EP3507030A1 - Continuously operable production plant and method for operating the production plant when there is a fault - Google Patents

Continuously operable production plant and method for operating the production plant when there is a fault

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Publication number
EP3507030A1
EP3507030A1 EP17755503.4A EP17755503A EP3507030A1 EP 3507030 A1 EP3507030 A1 EP 3507030A1 EP 17755503 A EP17755503 A EP 17755503A EP 3507030 A1 EP3507030 A1 EP 3507030A1
Authority
EP
European Patent Office
Prior art keywords
slab
hearth furnace
roller hearth
belt
production plant
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
EP17755503.4A
Other languages
German (de)
French (fr)
Other versions
EP3507030B1 (en
Inventor
Christoph Klein
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 Group GmbH
Original Assignee
SMS Group GmbH
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Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3507030A1 publication Critical patent/EP3507030A1/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
    • B21B1/463—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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/004—Transverse moving

Definitions

  • the invention is directed to a production plant, the series in a roller hearth furnace upstream Dünnbrammenstrangg matterstrom, the cast strand or at least one separated part of the casting length receiving roller hearth furnace and the heated or kept in the roller hearth furnace cast strand or the at least one of them separated part length ausalzende, the Roller hearth furnace downstream rolling mill with associated coiler comprises.
  • the invention is directed to a method for operating such a production plant.
  • Production plants which include in their production line in series a thin slab caster and a roller hearth furnace and a subsequent rolling mill with associated coiler, are known as thin slab thin-strip caster under the name CSP plants or under the name CEM (Compact Endless Cast & Rolling Mill) .
  • CSP plants or under the name CEM (Compact Endless Cast & Rolling Mill)
  • Such systems can be operated in continuous operation, in which a continuous production of the rolled metal strip takes place. In this continuous operation, the cast thin slab is then fed continuously to the roller hearth furnace and the rolling train.
  • the problem with the continuous operation is that this is a "rigid" connection between continuous casting and rolling mill, the temperature in the entire system, especially in the finishing mill in the continuous process depending on the casting speed can not always be kept at the necessary level.
  • Such systems have therefore also been further developed so that with them a batch operation is possible, in which by separation of the cast thin slab decoupling between the casting / caster and the rolling mill and thus a discontinuous
  • Such a production plant is known from DE 10 2008 020 412 A1.
  • this plant also already has two slab or belt separation devices and one kiln ferry system.
  • the thin slab casting strand is first fed to a first rolling stand of the rolling train, which is then followed by a first slab or strip separating device.
  • the task of the furnace is to heat the slab after the cut and to equalize the temperature of the slab.
  • the slab is drawn into the mill at a higher speed than the casting speed.
  • a Ofenfährensystem followed by a roller hearth furnace with a downstream second slab or belt separating device, which is arranged upstream of a second scaffolding group of the rolling train.
  • the invention is the object of the invention to provide a solution that makes it possible to operate in a continuous operation Thin slab caster to provide a slab buffer capacity in the event of an accident causing a stoppage of slab or belt transport. This object is achieved by a production plant according to claim 1 and a method according to claim 3.
  • a production plant which in series a roller hearth furnace upstream Dünnbrammenstranggkenstrom, the cast strand or at least one separated part of the cast strand receiving roller hearth furnace and the heated or kept in the roller hearth furnace cast strand or the at least one part of which separated ausselende, the roller hearth furnace downstream Rolling mill with associated coiler plant, wherein the continuous casting and the rolling mill are operable in an endless operating mode, and wherein the outlet side of the roller hearth furnace laterally arranged to the roller hearth furnace Ofenfumblerensystem assigned and the rolling mill a first scaffolding group and a second spaced scaffolding group with a between first and second scaffold group arranged heating device, in particular induction heating, and wherein further in the slab inlet direction upstream of the Rollenhe rdofen a first slab or belt separating device, in particular a belt scissors, preferably a pendulum scissors arranged and arranged in the slab outlet direction downstream of the roller hearth furnace and in front of the first scaffolding
  • the production plant according to the invention is characterized by the arrangement and positioning of four slab or belt separating devices, in front of the roller hearth furnace, in the roller hearth furnace, after the roller hearth furnace and before the first stand of the rolling train and after the first stand of the rolling train and before the second stand of the rolling train are arranged.
  • four slab or belt separating devices namely the first and the fourth slab and belt separating device are designed as belt shears, so that here scrap particles to be disposed of can be cut.
  • the other two, namely the second and the third slab or belt separating device are, however, designed as a flame cutting device, so that here between the remaining slab pieces a gap is cut, which then allows the remaining Branceeillengths oscillating in the roller hearth furnace during the accident period to drive back and forth.
  • the arrangement of the four slab or belt separating devices at defined positions and their activation is important at first Standstill of the conveyor or belt transport during an accident in the production plant.
  • the invention provides that the kiln ferry system is associated with a roller conveyor with subsequent stacking device.
  • the kiln ferry system is associated with a roller conveyor with subsequent stacking device.
  • the method according to the invention provides in an embodiment that, when a maximum permissible slab deposit time is exceeded, the cut partial lengths are discharged laterally out of the roller hearth furnace by means of the kiln ferry system and fed via the associated roller conveyor to the subsequent stacking device.
  • a further advantageous embodiment of the method according to the invention is characterized in that cut scrap pieces with the first and fourth slab or belt separating device and these are removed from the production line of the production plant.
  • the method according to the invention is also distinguished by the fact that pieces of such a length are cut out of the thin slab or of at least one part length or strip separated therefrom by means of the second and third slab or strip separating device, that the respective remaining part lengths of the thin slab during the duration of the accident in the roller hearth furnace oscillating back and forth can be driven.
  • FIG. 1 shows a schematic representation of the arrangement of various production plant parts in the production line of the production plant according to the invention.
  • the FIGURE shows a schematic side view of a trained as cast rolling mill production plant comprising a thin slab continuous casting or thin slab continuous casting machine 1, in which a casting strand 1 a is produced, a roller hearth furnace 2 and a rolling mill 3 with associated ancillary facilities.
  • These devices of the thin slab continuous casting machine or thin slab continuous casting machine 1 are arranged in series one after the other and form the production line of the continuous slab caster or machine 1.
  • a distributor vessel 4 is fed from a ladle 1 to which a continuous casting mold 5, a support roller frame 6 with a bending unit 7 and a straightening machine are arranged downstream.
