EP1641573A2 - Device for producing a hot-rolled thermal strip, especially made of strip-type continuous casting material - Google Patents

Device for producing a hot-rolled thermal strip, especially made of strip-type continuous casting material

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Publication number
EP1641573A2
EP1641573A2 EP04739967A EP04739967A EP1641573A2 EP 1641573 A2 EP1641573 A2 EP 1641573A2 EP 04739967 A EP04739967 A EP 04739967A EP 04739967 A EP04739967 A EP 04739967A EP 1641573 A2 EP1641573 A2 EP 1641573A2
Authority
EP
European Patent Office
Prior art keywords
furnace
casting
line
rolling
strip
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
EP04739967A
Other languages
German (de)
French (fr)
Other versions
EP1641573B1 (en
Inventor
Günter KNEPPE
Hans Streubel
Volker Braas
Christoph Klein
Jürgen Müller
Karl Rittner
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 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
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Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1641573A2 publication Critical patent/EP1641573A2/en
Application granted granted Critical
Publication of EP1641573B1 publication Critical patent/EP1641573B1/en
Anticipated expiration legal-status Critical
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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
    • 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
    • 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
    • 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
    • B21B1/22—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
    • B21B2001/225—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 by hot-rolling
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5184—Casting and working

Definitions

  • the invention relates to a device for producing hot-rolled steel strip comprising at least one continuous casting machine, at least one pair of scissors, at least one compensating furnace, a descaler, optionally a roughing mill, a finishing train (multi-stand rolling mill or Steckel rolling mill (s)), a roller table with a cooling zone and at least one Rewinder for hot strip.
  • the casting machine, the shears, the heating furnace / equalization furnace, the multi-stand rolling mill, the outfeed roller table with the cooling zone and the reel are arranged in a line.
  • the casting machines and the heating furnaces are located next to one another in parallel.
  • the slabs are brought into the rolling line via so-called transport ferries.
  • transport ferries Such a system concept requires system lengths between 300 m and 500 m.
  • Document DE 42 36 307 A1 discloses a method and a device for producing hot-rolled steel strip from continuously cast primary material, preferably thin slabs, the primary material cast in the casting machine being solidified into lengths by means of scissors that correspond to the desired coil weight.
  • the thin slabs are homogenized in a leveling furnace, then pre-rolled in a roughing mill, finish-rolled in a finishing train and cooled in a cooling zone and wound onto a reel.
  • the thin slabs are heated to temperatures above 1150 ° C after the homogenization and before the first roughing pass. Then the thin slab is pre-rolled with subsequent recrystallization and Cooling the pre-rolled strip to the rolling temperature for the finishing train and the subsequent finishing rolling.
  • the plant for the production of hot strip shows, among other things, two continuous casting machines arranged in parallel with two scissors and with two equalizing furnaces.
  • the equalizing furnaces are followed by a transport ferry for the thin slabs, which has a ferry car.
  • the thin slabs can be transported alternately from the compensating furnaces to the other rolling line by means of the ferry car.
  • a storage for the cast thin slabs is provided behind the transport ferry, which can be heated or also unheated and which is arranged in line with the rolling train.
  • Document DE 40 41 206 A1 describes a method and a plant for the production of hot-rolled steel strip, in particular for stainless steel from continuously cast starting material.
  • the primary material cast in the casting machine is subdivided into lengths into thin slabs, which are homogenized in a compensating furnace and heated to the rolling temperature, then introduced into a rolling mill and then rolled in a series of pass passes to predefinable final dimensions.
  • a thin slab is transferred to a ferry and laterally shifted from its starting position into the line with the continuous casting machine into a parallel line of a rolling mill, whereby at the same time or before a section of a roller table corresponding to the ferry also crossways from the line of the rolling mill is brought out.
