one roll level, at the entrance and / or exit of which a cross-section device, subsequently a descaling device, is provided, followed by the rolling train and a separating device, a cooling section and coiler systems are arranged behind the rolling mill.
Eine Ausgestaltung besteht dabei darin, dass bei mindestens zwei Rollenebenen schwenkbare Rollenbahnen am Eingang und Ausgang des Rollenherdofens, mit jeweils einer Biege- und / oder Richteinheit angeordnet sind. Das Stranggut kann damit genau in die jeweilige Rollenebene geführt werden.One embodiment consists in the fact that, with at least two roller levels, pivotable roller tracks are arranged at the entrance and exit of the roller hearth furnace, each with a bending and / or straightening unit. The strand material can thus be guided precisely into the respective roll level.
Die Strangführung kann auch dahingehend ausgebildet sein, dass Mehrfachlängen auf einem einzigen Höhen-Niveau von dem Ausgang der Stranggießmaschine durch die Rollenbahn des Rollenherdofens bis in das Walzwerk einführbar sind.The strand guide can also be designed in such a way that multiple lengths can be introduced at a single height level from the outlet of the continuous casting machine through the roller conveyor of the roller hearth furnace into the rolling mill.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt, die nachstehend Verfahrens- und vorrichtungstechnisch näher erläutert werden.The drawing shows exemplary embodiments of the invention, which are explained in more detail below in terms of process and device technology.
Es zeigen:Show it:
Fig. 1 die Gießwalzanlage mit einem Rollenherdofen und einer Rollenebene in Seitenansicht,1 the casting and rolling plant with a roller hearth furnace and a roller plane in side view,
Fig. 2A eine Seiten-Teilansicht mit einem Gießstrang, wobei die Gießgeschwindigkeit gleich oder kleiner der Walzgeschwindigkeit ist, Fig. 2B dieselbe Ansicht bei auf Walzgeschwindigkeit erhöhter Transportgeschwindigkeit einer Gießstrang-Teillänge, Fig. 3A das Endlos-Gießen und -Walzen bei gleicher Gieß- und Walzgeschwindigkeit und mit zwei Haspelanlagen, Fig. 3B das Endlos-Gießen und -Walzen mit den zwei Haspelanlagen,2A shows a partial side view with a casting strand, the casting speed being equal to or less than the rolling speed, FIG. 2B shows the same view with the transport speed of a casting strand partial length increased to the rolling speed, 3A shows the continuous casting and rolling at the same casting and rolling speed and with two coiler systems, FIG. 3B shows the continuous casting and rolling with the two coiler systems,
Fig. 4A die Situation beim Walzenwechsel und reduzierter Gießgeschwindigkeit, Fig. 4B die Situation nach beendetem Walzenwechsel und gesteigerter4A shows the situation when the roll is changed and the casting speed is reduced, FIG. 4B shows the situation after the roll has been changed and increased
Gießgeschwindigkeit und Fig. 5 die Gießwalzanlage in der Seitenansicht wie Fig. 1 für eine alternative Ausführungsform.Casting speed and Fig. 5 the casting and rolling plant in the side view as Fig. 1 for an alternative embodiment.
In Fig.1 ist eine Gießwalzanlage in Seitenansicht dargestellt, bestehend aus einer Stranggießmaschine 1 , in der ein Gießstrang 1 a erzeugt wird, einem Rollenherdofen 2 und einer Walzstraße 3 mit den zugehörigen Nebeneinrichtungen.In Figure 1, a casting and rolling plant is shown in side view, consisting of a continuous casting machine 1, in which a casting strand 1 a is generated, a roller hearth furnace 2 and a rolling mill 3 with the associated ancillary devices.
In der Stranggießmaschine 1 wird aus einer (nicht gezeichneten) Gießpfanne ein Verteilergefäß 4 gespeist, dem eine Stranggießkokille 5, ein Stützrollengerüst 6 mit einer Biegeeinheit 7 und eine Richtmaschine 8 nachgeordnet sind. Am Ausgang 9 ist eine Querteileinrichtung 10 und hinter dieser (als Alternative in Fig. 5 ) eine schwenkbare Rollenbahn 11 für den Eingang 12a des Rollen- herdofens 2 angeordnet. An dessen Ausgang 12b befinden sich wiederum eine schwenkbare Rollenbahn 13 und eine Querteileinrichtung 14. Die Grundausführungsform in Fig. 1 arbeitet ohne die schwenkbaren Rollenbahnen 11 , 13.In the continuous casting machine 1, a tundish 4 is fed from a ladle (not shown), to which a continuous casting mold 5, a support roller stand 6 with a bending unit 7 and a straightening machine 8 are arranged. At the exit 9 there is a transverse dividing device 10 and behind it (as an alternative in FIG. 5) a pivotable roller conveyor 11 for the entrance 12a of the roller hearth furnace 2. At its output 12b there is again a pivotable roller conveyor 13 and a cross-section device 14. The basic embodiment in FIG. 1 works without the pivotable roller conveyors 11, 13.