  • a first slab or belt separator 10 is arranged upstream of the roller hearth furnace 2 in the slab running direction. This arranged behind the casting machine 1 and before the roller hearth furnace 2 first slab or belt separator 10 is designed as pendulum scissors.
  • the rolling train 3 begins after a second slab or belt separating device 14, which is arranged downstream in the direction of slab after the roller hearth furnace 2 and in front of a first scaffolding group 12 of the rolling mill 3 and formed as a flame cutting device or flame cutting device.
  • the first stand group 12 of the rolling train 3 which also has a second stand group 13 spaced from the first stand group 12 and a heating device 18, in particular induction heating, arranged between the first and second stand group 12, 13 Rolling stands of the second stand group 13 arranged in a conventional manner a separator 19, a cooling section 20 and two coiling machines 21.
  • a second slab or belt separating device 14 which is arranged downstream in the direction of slab after the roller hearth furnace 2 and in front of a first scaffolding group 12 of the rolling mill 3 and formed as a flame cutting device or flame cutting device.
  • the first stand group 12 of the rolling train 3 which also has a second stand group 13 spaced from the first stand group 12 and a heating device 18, in particular induction heating, arranged between the first and second stand
  • the cast strand 1 a or at least one of them separated part length receiving roller hearth furnace 2 is divided into three equal sections 2a, 2b and 2c and designed for receiving a desired thin slab length or a separated part of the casting strand 1 a.
  • the outlet side of the roller hearth furnace 2 is associated with a laterally arranged to this Ofenfährsystem 15, which comprises a furnace ferry 16 in the last third of the length of the roller hearth furnace 2, by means of which separated in the roller hearth furnace 2 partial lengths of a thin slab can be discharged laterally from the roller hearth furnace 2.
  • a third slab or belt separating device 17 is arranged in the outlet region of the roller hearth furnace 2 in front of a longitudinal section of the roller hearth furnace 2 corresponding preferably to at least approximately the longitudinal extent of the kiln ferry 16.
  • This third slab or belt separating device 17 is likewise designed as a flame cutting device or flame cutting device and arranged in front of the furnace ferry 16 in the rear region of the roller hearth furnace 2, viewed in the transport direction of the roller hearth furnace 2 or slab or belt running direction.
  • the kiln transport system 15 is associated with a roller conveyor 22 with subsequent stacking device 23.
  • a fourth slab or strip separating device 24 is in the strip running direction on the outlet side of the first stand group 12 of the rolling mill 3 before entering the Heating device 18 is arranged.
  • This fourth Brannnnen- or belt separating device 24 is designed as a drum shears.
  • the production plant is used for endless rolling or batch rolling by casting of liquid metal, in particular of liquid steel, to the casting strand 1 a, which is divided after its solidification in the first slab or belt separator 10 in G confusestrang part lengths and in the roller hearth furnace second is transported.
  • the respective G fauxstrang part length is heated in the roller hearth furnace 2, uniformized in temperature and brought to rolling temperature for rolling in the rolling mill 3. During this time, continuous casting continues without interruption.
  • the first to fourth slab or belt separator 10, 14, 17, 24 are available and allow in their interaction the use of the roller hearth furnace 2 as slabs buffer capacity. If, in the event of a fault, the thin slab separated as a partial length from the cast strand 1a is stopped, all four (first to fourth) slab or strip separating devices 10, 14, 17 and 24 are activated and the thin slab is moved to four, in each case the position of a slab. or band separator corresponding positions separated.
  • the first and fourth, each designed as a band scissors slab or belt separating device 10, 24 each cut a piece of scrap, which is then disposed of via the scrap removal.
  • each formed as a flame cutting device second and third slab or belt separator 14, 17 a gap between the respective head and end of the slab pieces, so that these pieces of slab for a while in the roller hearth furnace 2 oscillating back and forth can be driven.
  • a gap between the respective head and end of the slab pieces, so that these pieces of slab for a while in the roller hearth furnace 2 oscillating back and forth can be driven.
  • the second slab or belt separating device 14 designed as a flame cutting device, it is avoided in any case that a slab piece greater than a simple slab length must be fed to the rolling train 3. It is necessary to avoid this since the high-speed scissors (separating device 19) arranged in front of the reel or the coiler 21 are designed for continuous operation with strip thicknesses ⁇ 4.0 mm. In the case of disposal of an overlong slab from the roller hearth furnace 2, these scissors would have to be activated to cut to coil length. The limitation to a maximum strip thickness of 4.0 mm can not be guaranteed after an accident.

Abstract

In the case of a production plant which comprises in series a thin-slab continuous casting plant (1), which is arranged upstream of a roller hearth furnace (2), the roller hearth furnace (2) and a rolling mill (3), which is arranged downstream of the roller hearth furnace (2) and has an assigned reeling plant (21), wherein the continuous casting plant (1) and the rolling mill (3) can be operated in a continuous operating mode, the intention is to provide a solution that allows a slab buffer capacity to be provided for a continuously operated thin slab continuous casting plant when there is a fault causing a standstill in the transport of the slab or strip. This is achieved by the production plant having four slab or strip cutting devices (10, 14, 17, 24), which are arranged upstream and downstream of the roller hearth furnace (2), in a section along the length of the roller hearth furnace (2) and on the outlet side of a first separate roll line (12) of the rolling mill (3).

Description

Im Endlosbetrieb betreibbare Produktionsanlage und Verfahren zum Betrieb der Produktionsanlage im Störfall  In continuous operation operable production plant and method for operating the production plant in case of failure
Die Erfindung richtet sich auf eine Produktionsanlage, die in Reihe eine einem Rollenherdofen vorgeschaltete Dünnbrammenstranggießanlage, den den Gießstrang oder mindestens eine davon abgetrennte Teillänge des Gießstrangs aufnehmenden Rollenherdofen und eine den in dem Rollenherdofen erwärmten oder warmgehaltenen Gießstrang oder die mindestens eine davon abgetrennte Teillänge auswalzende, dem Rollenherdofen nachgeschaltete Walzstraße mit zugeordneter Haspelanlage umfasst. The invention is directed to a production plant, the series in a roller hearth furnace upstream Dünnbrammenstranggießanlage, the cast strand or at least one separated part of the casting length receiving roller hearth furnace and the heated or kept in the roller hearth furnace cast strand or the at least one of them separated part length ausalzende, the Roller hearth furnace downstream rolling mill with associated coiler comprises.