  • the thin slab is accelerated out of the ferry to the rolling speed, introduced into the rolling mill and pre-rolled through it into a coil that can be wound, and immediately after it leaves the last stand, it is inserted into a Steckel furnace and rewound to prevent loss of temperature ,
  • the section of the roller table as well as the ferry at the same time or beforehand are moved back to their starting positions, the rolling mill is switched to reversing operation and the strip is finished in reverse operation by handling the reel of the plug-in furnace in reversing operation by handling the reel of the plug-in furnace and then from the last stand over the roller table pulled out and reeled into the coil in a terminal reel station.
  • Document WO 92/00 815 relates to a plant for producing hot strip which has been rolled out from previously cast thin slabs.
  • the system consists of a casting machine with pan and tundish for the molten steel, as well as a mold into which the cast steel flows from the tundish and the thin slab emerges at the lower end of the mold.
  • an induction furnace is arranged as a temperature compensation and heating furnace, and behind the induction furnace is a reel furnace for the reduced thickness of the sliver.
  • Behind the reel furnace is a multi-stand rolling mill, a roller table with a cooling zone, a finishing mill and a reel for the hot rolled strip.
  • the invention proposes to arrange the casting line and the rolling line parallel or approximately parallel next to one another in such a way that the casting direction and the rolling direction are aligned essentially in opposite directions to one another.
  • connection between the casting line and the rolling line is created by a heating furnace, which brings the slabs from the casting line into the rolling line in the manner of a ferry, and at the same time increases the temperature of the slabs to the required piercing temperature.
  • the distance between the casting line and the rolling line is designed in such a way that a sufficient dwell and buffer time in the heating furnace is ensured.
  • the preheating furnace is designed so that there is space for at least three slabs and a maximum of twelve slabs in the compensating furnace.
  • the heating furnace can be any suitable type of furnace, for example roller hearth furnace, step-lift furnace, reel furnace, walking beam furnace or a combination of such suitable furnace types.
  • the casting line consists of one or more casting machines or of several casting strands which are expediently located at a height or that the casting and rolling planes can also be offset in height.
  • At least one continuous furnace is arranged between the casting machine and the heating furnace. Furthermore, it is considered appropriate that at least one continuous furnace is arranged between the rolling mill and the heating furnace.
  • the casting line and the rolling line can be arranged at an angle> 0 ° to approximately 150 ° to one another if space or space requirements make this necessary.
  • FIG. 1 shows in the block diagram the opposing arrangement of the casting line and the rolling line and a compensating furnace connecting them.
  • FIG. 2 shows in the block diagram the opposing arrangement of the casting line and the rolling line according to FIG. 1, additionally with a tunnel furnace arranged downstream of the casting machine.
  • FIG. 1 in block diagram, the system of Figure 1, but with tunnel ovens, which are each assigned to the casting machine and the rolling mill.
  • Figure 3 is a block diagram of the opposing arrangement of the casting line and rolling line, which are connected to each other via swivel ferries.
  • Figure 4 shows the opposite arrangement of the casting line and rolling line, which are at an angle ⁇ to each other.
  • FIG. 1 shows the compact system according to the invention, in which the casting line GL and the rolling line WL are arranged parallel to one another and the casting direction and the rolling direction are in opposite directions.
  • the connection between the casting line and the rolling line is created by an AO heating furnace, which brings the slabs from the casting line into the rolling line in the manner of a ferry and at the same time increases the temperature of the slabs to the required tapping temperature for the WL rolling mill. At least three and a maximum of 12 slabs can be accommodated in the AO heating furnace.
  • the distance between the casting line with the GM casting machine and the rolling line with the WM rolling mill is designed in such a way that a sufficient dwell and buffer time in the heating furnace is ensured.
  • the casting line GL consists of several units or machines and generally comprises a ladle and a tundish for holding the molten metal to be cast, and also a mold into which the molten metal from the tundish is introduced by means of a pouring tube and into the mold is poured into a thin slab, which is then cooled in a curved support frame and cut to the so-called coil weight using a scissor device.
  • a ladle and a tundish for holding the molten metal to be cast
  • a mold into which the molten metal from the tundish is introduced by means of a pouring tube and into the mold is poured into a thin slab, which is then cooled in a curved support frame and cut to the so-called coil weight using a scissor device.