Die Walzstraße 3 beginnt nach der Querteileinrichtung 14 mit einer Entzunde- rungseinrichtung 15. Darauf folgt die Walzstraße 3 mit etwa fünf bis sieben Walzgerüsten. Hinter den Walzgerüsten sind nach einer Trenneinrichtung 16 eine Kühlstrecke 17 und dieser folgend zwei Haspelanlagen 18 vorgesehen.The rolling mill 3 begins after the cross-cutting device 14 with a descaling device 15. This is followed by the rolling mill 3 with about five to seven roll stands. Downstream of the roll stands, a cooling section 17 and, following this, two coiler systems 18 are provided after a separating device 16.
Das Verfahren dient dem Semi-Endloswalzen oder dem Endloswalzen durch Gießen von flüssigem Metall, insbesondere von flüssigem Stahl, zu einemThe method is used for semi-continuous rolling or continuous rolling by casting liquid metal, in particular liquid steel, into one
Gießstrang 1 a, der nach dem Erstarren in der Querteileinrichtung 10 in Gieß- strang-Teillängen 20 in den Rollenherdofen 2 befördert wird. Die jeweilige Gießstrang-Teillänge 20 wird im Rollenherdofen 2 aufgeheizt, in der Temperatur vergleichmäßigt und auf Walztemperatur zum Auswalzen in der Walzstraße 3 gebracht. Während dieser Zeit wird das Stranggießen ohne Unterbrechung weiter geführt.Casting strand 1 a, which after solidification in the cross-section device 10 in casting strand partial lengths 20 is conveyed into the roller hearth furnace 2. The respective casting strand part length 20 is heated in the roller hearth furnace 2, the temperature is evened out and brought to the rolling temperature for rolling out in the rolling train 3. During this time, the continuous casting continues without interruption.
Für den Fall, dass die Walzen 3a verschlissen sind, wird für einen Walzenwechsel die Gießgeschwindigkeit Vc derart abgesenkt, dass zwischen dem Ende des Walzens einer vorhergehenden Mehrfachlänge 21 und dem Anstechen einer neuen Teillänge 20 oder Mehrfachlänge 21 in der Walzstraße 3 eine aus- reichende Pufferzeit für den Walzenwechsel zur Verfügung steht. Aus der Mehrfachlänge 21 können mehrere Coils 22 gewickelt werden.In the event that the rollers 3a are worn, the casting speed V c is reduced for a roller change such that a sufficient one between the end of the rolling of a previous multiple length 21 and the piercing of a new partial length 20 or multiple length 21 in the rolling train 3 Buffer time for the roll change is available. Multiple coils 22 can be wound from the multiple length 21.
Die Gießgeschwindigkeit Vc wird z.B. in Abhängigkeit der Einzugsgeschwindigkeit Vw der Walzstraße 3 und / oder der jeweiligen Walzenwechselzeit einschließlich einer Kalibrierzeit und / oder der Pufferlänge 23 des Rollenherdofens 2 und / oder der Endwalzdicke nach dem Querteilen reduziert. Die Pufferlänge 23 des Rollenherdofens 2 kann zumindest auf eine Rollenebene 24 abgestimmt werden (vgl. Fig. 1).The casting speed V c is reduced, for example, as a function of the feed speed V w of the rolling train 3 and / or the respective roll change time, including a calibration time and / or the buffer length 23 of the roller hearth furnace 2 and / or the final roll thickness after the cross-cutting. The buffer length 23 of the roller hearth furnace 2 can be matched to at least one roller level 24 (cf. FIG. 1).