Weiterhin richtet sich die Erfindung auf ein Verfahren zum Betrieb einer solchen Produktionsanlage. Furthermore, the invention is directed to a method for operating such a production plant.
Produktionsanlagen, die in ihrer Produktionslinie in Reihe eine Dünnbrammenstranggießanlage und einen Rollenherdofen und eine nachfolgende Walzstraße mit zugeordneter Haspelanlage umfassen, sind als Dünnbrammen- Dünnband-Gießwalzanlagen unter der Bezeichnung CSP-Anlagen oder auch unter der Bezeichnung CEM (Compact Endless Cast & Rolling Mill) bekannt. Derartige Anlagen können im Endlosbetrieb, bei welchem eine kontinuierliche Herstellung des gewalzten Metallbandes erfolgt, betrieben werden. Bei diesem Endlosbetrieb wird dann auch die gegossene Dünnbramme kontinuierlich dem Rollenherdofen und der Walzstraße zugeführt. Problematisch bei dem Endlosbetrieb ist, dass dadurch eine „starre" Verbindung zwischen Stranggießanlage und Walzstraße besteht, wobei die Temperatur in der Gesamtanlage, insbesondere in dem Fertigwalzwerk im Endlosverfahren je nach Gießgeschwindigkeit nicht immer auf dem notwendigen Niveau gehalten werden kann. Derartige Anlagen sind daher auch dahingehend weiterentwickelt worden, dass mit ihnen ein Batch-Betrieb möglich ist, bei welchem durch Trennung der gegossenen Dünnbramme eine Entkopplung zwischen der Gießanlage/Gießmaschine und der Walzstraße erfolgt und dadurch eine diskontinuierliche Herstellung des Metallbandes möglich ist. Production plants which include in their production line in series a thin slab caster and a roller hearth furnace and a subsequent rolling mill with associated coiler, are known as thin slab thin-strip caster under the name CSP plants or under the name CEM (Compact Endless Cast & Rolling Mill) , Such systems can be operated in continuous operation, in which a continuous production of the rolled metal strip takes place. In this continuous operation, the cast thin slab is then fed continuously to the roller hearth furnace and the rolling train. The problem with the continuous operation is that this is a "rigid" connection between continuous casting and rolling mill, the temperature in the entire system, especially in the finishing mill in the continuous process depending on the casting speed can not always be kept at the necessary level. Such systems have therefore also been further developed so that with them a batch operation is possible, in which by separation of the cast thin slab decoupling between the casting / caster and the rolling mill and thus a discontinuous production of the metal strip is possible.
Eine solche Produktionsanlage ist aus der DE 10 2008 020 412 A1 bekannt. Neben den in Reihe angeordneten Produktionsanlagenteilen Gießmaschine, Rollenherdofen und Walzstraße weist diese Anlage auch bereits zwei Brammen- oder Bandtrenneinrichtungen sowie ein Ofenfährensystem auf. In der Produktionslinie wird der Dünnbrammengießstrang zunächst einem ersten Walzgerüst der Walzstraße zugeführt, dem dann eine erste Brammen- oder Bandtrenneinrichtung nachgeschaltet ist. Die Aufgabe des Ofens besteht darin, die Bramme nach dem Schnitt aufzuheizen und die Temperatur der Bramme zu vergleichmäßigen. Danach wird die Bramme mit höherer Geschwindigkeit als die Gießgeschwindigkeit in das Walzwerk eingezogen. Es folgt dann ein Ofenfährensystem gefolgt von einem Rollenherdofen mit einer nachgeschalteten zweiten Brammen- oder Bandtrenneinrichtung, die einlaufseitig zu einer zweiten Gerüstgruppe der Walzstraße angeordnet ist. Mit dieser Produktionsanlage ist es möglich, Brammen aus der Linie herauszufahren, zu speichern oder zwischenzulagern. Bei einem Endlosbetrieb ist eine solche Handhabung der Dünnbrammen aber nicht möglich. Diese führt dazu, dass bei Störfällen, bei denen es zu einem Stillstand des Dünnbrammentransportes kommt, eine Beschickung der Ofenfähren des Ofenfährensystems nicht möglich ist, da sich dann bereits ein zu langes Brammenteilstück im Rollenherdofen befindet. Such a production plant is known from DE 10 2008 020 412 A1. In addition to the caster, roller hearth furnace and rolling train, which are arranged in series, this plant also already has two slab or belt separation devices and one kiln ferry system. In the production line, the thin slab casting strand is first fed to a first rolling stand of the rolling train, which is then followed by a first slab or strip separating device. The task of the furnace is to heat the slab after the cut and to equalize the temperature of the slab. Thereafter, the slab is drawn into the mill at a higher speed than the casting speed. This is followed by a Ofenfährensystem followed by a roller hearth furnace with a downstream second slab or belt separating device, which is arranged upstream of a second scaffolding group of the rolling train. With this production plant, it is possible to move slabs out of the line, to store them or to temporarily store them. In a continuous operation, however, such handling of the thin slabs is not possible. This leads to the fact that in case of incidents in which there is a stoppage of the thin slab transport, a loading of the furnace ferries of the kiln ferry system is not possible because then there is already too long a piece of sludge in the roller hearth furnace.
Eine derartige Produktionsanlage ohne Ofenfährensystem ist aus der EP 2 957 359 A1 bekannt. Der Erfindung liegt demgegenüber die Aufgabe zugrunde, eine Lösung zu schaffen, die es ermöglicht, bei einer im Endlosbetrieb betreibbaren Dünnbrammenstranggießanlage im Falle eines einen Stillstand des Brammenoder Bandtransportes verursachenden Störfalls eine Brammenpufferkapazität bereitzustellen. Diese Aufgabe wird durch eine Produktionsanlage gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 3 gelöst. Such a production plant without oven-ferry system is known from EP 2 957 359 A1. The invention is the object of the invention to provide a solution that makes it possible to operate in a continuous operation Thin slab caster to provide a slab buffer capacity in the event of an accident causing a stoppage of slab or belt transport. This object is achieved by a production plant according to claim 1 and a method according to claim 3.