  • any suitable type of furnace can be used for the heating furnace, for example roller hearth furnace, step lift furnace, coiler furnace, walking beam furnace or a combination of these furnace types.
  • the rolling line WL consists of a descaler, if necessary a roughing stand, a multi-stand rolling mill, if necessary at least one Steckel rolling mill, a roller table arranged behind it with a cooling device for the rolled hot strip and at least one subsequent coiler device. device for reeling the finished rolled strip onto the so-called coil weight.
  • FIG. 2 and Figure 2a show the compact system according to the invention with casting line GL and rolling line WL, the casting direction of the casting machine GM and the rolling direction in the rolling mill WW run in opposite directions. Behind the casting machine and in front of the AO heating furnace there is an additional tunnel furnace TO as a continuous furnace.
  • FIG. 2a shows that in addition to the compact system according to FIG. 2, a tunnel furnace is also arranged as a continuous furnace behind the heating furnace and in front of the rolling mill.
  • FIG. 3 shows the basic concept according to the invention of the opposite direction of the casting line GL and the rolling line WL, a tunnel furnace TO being arranged behind the casting machine GM and a tunnel furnace TO being arranged in front of the rolling mill WW, and both tunnel furnaces being connected to one another by means of a swivel ferry SF.
  • Figure 4 shows an alternative of the compact system according to the invention with largely opposing casting line and rolling line, with which it is possible to take into account different space and space conditions in such a way that, for example, casting line and rolling line are not aligned parallel to each other, but at a certain angle ⁇ to one another stand, which can span the angle range> 0 ° and ⁇ 150 °.
  • This measure can preferably be used to arrange a compact system in an L shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Continuous Casting (AREA)
  • Basic Packing Technique (AREA)

Abstract

An installation for producing hot-rolled steel strip, including a continuous casting machine, a shear, a soaking furnace, a descaler, possibly a roughing train, a finishing train including a multi-stand rolling mill or Steckel mill, a roller table with a cooling zone, and a coiling reel for the hot strip. The casting line and the pass line are arranged parallel or approximately parallel to each other so that the casting direction and the rolling direction are oriented opposite each other and are connected with each other by a reheating furnace. The reheating furnace is a rocker-bar hearth furnace or a walking-beam furnace. The distance between the casting line and the pass line is designed so that a sufficient residence and buffering time for the thin slabs in the reheating furnace is guaranteed. The reheating furnace is designed to hold from three to twelve slabs.

Description

Vorrichtung zur Herstellung von warmgewalztem Warmband, insbesondere aus bandförmig stranggegossenem VormaterialDevice for producing hot-rolled hot strip, in particular from strip-shaped continuous material
Die Erfindung betrifft eine Vorrichtung zur Herstellung von warmgewalztem Stahlband umfassend mindestens eine Stranggießmaschine, mindestens eine Schere, mindestens einen Ausgleichsofen, einen Entzunderer, ggf. eine Vorstraße, eine Fertigstraße (mehrgerüstiges Walzwerk oder Steckelwalzwerk (e) ), einen Rollgang mit Kühlzone und mindestens einen Aufwickelhaspel für das Warmband.The invention relates to a device for producing hot-rolled steel strip comprising at least one continuous casting machine, at least one pair of scissors, at least one compensating furnace, a descaler, optionally a roughing mill, a finishing train (multi-stand rolling mill or Steckel rolling mill (s)), a roller table with a cooling zone and at least one Rewinder for hot strip.