In Fig. 2A wird die Gießgeschwindigkeit Vc gleich oder kleiner als die Einzugsgeschwindigkeit Vw in die Walzstraße 3 eingestellt. Sobald der Rollenherdofen 2 beschickt ist, kann die Geschwindigkeit Vc auf Einzugsgeschwindigkeit Vw wieder angehoben werden, wie in Fig. 2B gezeigt ist.2A, the casting speed V c is set equal to or less than the drawing speed V w into the rolling mill 3. As soon as the roller hearth furnace 2 is loaded, the speed V c can be raised again to the feed speed V w , as shown in FIG. 2B.
In Fig. 3A ist das Endloswalzen gezeigt. Der Gießstrang 1 a wird mit Gießgeschwindigkeit V c, die gleich der Einzugsgeschwindigkeit V w in das erste Walzgerüst ist, geführt und gewalzt, dann gekühlt, gewickelt und in der Trenneinrichtung 16 geschnitten. Nach einer Querteilung in der Querteileinrichtung 10 kann der Gießstrang 1a, wie in Fig. 3B gezeigt ist, mit reduzierter Gießge- schwindigkeit Vc gegossen werden und die abgetrennte Gießstrang-Teillänge 20 wird mit Einzugsgeschwindigkeit Vw gewalzt und gewickelt.In Fig. 3A, endless rolling is shown. The casting strand 1 a is guided and rolled at the casting speed V c , which is equal to the drawing speed V w into the first roll stand, then cooled, wound and cut in the separating device 16. After a transverse division in the transverse dividing device 10, the casting strand 1a, as shown in FIG. 3B, can be used with a reduced casting Velocity V c are poured and the part of the cast strand 20 separated is rolled and wound at feed speed V w .
Die Gießgeschwindigkeit Vc wird gleich oder größer nach der folgenden Formel reduziert: 1The casting speed V c is reduced equal to or greater according to the following formula: 1
ΔV = V w (m / min)ΔV = V w (m / min)
Δt / L + 1 / V wΔt / L + 1 / V w
wobei bedeuten:where mean:
ΔV = Gießgeschwindigkeitsreduzierung (m / min)ΔV = casting speed reduction (m / min)
V w = Einzugsgeschwindigkeit des Walzwerks (m / min)V w = feed speed of the rolling mill (m / min)
Δt = Walzenwechselzeit (min) L = Länge des Tunnelofens (m).Δt = roll change time (min) L = length of the tunnel furnace (m).
Bei einer Einzugsgeschwindigkeit Vw = 10 m / min, einer Walzenwechselzeit Δt = 10 min und einer Rollenherdofen-Länge L = 200 m muss die Gießgeschwindigkeit Vc um mindestens 3,33 m/min reduziert werden. 1 1With a feed speed V w = 10 m / min, a roll change time Δt = 10 min and a roller hearth length L = 200 m, the casting speed V c must be reduced by at least 3.33 m / min. 1 1
Gießgeschwindigkeitsreduzierung ΔV = 10 - = 10 -Casting speed reduction ΔV = 10 - = 10 -
10 / 200 + 1 / 10 3 / 2010/200 + 1/10 3/20
= 10 m - 6,67 m = 3,33 m / min= 10 m - 6.67 m = 3.33 m / min
Der Walzenwechsel ist in Fig. 4A dargestellt. Die Gießgeschwindigkeit Vc beträgt nach der vorstehenden Berechnung 6,67 m /min und ist dementsprechend niedriger als die Einzugsgeschwindigkeit Vw. Nach dem Walzenwechsel, Fig. 4B, wird die Gießgeschwindigkeit Vc wieder auf die Einzugsgeschwindigkeit Vv erhöht.The roll change is shown in Fig. 4A. The casting speed V c according to the above calculation is 6.67 m / min and is accordingly lower than the drawing speed V w . After changing the roller, Fig. 4B, the casting speed V c is increased again to the drawing-in speed V v .
Zwischen den Walzkampagnen innerhalb einer Gießsequenz kann nach dem Querteilen die Endwalzdicke und / oder die Einzugsgeschwindigkeit Vw der Walzstraße 3 erhöht werden.Between the rolling campaigns within a casting sequence, the final rolling thickness and / or the drawing-in speed V w of the rolling train 3 can be increased after the cross-cutting.