Erfindungsgemäß wird eine Produktionsanlage vorgeschlagen, die in Reihe eine einem Rollenherdofen vorgeschaltete Dünnbrammenstranggießanlage, den den Gießstrang oder mindestens eine davon abgetrennte Teillänge des Gießstrangs aufnehmenden Rollenherdofen und eine den in dem Rollenherdofen erwärmten oder warmgehaltenen Gießstrang oder die mindestens eine davon abgetrennte Teillänge auswalzende, dem Rollenherdofen nachgeschaltete Walzstraße mit zugeordneter Haspelanlage umfasst, wobei die Stranggießanlage und die Walzstraße in einem Endlos-Betriebsmodus betreibbar sind, und wobei der Auslaufseite des Rollenherdofens ein seitlich zum Rollenherdofen angeordnetes Ofenfährensystem zugeordnet und die Walzstraße eine erste Gerüstgruppe und eine dazu beabstandete zweite Gerüstgruppe mit einer zwischen erster und zweiter Gerüstgruppe angeordneten Heizeinrichtung, insbesondere Induktionsheizung, aufweist und wobei weiterhin in Brammeneinlaufrichtung einlaufseitig vor dem Rollenherdofen eine erste Brammen- oder Bandtrenneinrichtung, insbesondere eine Bandschere, vorzugsweise eine Pendelschere, angeordnet und in Brammenauslaufrichtung auslaufseitig nach dem Rollenherdofen und vor der ersten Gerüstgruppe der Walzstraße eine zweite Brammen- oder Bandtrenneinrichtung angeordnet ist, wobei die zweite Brammenoder Bandtrenneinrichtung als Brennschneidvorrichtung ausgebildet ist und wobei im auslaufseitigen Bereich des Rollenherdofens vor einem, vorzugsweise zumindest in etwa, der Längserstreckung einer Ofenfähre des Ofenfährensystems entsprechenden Längenabschnitt des Rollenherdofens eine als Brennschneidvorrichtung ausgebildete dritte Brammen- oder Bandtrenneinrichtung angeordnet und dass in Bandlaufrichtung auslaufseitig der ersten Gerüstgruppe der Walzstraße vor dem Einlauf in die Heizeinrichtung eine vierte Brammen- oder Bandtrenneinrichtung, insbesondere eine Bandschere, vorzugsweise eine Trommelschere, angeordnet ist. Bezüglich des erfindungsgemäßen Verfahrens zum Betrieb der Produktionsanlage wird vorgeschlagen, dass bei Stillstand des Brammen- oder Bandtransportes während eines Störfalls in der Produktionsanlage alle der ersten bis vierten Brammen- oder Bandtrenneinrichtungen aktiviert und die Dünnbramme oder die mindestens eine davon abgetrennte Teillänge und das Band an den Positionen der ersten bis vierten Brammen- oder Bandtrenneinrichtung getrennt werden. According to the invention a production plant is proposed, which in series a roller hearth furnace upstream Dünnbrammenstranggießanlage, the cast strand or at least one separated part of the cast strand receiving roller hearth furnace and the heated or kept in the roller hearth furnace cast strand or the at least one part of which separated ausselende, the roller hearth furnace downstream Rolling mill with associated coiler plant, wherein the continuous casting and the rolling mill are operable in an endless operating mode, and wherein the outlet side of the roller hearth furnace laterally arranged to the roller hearth furnace Ofenfährensystem assigned and the rolling mill a first scaffolding group and a second spaced scaffolding group with a between first and second scaffold group arranged heating device, in particular induction heating, and wherein further in the slab inlet direction upstream of the Rollenhe rdofen a first slab or belt separating device, in particular a belt scissors, preferably a pendulum scissors arranged and arranged in the slab outlet direction downstream of the roller hearth furnace and in front of the first scaffolding group of the rolling mill a second slab or belt separator, wherein the second slab or belt separator is designed as a flame cutting device and wherein arranged in the outlet side region of the roller hearth furnace in front of a, preferably at least approximately, the longitudinal extent of a Ofenfähre the kiln ferry system corresponding length section of the roller hearth furnace designed as a flame cutting device third slab or belt separating device and that in the strip running direction outlet side of the first scaffolding group the rolling mill before the inlet to the heater, a fourth slab or belt separating device, in particular a belt scissors, preferably a drum shears, is arranged. With regard to the method according to the invention for the operation of the production plant is proposed that at standstill of slab or belt transport during an accident in the production all of the first to fourth slab or belt separating enabled and the thin slab or at least one of them separated part length and the tape to the Positions of the first to fourth slab or belt separator are separated.
Die erfindungsgemäße Produktionsanlage ist also durch die Anordnung und Positionierung von vier Brammen- oder Bandtrenneinrichtungen gekennzeichnet, die vor dem Rollenherdofen, im Rollenherdofen, nach dem Rollenherdofen und vor dem ersten Gerüst der Walzstraße sowie nach dem ersten Gerüst der Walzstraße und vor dem zweiten Gerüst der Walzstraße angeordnet sind. Damit ist es im Falle eines Störfalles, bei welchem der Dünnbrammen- oder Bandtransport zum Stillstand kommt, möglich, die Bramme bzw. das Band an diesen Positionen zu trennen. Hierbei sind zwei der vier Brammen- oder Bandtrenneinrichtungen, nämlich die erste und die vierte Brammen- und Bandtrenneinrichtung als Bandscheren ausgebildet, so dass hier zu entsorgende Schrottteile geschnitten werden können. Die beiden anderen, nämlich die zweite und die dritte Brammenoder Bandtrenneinrichtung sind hingegen als Brennschneidvorrichtungen ausgebildet, so dass hier zwischen den verbleibenden Brammenstücken eine Lücke geschnitten wird, die es dann ermöglicht, die verbleibenden Brammenteillängen während der Störfallzeit oszillierend im Rollenherdofen hin und her zu fahren. Thus, the production plant according to the invention is characterized by the arrangement and positioning of four slab or belt separating devices, in front of the roller hearth furnace, in the roller hearth furnace, after the roller hearth furnace and before the first stand of the rolling train and after the first stand of the rolling train and before the second stand of the rolling train are arranged. Thus, it is possible in the event of a fault, in which the thin slab or belt transport comes to a standstill, to separate the slab or the belt at these positions. In this case, two of the four slab or belt separating devices, namely the first and the fourth slab and belt separating device are designed as belt shears, so that here scrap particles to be disposed of can be cut. The other two, namely the second and the third slab or belt separating device are, however, designed as a flame cutting device, so that here between the remaining slab pieces a gap is cut, which then allows the remaining Brammenteillengths oscillating in the roller hearth furnace during the accident period to drive back and forth.