Bei heutigen Dünn- und Mediumbrammenanlagen sind die Gießmaschine, die Schere, der Aufwärmofen, /-Ausgleichsofen, das mehrgerüstige Walzwerk, der Auslaufrollgang mit Kühlzone und Aufwickelhaspel in Linie angeordnet. Bei Mehrstranganlagen liegen die Gießmaschinen und die Aufwärmöfen parallel nebeneinander. Über sogenannte Transportfähren werden die Brammen in die Walzlinie verbracht. Ein solches Anlagekonzept erfordert Anlagenlängen zwischen 300 m und 500 m.In today's thin and medium slab systems, the casting machine, the shears, the heating furnace / equalization furnace, the multi-stand rolling mill, the outfeed roller table with the cooling zone and the reel are arranged in a line. In the case of multi-strand systems, the casting machines and the heating furnaces are located next to one another in parallel. The slabs are brought into the rolling line via so-called transport ferries. Such a system concept requires system lengths between 300 m and 500 m.
Aus dem Dokument DE 42 36 307 A1 ist ein Verfahren und eine Vorrichtung zur Herstellung von warmgewalztem Stahlband aus stranggegossenem Vormaterial, vorzugsweise Dünnbrammen bekannt, wobei das in der Gießmaschine gegossenen Vormaterial nach Erstarren in Längen mittels Scheren unterteilt wird, die dem gewünschten Bundgewicht entsprechen. Die Dünnbrammen werden in einem Ausgleichsofen homogenisiert, anschließend in einer Vorwalzstraße vorgewalzt, in einer Fertigstraße fertiggewalzt und in einer Kühlzone abgekühlt und auf einen Haspel aufgewickelt. Im Hinblick auf verschiedene Stahlqualitäten werden die Dünnbrammen im Anschluss an das Homogenisieren und vor dem ersten Vorwalzstich auf Temperaturen über 1150 ° C aufgeheizt. Dann erfolgt ein Vorwalzen der Dünnbramme mit anschließendem Rekristallisieren und Kühlen des vorgewalzten Bandes auf Walztemperatur für die Fertigstraße und das anschließende Fertigwalzen. Die Anlage zur Herstellung von Warmband zeigt unter anderem zwei parallel angeordnete Stranggießmaschinen mit zwei Scheren sowie mit zwei Ausgleichsöfen. Den Ausgleichsöfen schließt sich eine Transportfähre für die Dünnbrammen an, die einen Fährwagen aufweist. Mittels des Fährwagens können die Dünnbrammen alternierend von den Ausgleichsöfen in die jeweils andere Walzlinie transportiert werden. Um einen konstanten Gieß- und Walzvorgang zu gewährleisten, ist hinter der Transportfähre ein Speicher für die gegossenen Dünnbrammen vorgesehen, der beheizt oder auch unbeheizt sein kann und der in Linie mit der Walzstraße angeordnet ist.Document DE 42 36 307 A1 discloses a method and a device for producing hot-rolled steel strip from continuously cast primary material, preferably thin slabs, the primary material cast in the casting machine being solidified into lengths by means of scissors that correspond to the desired coil weight. The thin slabs are homogenized in a leveling furnace, then pre-rolled in a roughing mill, finish-rolled in a finishing train and cooled in a cooling zone and wound onto a reel. With regard to different steel grades, the thin slabs are heated to temperatures above 1150 ° C after the homogenization and before the first roughing pass. Then the thin slab is pre-rolled with subsequent recrystallization and Cooling the pre-rolled strip to the rolling temperature for the finishing train and the subsequent finishing rolling. The plant for the production of hot strip shows, among other things, two continuous casting machines arranged in parallel with two scissors and with two equalizing furnaces. The equalizing furnaces are followed by a transport ferry for the thin slabs, which has a ferry car. The thin slabs can be transported alternately from the compensating furnaces to the other rolling line by means of the ferry car. In order to ensure a constant casting and rolling process, a storage for the cast thin slabs is provided behind the transport ferry, which can be heated or also unheated and which is arranged in line with the rolling train.