Es kann aber auch eine Kombination aus einer Anpassung der Gießgeschwindigkeit Vc und der Endwalzdicke zur Optimierung der Produktionsleistung angewendet werden. Dabei kann die Endwalzdicke maximal um den Faktor 2,5 erhöht werden. Eine andere Wahlmöglichkeit besteht darin, dass die Endwalzdicke maximal um den Faktor 2 erhöht und die Gießgeschwindigkeit auf minimal 30% abgesenkt wird.However, a combination of an adjustment of the casting speed V c and the final rolling thickness can also be used to optimize the production performance. The final roll thickness can be increased by a maximum of 2.5 times. Another option is that the final roll thickness is increased by a maximum of a factor of 2 and the casting speed is reduced to a minimum of 30%.
In einem weiteren Ausführungsbeispiel ist vorgesehen, dass nach dem Quer- teilen die Gießgeschwindigkeit Vc reduziert wird, und / oder die Einzugsgeschwindigkeit Vw der Walzstraße 3 und / oder die Endwalzdicke erhöht werden, nach Beenden des Walzens die verschlissenen Walzen 3a der Walzstraße 3 gewechselt werden und nach erfolgtem Walzenwechsel die Gießgeschwindigkeit Vc auf die Einzugsgeschwindigkeit Vw der Walzstraße 3 gesteigert wird.In a further exemplary embodiment, it is provided that after the cross-cutting, the casting speed V c is reduced and / or the drawing-in speed V w of the rolling mill 3 and / or the final rolling thickness are increased, after the rolling has ended, the worn rollers 3a of the rolling mill 3 are changed and after the roll change, the casting speed V c is increased to the draw-in speed V w of the rolling train 3.
Die Gießwalzanlage zum Semi-Endloswalzen oder Endloswalzen eines gegossenen Metall- oder Stahlstrangs, der als Gießstrang 1a im erstarrten Zustand bei Bedarf in Gießstrang-Teillängen 20 aufteilbar ist und die Gießstrang- Teillängen 20 in einem Rollenherdofen 2 warmgehalten und auf Walztempera- tur aufgeheizt und vergleichmäßigt werden und anschließend in eine Walzstraße 3 eingeführt werden, setzt voraus, dass auf der Stranggießmaschine 1 kontinuierlich gegossen wird. Dazu ist zwischen der Stranggießmaschine 1 und der Walzstraße 3 der Rollenherdofen 2 mit zumindest einer Rollenebene 24, an dessen Eingang 12a und / oder Ausgang 12b eine Querteileinrichtung 14, nachfolgend eine Entzunderungseinrichtung 15 vorgesehen sind, darauf das erste Walzgerüst folgt und hinter der Walzstraße 3 die Trenneinrichtung 16, Kühlstrecke 17 und Haspelanlagen 18 angeordnet sind.The casting and rolling system for semi-endless rolling or continuous rolling of a cast metal or steel strand, which can be divided into casting strand partial lengths 20 when required as a casting strand 1a in the solidified state and which keeps the casting strand partial lengths 20 warm in a roller hearth furnace 2 and heated to the rolling temperature and evened out are and then introduced into a rolling mill 3, requires that continuous casting is carried out on the continuous casting machine 1. For this purpose, between the continuous casting machine 1 and the rolling train 3, the roller hearth furnace 2 with at least one roller level 24, at the entrance 12a and / or exit 12b of which a transverse dividing device 14, subsequently a descaling device 15, is provided, thereon The first roll stand follows and the separating device 16, cooling section 17 and coiler systems 18 are arranged behind the rolling mill 3.
Die ein- und auslaufseitigen Rollenbahnen 11 , 13 besitzen Biege- und / oder Richteinheiten 7, 8 , die auf die jeweilige Rollenebene 24 aus- oder einrichtbar sind. So sind die schwenkbaren Rollenbahnen 11 , 13 am Eingang 12a und am Ausgang 12b des Rollenherdofens 2 mit zumindest zwei Rollenebenen 24, mit jeweils einer Biege- und / oder Richteinheit 7, 8 vorgesehen (vgl. Fig. 5).The roller conveyors 11, 13 on the inlet and outlet sides have bending and / or straightening units 7, 8 which can be aligned or set up on the respective roller plane 24. Thus, the pivotable roller conveyors 11, 13 are provided at the entrance 12a and at the exit 12b of the roller hearth furnace 2 with at least two roller levels 24, each with a bending and / or straightening unit 7, 8 (cf. FIG. 5).