Erfindungsgemäß wichtig ist also zunächst die Anordnung der vier Brammen- oder Bandtrenneinrichtungen an definierten Positionen und deren Aktivierung bei Stillstand des Brannnnen- oder Bandtransportes während eines Störfalls in der Produktionsanlage. Thus, according to the invention, the arrangement of the four slab or belt separating devices at defined positions and their activation is important at first Standstill of the conveyor or belt transport during an accident in the production plant.
In vorteilhafter Ergänzung und Weiterbildung der Produktionsanlage sieht die Erfindung vor, dass dem Ofenfährensystem ein Rollengang mit nachfolgender Stapeleinrichtung zugeordnet ist. Dies ermöglicht es, in den Fällen, in denen die Störfallzeiten so lang werden, dass maximal zulässige Brammeneinliegezeiten überschritten würden, die geschnittenen Teillängen mittels einer oder mehrerer Ofenfähre(n) des Ofenfährensystems aus dem Rollenherdofen ausgetragen und über den zugeordneten Rollengang der nachfolgenden Stapeleinrichtung zugeführt werden. Insofern sieht das erfindungsgemäße Verfahren in Ausgestaltung vor, dass bei Überschreiten einer maximal zulässigen Brammeneinliegezeit die geschnittenen Teillängen mittels des Ofenfährensystems seitlich aus dem Rollenherdofen ausgetragen und über den zugeordneten Rollengang der nachfolgenden Stapeleinrichtung zugeführt werden. In an advantageous addition and development of the production plant, the invention provides that the kiln ferry system is associated with a roller conveyor with subsequent stacking device. This makes it possible, in cases where the accident times are so long that the maximum allowable slab nesting times would be exceeded, the cut partial lengths discharged by means of one or more furnace ferry (s) of Ofenfährensystems from the roller hearth furnace and fed through the associated roller conveyor of the subsequent stacking device , In this respect, the method according to the invention provides in an embodiment that, when a maximum permissible slab deposit time is exceeded, the cut partial lengths are discharged laterally out of the roller hearth furnace by means of the kiln ferry system and fed via the associated roller conveyor to the subsequent stacking device.
Eine weitere vorteilhafte Ausgestaltung des erfindungsgemäßen Verfahrens zeichnet sich dadurch aus, dass mit der ersten und vierten Brammen- oder Bandtrenneinrichtung Schrottstücke geschnitten und diese aus der Produktionslinie der Produktionsanlage entfernt werden. A further advantageous embodiment of the method according to the invention is characterized in that cut scrap pieces with the first and fourth slab or belt separating device and these are removed from the production line of the production plant.
Schließlich zeichnet sich das erfindungsgemäße Verfahren auch dadurch aus, dass mittels der zweiten und dritten Brammen- oder Bandtrenneinrichtung Stücke einer solchen Länge aus der Dünnbramme oder der mindestens einen davon abgetrennten Teillänge oder dem Band herausgeschnitten werden, dass die jeweils verbleibenden Teillängen der Dünnbramme während der Dauer des Störfalls im Rollenherdofen oszillierend hin und her gefahren werden können. Finally, the method according to the invention is also distinguished by the fact that pieces of such a length are cut out of the thin slab or of at least one part length or strip separated therefrom by means of the second and third slab or strip separating device, that the respective remaining part lengths of the thin slab during the duration of the accident in the roller hearth furnace oscillating back and forth can be driven.
Die Erfindung ist nachstehend anhand der einzigen Figur beispielhaft näher erläutert. Diese Figur zeigt in schematischer Darstellung die Anordnung verschiedener Produktionsanlagenteile in der Produktionslinie der erfindungsgemäßen Produktionsanlage. Die Fig. zeigt in schematischer Seitenansicht eine als Gießwalzanlage ausgebildete Produktionsanlage, die eine Dünnbrammen-Stranggießanlage oder Dünnbrammen-Stranggießmaschine 1 , in der ein Gießstrang 1 a erzeugt wird, einen Rollenherdofen 2 und eine Walzstraße 3 mit zugehörigen Nebeneinrichtungen umfasst. Diese Einrichtungen der Dünnbrammen- Stranggießanlage oder Dünnbrammen-Stranggießmaschine 1 sind in Reihe hintereinander angeordnet und bilden die Produktionslinie der Dünnbrammen- Stranggießanlage oder -maschine 1 aus. The invention is explained in more detail below by way of example with reference to the single FIGURE. This figure shows a schematic representation of the arrangement of various production plant parts in the production line of the production plant according to the invention. The FIGURE shows a schematic side view of a trained as cast rolling mill production plant comprising a thin slab continuous casting or thin slab continuous casting machine 1, in which a casting strand 1 a is produced, a roller hearth furnace 2 and a rolling mill 3 with associated ancillary facilities. These devices of the thin slab continuous casting machine or thin slab continuous casting machine 1 are arranged in series one after the other and form the production line of the continuous slab caster or machine 1.
In der dem Rollenherdofen 2 vorgeschalteten Dünnbrammen-Stranggießmaschine 1 wird aus einer Gießpfanne 1 1 ein Verteilergefäß 4 gespeist, dem eine Stranggießkokille 5, ein Stützrollengerüst 6 mit eine Biegeeinheit 7 und eine Richtmaschine nachgeordnet sind. Am Ausgang 9 der Dünnbrammen- Stranggießanlage oder Dünnbrammen-Stranggießmaschine 1 ist in Brammenlaufrichtung einlaufseitig vor dem Rollenherdofen 2 eine erste Brammen- oder Bandtrenneinrichtung 10 angeordnet. Diese hinter der Gießmaschine 1 und vor dem Rollenherdofen 2 angeordnete erste Brammen- oder Bandtrenneinrichtung 10 ist als Pendelschere ausgebildet. In the roller hearth furnace 2 upstream thin slab continuous casting 1 1, a distributor vessel 4 is fed from a ladle 1 to which a continuous casting mold 5, a support roller frame 6 with a bending unit 7 and a straightening machine are arranged downstream. At the outlet 9 of the continuous slab caster or thin slab continuous casting machine 1, a first slab or belt separator 10 is arranged upstream of the roller hearth furnace 2 in the slab running direction. This arranged behind the casting machine 1 and before the roller hearth furnace 2 first slab or belt separator 10 is designed as pendulum scissors.