Das Dokument DE 40 41 206 A1 beschreibt ein Verfahren und eine Anlage zur Herstellung von warmgewalztem Stahlband, insbesondere für Edelstahle aus stranggegossenen Vormaterial. Das in der Gießmaschine gegossene Vormaterial wird nach dem Erstarren in Längen zu Dünnbrammen unterteilt, die in ei- nem Ausgleichsofen homogenisiert und auf Walztemperatur erwärmt werden, anschließend in ein Walzwerk eingeführt und in einer Folge von Walzstichen zu vorgebbaren Endabmessungen fertiggewalzt werden. Vom Ausgleichsofen wird eine Dünnbramme in eine Fähre überführt und mit dieser aus ihrer Ausgangsposition in die Linie mit der Stranggießmaschine seitlich in eine dazu parallele Linie einer Walzstraße versetzt, wobei zugleich oder zuvor ein der Fähre entsprechendes Teilstück eines Rollgangs aus der Linie der Walzstraße ebenfalls quer ab herausgefahren wird. So dann wird die Dünnbramme aus der Fähre heraus auf Walzgeschwindigkeit beschleunigt, in die Walzstraße eingeführt und im Vorlauf durch diese zu einem wickelfähigen Coil vorgewalzt und dieses un- mittelbar nach dem Auslauf aus dem letzten Gerüst in eine Steckelofen eingeführt und darin zur Vermeidung von Temperaturverlust aufgehaspelt. Das Teilstück des Rollgangs sowie zugleich oder zuvor die Fähre werden in ihre Ausgangspositionen zurückgefahren, das Walzwerk wird auf Reversierbetrieb umgestellt und das Band wird unter Abwicklung vom Haspel des Steckelofens im Reversierbetrieb unter Abwicklung vom Haspel des Steckelofens im Reversierbetrieb fertiggewalzt und aus dem so dann letzten Gerüst über den Rollgang herausgefahren und in einer endständigen Haspelstation zum Coil aufgehaspelt.Document DE 40 41 206 A1 describes a method and a plant for the production of hot-rolled steel strip, in particular for stainless steel from continuously cast starting material. After solidification, the primary material cast in the casting machine is subdivided into lengths into thin slabs, which are homogenized in a compensating furnace and heated to the rolling temperature, then introduced into a rolling mill and then rolled in a series of pass passes to predefinable final dimensions. From the leveling furnace, a thin slab is transferred to a ferry and laterally shifted from its starting position into the line with the continuous casting machine into a parallel line of a rolling mill, whereby at the same time or before a section of a roller table corresponding to the ferry also crossways from the line of the rolling mill is brought out. Then the thin slab is accelerated out of the ferry to the rolling speed, introduced into the rolling mill and pre-rolled through it into a coil that can be wound, and immediately after it leaves the last stand, it is inserted into a Steckel furnace and rewound to prevent loss of temperature , The section of the roller table as well as the ferry at the same time or beforehand are moved back to their starting positions, the rolling mill is switched to reversing operation and the strip is finished in reverse operation by handling the reel of the plug-in furnace in reversing operation by handling the reel of the plug-in furnace and then from the last stand over the roller table pulled out and reeled into the coil in a terminal reel station.
Das Dokument WO 92/00 815 betrifft eine Anlage zur Herstellung von Warmband, welches aus zuvor gegossenen Dünnbrammen ausgewalzt worden ist. Die Anlage besteht aus einer Gießmaschine mit Pfanne und Tundish für den geschmolzenen Stahl sowie aus einer Kokille, in welche der gegossenen Stahl aus dem Tundish einfließt und die Dünnbramme am unteren Ende der Kokille austritt. Hinter der Gießmaschine befindet sich ein Vorwalzwerk und hinter dem Vorwalzwerk eine Scherenvorrichtung, in der das gegossene Band auf Bram- menlänge abgelenkt wird. Im Anschluss daran ist ein Induktionsofen als Temperaturausgleichs- und Aufwärmofen angeordnet sowie hinter dem Induktionsofen ein Haspelofen für das in der Dicke reduzierte Vorband. Hinter dem Haspelofen befindet sich ein mehrgerüstiges Walzwerk, ein Rollgang mit Kühlzone, ein Fertigwalzwerk sowie ein Haspel für das fertig gewalzte Warmband.Document WO 92/00 815 relates to a plant for producing hot strip which has been rolled out from previously cast thin slabs. The system consists of a casting machine with pan and tundish for the molten steel, as well as a mold into which the cast steel flows from the tundish and the thin slab emerges at the lower end of the mold. There is a roughing mill behind the casting machine and behind the roughing mill a scissors device in which the cast strip is deflected to the slab length. Following this, an induction furnace is arranged as a temperature compensation and heating furnace, and behind the induction furnace is a reel furnace for the reduced thickness of the sliver. Behind the reel furnace is a multi-stand rolling mill, a roller table with a cooling zone, a finishing mill and a reel for the hot rolled strip.