Gemäß der alternativen Bauweise in Fig. 5 können Mehrfachlängen 21 auf mehreren Rollenebenen 24 von dem Ausgang 9 der Stranggießmaschine 1 durch die schwenkbare Rollenbahn 11 des Rollenherdofens 2 über die schwenkbare Rollenbahn 13 bis in die Walzstraße 3 durchgeführt werden. According to the alternative construction in FIG. 5, multiple lengths 21 on several roller levels 24 can be carried out from the exit 9 of the continuous casting machine 1 through the pivotable roller conveyor 11 of the roller hearth furnace 2 via the pivotable roller conveyor 13 into the rolling train 3.
Bezugszeichenliste 40 019Reference number list 40 019
1 Stranggießmaschine1 continuous casting machine
1 a Gießstrang1 a casting strand
2 Rollenherdofen2 roller hearth furnace
3 Walzstraße3 rolling mill
3a Walze3a roller
4 Verteilergefäß4 distribution vessel
5 Stranggießkokille5 continuous casting mold
6 Stützrollengerüst6 support roller frame
7 Biegeeinheit7 bending unit
8 Richtmaschine8 straightener
9 Ausgang9 exit
10 Querteileinrichtung10 cross-section device
11 Rollenbahn11 roller conveyor
12a Eingang12a entrance
12b Ausgang12b output
13 schwenkbare Rollenbahn13 swiveling roller conveyor
14 Querteileinrichtung14 cross-section device
15 Entzunderungseinrichtung15 descaling device
16 Trenneinrichtung16 separating device
17 Kühlstrecke17 cooling section
18 Haspelanlage18 reel system
19 0 Gießstrang-Teillänge 1 Mehrfachlänge 2 Coil 3 Pufferlänge 4 Rollenebene 19 0 Cast strand part length 1 multiple length 2 coil 3 buffer length 4 roll level

Claims

Patentansprüche claims
1 . Verfahren zum Semi-Endloswalzen oder Endloswalzen durch Gießen eines Metall-, insbesondere eines Stahlstrangs (1a), der nach dem Erstarren bei Bedarf quergeteilt wird, die Gießstrang-Teillängen (20) in einen Rollenherdofen (2) zum Aufheizen und Vergleichmäßigen auf Walztemperatur geführt werden, und die Teillängen (20) mit Walztemperatur zum Auswalzen in eine Walzstraße (3) eingeführt werden, wobei das1 . Method for semi-endless rolling or continuous rolling by casting a metal strand, in particular a steel strand (1a), which is cross-divided after solidification, if necessary, the casting strand partial lengths (20) are guided into a roller hearth furnace (2) for heating and uniformity to the rolling temperature , and the partial lengths (20) with rolling temperature for rolling are introduced into a rolling train (3), the
Stranggießen während des Walzbetriebs ohne Unterbrechung fortgesetzt wird, dadurch gekennzeichnet, dass für einen Walzenwechsel die Gießgeschwindigkeit (Vc) derart abge- senkt wird, dass zwischen dem Ende des Walzens einer vorhergehendenContinuous casting is continued without interruption during the rolling operation, characterized in that for a roll change the casting speed (V c ) is reduced in such a way that between the end of the rolling of a previous one
Mehrfachlänge (21 ) und dem Anstechen einer neuen Teillänge (20) oder Mehrfachlänge (21) im Walzwerk eine ausreichende Pufferzeit für einen Walzenwechsel eingehalten wird.Multiple length (21) and the piercing of a new partial length (20) or multiple length (21) in the rolling mill, a sufficient buffer time for a roll change is maintained.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass aus einer Mehrfachlänge (21 ) mehrere Coils (22) erzeugt werden.2. The method according to claim 1, characterized in that a plurality of coils (22) are generated from a multiple length (21).
3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Gießgeschwindigkeit (Vc) in Abhängigkeit der Einzugsgeschwindigkeit (Vw) der Walzstraße (3) und / oder der Walzenwechselzeit einschließlich der Kalibrierzeit und der Pufferlänge des Rollenherdofens (2) und / oder der Endwalzdicke nach dem Querteilen reduziert wird. 3. The method according to any one of claims 1 or 2, characterized in that the casting speed (V c ) as a function of the feed speed (V w ) of the rolling mill (3) and / or the roll change time including the calibration time and the buffer length of the roller hearth furnace (2) and / or the final roll thickness is reduced after the cross-cutting.