Die Walzstraße 3 beginnt nach einer zweiten Brammen- oder Bandtrenneinrichtung 14, die in Brammenlaufrichtung auslaufseitig nach dem Rollenherdofen 2 und vor einer ersten Gerüstgruppe 12 der Walzstraße 3 angeordnet und als Brennschneideinrichtung oder Brennschneidvorrichtung ausgebildet ist. Darauf folgt die erste Gerüstgruppe 12 der Walzstraße 3, die zudem eine zur ersten Gerüstgruppe 12 beabstandete zweite Gerüstgruppe 13 und eine zwischen erster und zweiter Gerüstgruppe 12,13 angeordnete Heizeinrichtung 18, insbesondere Induktionsheizung, sowie hinter den Walzgerüsten der zweiten Gerüstgruppe 13 in üblicher Weise angeordnet eine Trenneinrichtung 19, eine Kühlstrecke 20 und zwei Haspelanlagen 21 aufweist. In der dem Rollenherdofen 2 nachgeschalteten Walzstraße 3 wird der in dem Rollenherdofen 2 erwärmte oder warmgehaltene Gießstrang 1 a oder eine mittels der ersten Brammen- oder Bandtrenneinrichtung 10 davon abgetrennte Teillänge ausgewalzt. The rolling train 3 begins after a second slab or belt separating device 14, which is arranged downstream in the direction of slab after the roller hearth furnace 2 and in front of a first scaffolding group 12 of the rolling mill 3 and formed as a flame cutting device or flame cutting device. This is followed by the first stand group 12 of the rolling train 3, which also has a second stand group 13 spaced from the first stand group 12 and a heating device 18, in particular induction heating, arranged between the first and second stand group 12, 13 Rolling stands of the second stand group 13 arranged in a conventional manner a separator 19, a cooling section 20 and two coiling machines 21. In the roller hearth furnace 2 downstream rolling mill 3 of the heated in the roller hearth furnace 2 or kept warm cast strand 1 a or a separated by means of the first slab or belt separating device 10 part length thereof is rolled.
Der den Gießstrang 1 a oder mindestens eine davon abgetrennte Teillänge aufnehmenden Rollenherdofen 2 ist in drei gleichlange Teilbereiche 2a, 2b und 2c aufgeteilt und für die Aufnahme einer gewünschten Dünnbrammenlänge oder einer davon abgetrennten Teillänge des Gießstrangs 1 a ausgelegt. Der Auslaufseite des Rollenherdofens 2 ist ein seitlich zu diesem angeordnetes Ofenfährsystem 15 zugeordnet, das im Bereich des letzten Drittels des Länge des Rollenherdofens 2 eine Ofenfähre 16 umfasst, mittels welcher im Rollenherdofen 2 abgetrennte Teillängen einer Dünnbramme seitlich aus dem Rollenherdofen 2 ausgetragen werden können. Um derartige Teillängen schneiden zu können, ist im Auslaufbereich des Rollenherdofens 2 vor einem, vorzugsweise zumindest in etwa, der Längenerstreckung der Ofenfähre 16 entsprechenden Längenabschnitt des Rollenherdofens 2 eine dritte Brammen- oder Bandtrenneinrichtung 17 angeordnet. Diese dritte Brammen- oder Bandtrenneinrichtung 17 ist ebenfalls als Brennschneideinrichtung oder Brennschneidvorrichtung ausgebildet und im in der Transportrichtung des Rollenherdofens 2 bzw. Brammen- oder Bandlaufrichtung betrachtet hinteren Bereich des Rollenherdofens 2 vor der Ofenfähre 16 angeordnet. The cast strand 1 a or at least one of them separated part length receiving roller hearth furnace 2 is divided into three equal sections 2a, 2b and 2c and designed for receiving a desired thin slab length or a separated part of the casting strand 1 a. The outlet side of the roller hearth furnace 2 is associated with a laterally arranged to this Ofenfährsystem 15, which comprises a furnace ferry 16 in the last third of the length of the roller hearth furnace 2, by means of which separated in the roller hearth furnace 2 partial lengths of a thin slab can be discharged laterally from the roller hearth furnace 2. In order to be able to cut such partial lengths, a third slab or belt separating device 17 is arranged in the outlet region of the roller hearth furnace 2 in front of a longitudinal section of the roller hearth furnace 2 corresponding preferably to at least approximately the longitudinal extent of the kiln ferry 16. This third slab or belt separating device 17 is likewise designed as a flame cutting device or flame cutting device and arranged in front of the furnace ferry 16 in the rear region of the roller hearth furnace 2, viewed in the transport direction of the roller hearth furnace 2 or slab or belt running direction.
Dem Ofenfährsystem 15 ist ein Rollengang 22 mit nachfolgender Stapeleinrichtung 23 zugeordnet. The kiln transport system 15 is associated with a roller conveyor 22 with subsequent stacking device 23.
Eine vierte Brammen- oder Bandtrenneinrichtung 24 ist in Bandlaufrichtung auslaufseitig der ersten Gerüstgruppe 12 der Walzstraße 3 vor dem Einlauf in die Heizeinrichtung 18 angeordnet. Diese vierte Brannnnen- oder Bandtrenneinrichtung 24 ist als Trommelschere ausgebildet. A fourth slab or strip separating device 24 is in the strip running direction on the outlet side of the first stand group 12 of the rolling mill 3 before entering the Heating device 18 is arranged. This fourth Brannnnen- or belt separating device 24 is designed as a drum shears.
Die Produktionsanlage dient dem Endlos-Walzen oder Batch-Walzen durch Gießen von flüssigem Metall, insbesondere von flüssigem Stahl, zu dem Gießstrang 1 a, der nach seinem Erstarren in der ersten Brammen- oder Bandtrenneinrichtung 10 in Gießstrang-Teillängen aufgeteilt und in den Rollenherdofen 2 befördert wird. Die jeweilige Gießstrang-Teillänge 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 weitergeführt. The production plant is used for endless rolling or batch rolling by casting of liquid metal, in particular of liquid steel, to the casting strand 1 a, which is divided after its solidification in the first slab or belt separator 10 in Gießstrang part lengths and in the roller hearth furnace second is transported. The respective Gießstrang part length is heated in the roller hearth furnace 2, uniformized in temperature and brought to rolling temperature for rolling in the rolling mill 3. During this time, continuous casting continues without interruption.