Dem oben genannten dokumentarischen Stand der Technik ist gemeinsam, dass sämtliche Anlagenaggregate bzw. Maschinen in Linie angeordnet sind, wodurch diese Anlagenkonzepte zur erheblichen Anlagenlängen führen, unabhängig davon, ob diese Anlagen in Linie nebeneinander angeordnet sind und mit Fähren miteinander verbunden sind.The above-mentioned documentary state of the art has in common that all plant units or machines are arranged in a line, whereby these plant concepts lead to considerable plant lengths, regardless of whether these plants are arranged in a line next to one another and are connected to each other by ferries.
Auf dem Hintergrund des zuvor erörterten Standes der Technik ist es die Aufgabe der Erfindung, ein neues Anlagenkonzept zu schaffen, bei dem der Platzbedarf und insbesondere die Anlagenlänge deutlich geringer ist.Against the background of the prior art discussed above, it is the object of the invention to create a new system concept in which the space requirement and in particular the system length is significantly less.
Zur Lösung der oben genannten Aufgabe wird mit der Erfindung vorgeschlagen, die Gießlinie und die Walzlinie parallel oder annähernd parallel nebeneinander in der Weise anzuordnen, dass Gießrichtung und Walzrichtung im Wesentlichen gegenläufig zueinander ausgerichtet sind. Durch diese Maßnahme wird in über- raschend einfacher Art die bisher bekannte Länge von Dünnbrammenanlagen ganz erheblich reduziert und erstmalig eine Kompaktanlage zum Herstellen von Dünnband bereit gestellt.To achieve the above object, the invention proposes to arrange the casting line and the rolling line parallel or approximately parallel next to one another in such a way that the casting direction and the rolling direction are aligned essentially in opposite directions to one another. This measure makes the previously known length of thin slab plants surprisingly simple considerably reduced and for the first time a compact system for the production of thin strips is available.
In Ausgestaltung der Erfindung wird die Verbindung zwischen Gießlinie und Walzlinie durch einen Aufwärmofen geschaffen, der im Sinne einer Fähre die Brammen von der Gießlinie in die Walzlinie bringt, und gleichzeitig die Temperatur der Brammen auf die geforderte Anstichtemperatur erhöht.In an embodiment of the invention, the connection between the casting line and the rolling line is created by a heating furnace, which brings the slabs from the casting line into the rolling line in the manner of a ferry, and at the same time increases the temperature of the slabs to the required piercing temperature.
In Fortsetzung des Erfindungsgedankens wird vorgeschlagen, dass der Abstand zwischen der Gießlinie und der Walzlinie so ausgelegt ist, dass eine aus- reichende Verweil- und Pufferzeit im Aufwärmofen gewährleistet ist. Der Vorwärmofen wird nach einem weitergehenden Vorschlag so ausgelegt, dass mindestens drei Brammen und maximal zwölf Brammen im Ausgleichsofen Platz finden.In continuation of the inventive concept, it is proposed that the distance between the casting line and the rolling line is designed in such a way that a sufficient dwell and buffer time in the heating furnace is ensured. According to a further proposal, the preheating furnace is designed so that there is space for at least three slabs and a maximum of twelve slabs in the compensating furnace.
Der Aufwärmofen kann dabei jeder geeignete Ofentyp sein, beispielsweise Rollenherdofen, Stufenhubherdofen, Haspelofen, Hubbalkenofen oder eine Kombination solcher geeigneten Ofentypen.The heating furnace can be any suitable type of furnace, for example roller hearth furnace, step-lift furnace, reel furnace, walking beam furnace or a combination of such suitable furnace types.