4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Pufferlänge (23) des Rollenherdofens (2) zumindest auf eine Rollenebene (24) abgestimmt wird.4. The method according to claim 1, characterized in that the buffer length (23) of the roller hearth furnace (2) is matched to at least one roller level (24).
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Gießgeschwindigkeit (Vc) gleich oder größer nach der folgenden Formel reduziert wird:5. The method according to any one of claims 1 to 4, characterized in that the casting speed (V c ) is reduced equal to or greater according to the following formula:
11
Δ V = V w - (m / min)Δ V = V w - (m / min)
Δt / L + 1 / V W Δt / L + 1 / V W
mit ΔV = Gießgeschwindigkeitsreduzierungwith ΔV = casting speed reduction
Vw = Einzugsgeschwindigkeit des WalzwerksV w = feed speed of the rolling mill
Δt = WalzenwechselzeitΔt = roll change time
L = Länge des Tunnelofens.L = length of the tunnel kiln.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zwischen Walzkampagnen innerhalb einer Gießsequenz nach dem Querteilen die Endwalzdicke und / oder die Einzugsgeschwindigkeit (Vw) des Walzwerks erhöht wird.6. The method according to any one of claims 1 to 5, characterized in that between rolling campaigns within a casting sequence after cross-cutting, the final roll thickness and / or the feed speed (V w ) of the rolling mill is increased.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass eine Kombination aus einer Anpassung der Gießgeschwindigkeit (Vc) und der Endwalzdicke zur Optimierung der Produktionsleistung angewendet wird.7. The method according to claim 6, characterized in that that a combination of an adjustment of the casting speed (V c ) and the final rolling thickness is used to optimize the production performance.
8. Verfahren nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Endwalzdicke maximal um den Faktor 2,5 erhöht wird.8. The method according to any one of claims 6 or 7, characterized in that the final rolling thickness is increased by a maximum of a factor of 2.5.
9. Verfahren nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Endwalzdicke maximal um den Faktor 2 erhöht und die Gießgeschwindigkeit (Vc) auf minimal 30% abgesenkt wird.9. The method according to any one of claims 6 or 7, characterized in that the final rolling thickness is increased by a maximum of a factor of 2 and the casting speed (V c ) is reduced to a minimum of 30%.
10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass nach dem Querteilen die Gießgeschwindigkeit (Vc) reduziert wird und / oder die Einzugsgeschwindigkeit (Vw) der Walzstraße (3) und / oder die Endwalzdicke erhöht werden, nach Beenden des Walzens die verschlissenen Walzen (3a) der Walzstraße (3) gewechselt werden und nach erfolgtem Walzenwechsel die Gießgeschwindigkeit (Vc) auf die Einzugsgeschwindigkeit (V ) der Walzstraße (3) gesteigert wird.10. The method according to any one of claims 1 to 9, characterized in that after the cross-cutting, the casting speed (V c ) is reduced and / or the feed speed (V w ) of the rolling mill (3) and / or the final rolling thickness are increased, after finishing of the rolling, the worn rollers (3a) of the rolling train (3) are changed and, after the roll has been changed, the casting speed (V c ) is increased to the feed speed (V) of the rolling train (3).
1 1. Gießwalzanlage zum Semi-Endloswalzen oder Endloswalzen eines gegossenen Metall- oder Stahlstranges (1 a), der im erstarrten Zustand bei Bedarf in Gießstrang-Teillängen (20) aufteilbar ist und die Gießstrang- Teillängen (20) in einem Rollenherdofen (2) warmhaltbar und auf Walz- temperatur aufheizbar und vergleichmäßigbar und in eine Walzstraße (3) einführbar sind und die Stranggießmaschine (1 ) kontinuierlich gießt, dadurch gekennzeichnet, dass zwischen der Stranggießmaschine (1 ) und der Walzstraße (3) ein Rollenherdofen (2) mit zumindest einer Rollenebene (24) , an dessen Eingang (12a) und / oder Ausgang (12b) eine Querteileinrichtung (14), nachfolgend eine Entzunderungseinrichtung (15) vorgesehen sind, dar- auf die Walzstraße (3) folgt und hinter der Walzstraße (3) eine Trenneinrichtung (16), eine Kühlstrecke (17) und Haspelanlagen (18) angeordnet sind.1 1. Casting mill for semi-endless rolling or continuous rolling of a cast metal or steel strand (1 a), which can be divided into partial lengths (20) in the solidified state if required and the partial lengths (20) in a roller hearth furnace (2) are heat-stable and heatable to the rolling temperature and are comparable and can be introduced into a rolling mill (3) and the continuous casting machine (1) continuously casts, characterized in that between the continuous casting machine (1) and the rolling train (3) is a roller hearth furnace (2) with at least one roller level (24), at the input (12a) and / or output (12b) of which a cross-cutting device (14), hereinafter a Descaling devices (15) are provided, followed by the rolling mill (3) and behind the rolling mill (3) a separating device (16), a cooling section (17) and coiler systems (18) are arranged.