Falls es nun zu einem Störfall kommt, bei welchem es zu einem Stillstand des Brammen- oder Bandtransports kommt, stehen die erste bis vierte Brammen- oder Bandtrenneinrichtung 10, 14, 17, 24 zur Verfügung und ermöglichen in ihrem Zusammenwirken die Nutzung des Rollenherdofens 2 als Brammenpufferkapazität. Wenn im Störfall die als Teillänge von dem Gießstrang 1 a abgetrennte Dünnbramme zum Stillstand kommt, werden alle vier (erste bis vierte) Brammen- oder Bandtrenneinrichtungen 10, 14, 17 und 24 aktiviert und wird die Dünnbramme an vier, jeweils der Position einer Brammen- oder Bandtrenneinrichtung entsprechenden Positionen getrennt. Hierbei schneiden die erste und vierte, jeweils als Bandschere ausgebildete Brammen- oder Bandtrenneinrichtung 10, 24 jeweils ein Schrottstück, welches dann über die Schrottabfuhr entsorgt wird. Weiterhin entsteht an den Schnittstellen der jeweils als Brennschneidvorrichtung ausgebildeten zweiten und dritten Brammen- oder Bandtrenneinrichtung 14, 17 eine Lücke zwischen dem jeweiligen Kopf und Ende der Brammenstücke, so dass diese Brammenstücke eine Zeit lang im Rollenherdofen 2 oszillierend hin und her gefahren werden können. Kann die Störung nicht innerhalb einer Zeitspanne, welche als maximale Brammeneinliegezeit oder Brammenliegezeit im Ofen definiert ist oder wird, beseitigt werden, so dass es noch möglich wäre, die im Rollenherdofen 2 verweilenden Brammenstücke in der Walzstraße 3 zu walzen, dann werden diese Brammenstücke über die Ofenfähre 16 seitlich aus dem Rollenherdofen 2 ausgetragen und über den Rollengang 22 der nachfolgenden Stapeleinrichtung 23 zugeführt und auf diese Weise entsorgt. If it now comes to an accident in which there is a stoppage of slab or belt transport, are the first to fourth slab or belt separator 10, 14, 17, 24 are available and allow in their interaction the use of the roller hearth furnace 2 as slabs buffer capacity. If, in the event of a fault, the thin slab separated as a partial length from the cast strand 1a is stopped, all four (first to fourth) slab or strip separating devices 10, 14, 17 and 24 are activated and the thin slab is moved to four, in each case the position of a slab. or band separator corresponding positions separated. Here, the first and fourth, each designed as a band scissors slab or belt separating device 10, 24 each cut a piece of scrap, which is then disposed of via the scrap removal. Further formed at the interfaces of each formed as a flame cutting device second and third slab or belt separator 14, 17, a gap between the respective head and end of the slab pieces, so that these pieces of slab for a while in the roller hearth furnace 2 oscillating back and forth can be driven. Can not the disturbance within a period of time, which is or is defined as maximum slab deposit time or slab-laying time in the oven, be eliminated, so that it would still be possible in the roller hearth furnace 2 lingering slab pieces to roll in the rolling mill 3, then these slabs are discharged via the oven ferry 16 laterally from the roller hearth furnace 2 and fed via the roller conveyor 22 of the subsequent stacking device 23 and disposed of in this way.
Mithilfe der zweiten, als Brennschneidvorrichtung ausgebildeten Brammen- oder Bandtrenneinrichtung 14 wird in jedem Fall vermieden, dass ein Brammenstück größer einer einfachen Brammenlänge der Walzstraße 3 zugeführt werden muss. Es ist notwendig dies zu vermeiden, da die vor dem Haspel bzw. der Haspelanlage 21 angeordnete Hochgeschwindigkeitsschere (Trenneinrichtung 19) für den Endlosbetrieb mit Banddicken < 4,0 mm ausgelegt ist. Im Falle der Entsorgung einer überlangen Bramme aus dem Rollenherdofen 2 würde diese Schere zur Ablängung auf Coillänge aktiviert werden müssen. Die Begrenzung auf eine maximal Banddicke von 4,0 mm kann nach einem Störfall nicht garantiert werden. With the aid of the second slab or belt separating device 14 designed as a flame cutting device, it is avoided in any case that a slab piece greater than a simple slab length must be fed to the rolling train 3. It is necessary to avoid this since the high-speed scissors (separating device 19) arranged in front of the reel or the coiler 21 are designed for continuous operation with strip thicknesses <4.0 mm. In the case of disposal of an overlong slab from the roller hearth furnace 2, these scissors would have to be activated to cut to coil length. The limitation to a maximum strip thickness of 4.0 mm can not be guaranteed after an accident.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Dünnbramnnengießanlage 1 thin-burn caster
1 a Gießstrang  1 a cast strand
2 Rollenherdofen  2 roller hearth furnace
3 Walzstraße  3 rolling mill
10 Brammen- oder Bandtrenneinrichtung 10 slab or belt separator
12 erste Gerüstgruppe 12 first scaffolding group
13 zweite Gerüstgruppe  13 second framework group
14 Brammen- oder Bandtrenneinrichtung 14 slab or belt separator
15 Ofenfährensystem 15 oven ferry system
16 Ofenfähre  16 kiln ferry
17 Brammen- oder Bandtrenneinrichtung 17 slab or belt separator
18 Heizeinrichtung 18 heating device
21 Haspelanlage  21 coiler
22 Rollengang  22 roller conveyor
23 Stapeleinrichtung  23 stacking device
24 Brammen- oder Bandtrenneinrichtung  24 slab or belt separator

Claims

Patentansprüche claims
1 . Produktionsanlage, die in Reihe eine einem Rollenherdofen (2) vorgeschaltete Dünnbrammenstranggießanlage (1 ), den den Gießstrang (1 a) oder mindestens eine davon abgetrennte Teillänge des Gießstrangs (1 a) aufnehmenden Rollenherdofen (2) und eine den in dem Rollenherdofen (2) erwärmten oder warmgehaltenen Gießstrang (1 a) oder die mindestens eine davon abgetrennte Teillänge auswalzende, dem Rollenherdofen (2) nachgeschaltete Walzstraße (3) mit zugeordneter Haspelanlage (21 ) umfasst, wobei die Stranggießanlage (1 ) und die Walzstraße (3) in einem Endlos-Betriebsmodus betreibbar sind, und wobei der Auslaufseite des Rollenherdofens (2) ein seitlich zum Rollenherdofen (2) angeordnetes Ofenfährensystem (15) zugeordnet und die Walzstraße (3) eine erste Gerüstgruppe (12) und eine dazu beabstandete zweite Gerüstgruppe (13) mit einer zwischen erster und zweiter Gerüstgruppe (12, 13) angeordneten Heizeinrichtung (18), insbesondere Induktionsheizung, aufweist und wobei weiterhin in Brammeneinlaufrichtung einlaufseitig vor dem Rollenherdofen (2) eine erste Brammen- oder Bandtrenneinrichtung (10), insbesondere eine Bandschere, vorzugsweise eine Pendelschere, angeordnet und in Brammenauslaufrichtung