12. Gießwalzanlage nach Anspruch 11 , dadurch gekennzeichnet, dass bei mindestens zwei Rollenebenen (24) schwenkbare Rollenbahnen (11) am Eingang (12a) und Ausgang (12b) des Rollenherdofens (2) , mit jeweils einer Biege- und / oder Richteinheit angeordnet sind.12. Casting-rolling plant according to claim 11, characterized in that at least two roller levels (24) pivotable roller tracks (11) at the entrance (12a) and exit (12b) of the roller hearth furnace (2), each with a bending and / or straightening unit ,
13. Gießwalzanlage nach einem der Ansprüche 1 1 oder 12, dadurch gekennzeichnet, dass Mehrfachlängen (21 ) auf einem einzigen Höhen-Niveau von dem Ausgang (9) der Stranggießmaschine (1 ) durch die Rollenbahn (1 1) des13. Casting mill according to one of claims 1 1 or 12, characterized in that multiple lengths (21) at a single height level from the output (9) of the continuous casting machine (1) through the roller conveyor (1 1) of
Rollenherdofens (2) bis in das Walzwerk (3a) einführbar sind. Roller hearth furnace (2) can be inserted into the rolling mill (3a).
EP03729965A 2002-07-06 2003-05-02 Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely separated as required after solidification Expired - Lifetime EP1519798B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10230512 2002-07-06
DE10230512 2002-07-06
DE10249704 2002-10-25
DE10249704A DE10249704A1 (en) 2002-07-06 2002-10-25 Process and casting rolling plant for semi-endless rolling or continuous rolling by casting a metal, in particular a steel strand, which is cross-divided after solidification if necessary
PCT/EP2003/004599 WO2004004938A1 (en) 2002-07-06 2003-05-02 Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely separated as required after solidification

Publications (2)

Publication Number Publication Date
EP1519798A1 true EP1519798A1 (en) 2005-04-06
EP1519798B1 EP1519798B1 (en) 2006-08-16

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EP03729965A Expired - Lifetime EP1519798B1 (en) 2002-07-06 2003-05-02 Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely separated as required after solidification

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US (2) US7152661B2 (en)
EP (1) EP1519798B1 (en)
CN (1) CN100415396C (en)
AT (1) ATE336308T1 (en)
AU (1) AU2003240590A1 (en)
BR (1) BR0311351A (en)
CA (1) CA2491676C (en)
DE (1) DE50304672D1 (en)
EG (1) EG23476A (en)
ES (1) ES2270037T3 (en)
MX (1) MXPA05000312A (en)
RU (1) RU2316401C2 (en)
TW (1) TWI288676B (en)
WO (1) WO2004004938A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI288676B (en) * 2002-07-06 2007-10-21 Sms Demag Ag Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely cut as required after solidification
US20120018113A1 (en) * 2004-12-03 2012-01-26 Joachim Schwellenbach CSP-continuous casting plant with an additional rolling line
CH697624B1 (en) * 2005-02-23 2008-12-31 Main Man Inspiration Ag Rolling device for an in-line rolling of a produced by strip casting, in particular twin-roll strip casting steel strip.