auslaufseitig nach dem Rollenherdofen (2) und vor der ersten Gerüstgruppe (12) der Walzstraße (3) eine zweite Brammen- oder Bandtrenneinrichtung (14) angeordnet ist, wobei die zweite Brammen- oder Bandtrenneinrichtung (14) als Brennschneidvorrichtung ausgebildet ist und wobei im auslaufseitigen Bereich des Rollenherdofens (2) vor einem, vorzugsweise zumindest in etwa, der Längserstreckung einer Ofenfähre (16) des Ofenfährensystems (15) entsprechenden Längenabschnitt des Rollenherdofens (2) eine als Brennschneidvorrichtung ausgebildete dritte Brammen- oder Bandtrenneinrichtung (17) angeordnet und dass in Bandlaufrichtung auslaufseitig der ersten Gerüstgruppe (12) der Walzstraße (3) vor dem Einlauf in die Heizeinrichtung (18) eine vierte Brammen- oder Bandtrenneinrichtung (24), insbesondere eine Bandschere, vorzugsweise eine Trommelschere, angeordnet ist. 1 . Production plant, which in series to a roller hearth furnace (2) upstream Dünnbrammenstranggießanlage (1), the cast strand (1 a) or at least one of them separated part length of the casting strand (1 a) receiving roller hearth furnace (2) and in the roller hearth furnace (2) heated or held cast strand (1 a) or at least one of them separated part ausalzende, the roller hearth furnace (2) downstream rolling mill (3) with associated coiler (21), the continuous casting (1) and the rolling train (3) in an endless Operational mode are operable, and wherein the outlet side of the roller hearth furnace (2) an laterally to the roller hearth furnace (2) arranged Ofenfährensystem (15) assigned and the rolling train (3) a first scaffolding group (12) and a spaced second scaffolding group (13) with a between the first and second scaffolding group (12, 13) arranged heating device (18), in particular induction heating, and wherein further in slab inlet direction upstream of the roller hearth furnace (2) a first slab or belt separating device (10), in particular a belt scissors, preferably a pendulum scissor arranged and in slab outlet direction outlet side after the roller hearth furnace (2) and in front of the first scaffolding group (12) of the rolling train (3 ), a second slab or belt separating device (14) is arranged, wherein the second slab or belt separating device (14) is designed as a flame cutting device and wherein in the outlet side region of the roller hearth furnace (2) before one, preferably at least approximately, the longitudinal extent of a furnace ferry ( 16) of the Ofenfährensystems (15) corresponding longitudinal section of the roller hearth furnace (2) arranged as a flame cutting device third slab or belt separating device (17) and that in the belt running direction outlet side of the first scaffolding group (12) of the rolling mill (3) before entering the heater ( 18) a fourth slab or Belt separating device (24), in particular a belt shears, preferably a drum shears, is arranged.
Produktionsanlage nach Anspruch 1 , dadurch gekennzeichnet, dass dem Ofenfährensystem (15) ein Rollengang (22) mit nachfolgender Stapeleinrichtung (23) zugeordnet ist. Production plant according to claim 1, characterized in that the oven ferry system (15) is associated with a roller conveyor (22) with a subsequent stacking device (23).
Verfahren zum Betrieb der Produktionsanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass bei Stillstand des Brammen- oder Bandtransportes während eines Störfalls in der Produktionsanlage alle der ersten bis vierten Brammen- oder Bandtrenneinrichtungen (10, 14, 17, 24) aktiviert und die Dünnbramme oder die mindestens eine davon abgetrennte Teillänge und das Band an den Positionen der ersten bis vierten Brammenoder Bandtrenneinrichtung (10, 14, 17, 24) getrennt werden. Method for operating the production plant according to claim 1 or 2, characterized in that at standstill of the slab or belt transport during an accident in the production all of the first to fourth slab or belt separating devices (10, 14, 17, 24) activated and the thin slab or the at least one part length separated therefrom and the strip are separated at the positions of the first to fourth slab or strip separating means (10, 14, 17, 24).
Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass mit der ersten und vierten Brammen- oder Bandtrenneinrichtung (10, 24) Schrottstücke geschnitten und diese aus der Produktionslinie der Produktionsanlage entfernt werden. A method according to claim 3, characterized in that cut with the first and fourth slab or belt separating device (10, 24) scrap pieces and these are removed from the production line of the production plant.
Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass mittels der zweiten und dritten Brammen- oder Bandtrenneinrichtung (14, 17) Stücke einer solchen Länge aus der Dünnbramme oder der mindestens einen davon abgetrennten Teillänge oder dem Band herausgeschnitten werden, dass die jeweils verbleibenden Teillängen der Dünnbramme während der Dauer des Störfalls im Rollenherdofen (2) oszillierend hin und her gefahren werden können. A method according to claim 3 or 4, characterized in that by means of the second and third slab or belt separating means (14, 17) pieces of such a length from the thin slab or the at least one separated part length or the band are cut out, that the remaining partial lengths the thin slab during the period of the accident in the roller hearth furnace (2) oscillating back and forth can be driven.
Verfahren nach einem oder mehreren der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass bei Überschreiten einer maximal zulässigen Brammeneinliegezeit die geschnittenen Teillängen mittels des Ofenfährensystems (15) seitlich aus dem Rollenherdofen (2) ausgetragen und über den zugeordneten Rollengang (22) der nachfolgenden Stapeleinrichtung (23) zugeführt werden. Method according to one or more of claims 3 to 5, characterized in that when exceeding a maximum allowable slab deposit time, the cut partial lengths by means of Ofenfährensystems (15) discharged laterally from the roller hearth furnace (2) and fed via the associated roller conveyor (22) of the subsequent stacking device (23).
EP17755503.4A 2016-09-05 2017-08-22 Continuously operable production plant and method for operating the production plant when there is a fault Active EP3507030B1 (en)

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WO2018041661A1 (en) 2018-03-08
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EP3507030B1 (en) 2020-05-20
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