DE102008020412A1 (en) * 2007-08-24 2009-02-26 Sms Demag Ag Method and device for producing a metal strip by casting rolls
AT507475B1 (en) * 2008-10-17 2010-08-15 Siemens Vai Metals Tech Gmbh METHOD AND DEVICE FOR PRODUCING HOT-ROLLED SILICON STEEL ROLLING MATERIAL
CN101905247B (en) * 2010-07-23 2012-02-15 北京科技大学 Control method for head-tail temperature difference of semi-endless rolling super-long casting blank
DE102011004245A1 (en) * 2010-10-07 2012-04-12 Sms Siemag Ag Method and device for producing a metal strip by casting rolls
DE102010063279A1 (en) * 2010-12-16 2012-06-21 Sms Siemag Ag Rolling mill for tubular steel and thin strip production
CN102198451B (en) * 2011-04-15 2013-05-01 江阴市东顺机械有限公司 Sheet continuous casting and rolling forming machine
AT513298B1 (en) * 2012-08-20 2017-03-15 Primetals Technologies Austria GmbH Interstate area of a cast-rolled composite plant
AT512399B1 (en) 2012-09-10 2013-08-15 Siemens Vai Metals Tech Gmbh Method for producing a microalloyed tubular steel in a cast-rolled composite plant and microalloyed tubular steel
US8678074B1 (en) * 2013-03-05 2014-03-25 Rti International Metals, Inc. Continuous casting furnace for long ingot casting
EP3208673B1 (en) 2016-02-22 2019-06-05 Primetals Technologies Austria GmbH In-line calibration of the roller gap of a roller stand
EP3208006B1 (en) 2016-02-22 2019-04-03 Primetals Technologies Austria GmbH In-line roll changing device in simple roller frame design
DE102016216725A1 (en) 2016-09-05 2018-03-08 Sms Group Gmbh Method of designing a roller hearth furnace and a production plant comprising a roller hearth furnace designed for this purpose
EP3504013B1 (en) * 2016-11-10 2021-08-11 SMS Group GmbH Method for producing a metal strip in a cast-rolling installation
IT201700032906A1 (en) * 2017-03-24 2018-09-24 Danieli Off Mecc APPARATUS AND METHOD OF CHANGE OF DRIVE UNITS IN A CONTINUOUS CASTING MACHINE
IT201700067508A1 (en) * 2017-06-16 2018-12-16 Danieli Off Mecc CONTINUOUS CASTING METHOD AND ITS APPARATUS
IT201800004170A1 (en) * 2018-04-03 2019-10-03 CONTINUOUS CASTING AND LAMINATION PLANT FOR THE PRODUCTION OF METALLURGIC PRODUCTS
CN110385408B (en) * 2019-06-21 2021-11-26 敬业钢铁有限公司 Casting and rolling integrated process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398396B (en) 1993-02-16 1994-11-25 Voest Alpine Ind Anlagen METHOD FOR PRODUCING A TAPE, PRE-STRIP OR A LAM
US5396695A (en) * 1994-03-22 1995-03-14 Danieli & C. Officine Meccaniche Spa Method of controlling a time period between continuously cast slabs entering a rolling stand
JP3161917B2 (en) * 1994-09-30 2001-04-25 株式会社日立製作所 Thin slab continuous casting machine and thin slab continuous casting method
IT1280207B1 (en) * 1995-08-02 1998-01-05 Danieli Off Mecc CONTINUOUS CASTING PROCESS FOR LONG PRODUCTS AND RELATED CONTINUOUS CASTING LINE
EP0893168B1 (en) * 1997-07-23 2002-05-22 SMS Demag AG Method for producing hot strip of 0.5 mm thickness in a hot strip mill
DE10047044A1 (en) * 2000-09-22 2002-04-25 Sms Demag Ag Processes and plants for the production of steel strips and sheets
TWI288676B (en) * 2002-07-06 2007-10-21 Sms Demag Ag Method and casting roller plant for the semi-endless or endless rolling by casting of a metal in particular a steel strip which may be transversely cut as required after solidification

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004004938A1 *

Also Published As

Publication number Publication date
EP1519798B1 (en) 2006-08-16
EG23476A (en) 2005-11-19
US7152661B2 (en) 2006-12-26
TW200405833A (en) 2004-04-16
RU2005102828A (en) 2005-07-20
ES2270037T3 (en) 2007-04-01
RU2316401C2 (en) 2008-02-10
ATE336308T1 (en) 2006-09-15
BR0311351A (en) 2005-02-22
MXPA05000312A (en) 2005-04-25
CA2491676C (en) 2010-12-14
CN100415396C (en) 2008-09-03
CA2491676A1 (en) 2004-01-15
WO2004004938A1 (en) 2004-01-15
US7478664B2 (en) 2009-01-20
DE50304672D1 (en) 2006-09-28
CN1665611A (en) 2005-09-07
US20060243420A1 (en) 2006-11-02
TWI288676B (en) 2007-10-21
US20050251989A1 (en) 2005-11-17
AU2003240590A1 (en) 2004-01-23

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