In einer weiterbildenden Ausgestaltung der Erfindung ist vorgesehen, dass die Gießlinie aus einer oder mehreren Gießmaschinen oder aus mehreren Gießsträngen besteht, die zweckmäßigerweise lagemäßig in einer Höhe liegen oder aber auch Gieß- und Walzebene in der Höhe zueinander versetzt sein können.In a further development of the invention, it is provided that the casting line consists of one or more casting machines or of several casting strands which are expediently located at a height or that the casting and rolling planes can also be offset in height.
Erfindungsgemäß wird ferner vorgeschlagen, dass zwischen der Gießmaschine und dem Aufwärmofen mindestens ein Durchlaufofen angeordnet ist. Ferner wird es als zweckmäßig angesehen, dass zwischen Walzwerk und Aufwärmofen mindestens ein Durchlaufofen angeordnet ist.According to the invention it is further proposed that at least one continuous furnace is arranged between the casting machine and the heating furnace. Furthermore, it is considered appropriate that at least one continuous furnace is arranged between the rolling mill and the heating furnace.
Alternativ wird gemäß der Erfindung vorgeschlagen, dass die Gießlinie und die Walzlinie in einem Winkel > 0° bis ca. 150° zueinander angeordnet sein können, falls Raum bzw. Platzerfordernisse dies notwendig machen. Mit Hilfe einer sol- chen Maßnahme ist es auch möglich, nach Raum- und Platzbedarf Gießlinie und Walzlinie rechtwinklig zueinander anzuordnen und diese mit dem Ausgleichsofen zu verbinden.Alternatively, it is proposed according to the invention that the casting line and the rolling line can be arranged at an angle> 0 ° to approximately 150 ° to one another if space or space requirements make this necessary. With the help of a Chen measure, it is also possible to arrange the casting line and rolling line at right angles to one another according to space and space requirements and to connect them to the compensating furnace.
Andere Winkelanordnungen zwischen Gießlinie und Walzlinie können mittels einer diese beiden Linien verbindenden Schwenkfähre hergestellt werden.Other angular arrangements between the casting line and the rolling line can be produced by means of a swivel ferry connecting these two lines.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass bei der Gießlinie die Gießmaschine mit nachgeschaltetem Durchlaufofen und bei der Walzlinie das Walzwerk mit vorgeschaltetem Durchlaufofen über eine Parallel- oder Schwenkfähre miteinander in Verbindung stehen.In a further embodiment of the invention it is provided that in the casting line the casting machine with a downstream continuous furnace and in the rolling line the rolling mill with an upstream continuous furnace are connected to one another via a parallel or swivel ferry.
Die Erfindung wird anhand von Ausführungsbeispielen schematisierend näher beschrieben.The invention is described in more detail schematically using exemplary embodiments.
Es zeigen: Figur 1 im Blockschaltbild die gegenläufige Anordnung von Gießlinie und Walzlinie und einen diese verbindenden Ausgleichsofen.FIG. 1 shows in the block diagram the opposing arrangement of the casting line and the rolling line and a compensating furnace connecting them.
Figur 2 im Blockschaltbild die gegenläufige Anordnung von Gießlinie und Walzlinie gemäß Figur 1 , zusätzlich mit einem der Gießmaschine nachgeordneten Tunnelofen.FIG. 2 shows in the block diagram the opposing arrangement of the casting line and the rolling line according to FIG. 1, additionally with a tunnel furnace arranged downstream of the casting machine.
Figur 2a im Blockschaltbild die Anlage gemäß Figur 1 , jedoch mit Tunnelöfen, die jeweils der Gießmaschine und dem Walzwerk zugeordnet sind.Figure 2a in block diagram, the system of Figure 1, but with tunnel ovens, which are each assigned to the casting machine and the rolling mill.
Figur 3 im Blockschaltbild die gegenläufige Anordnung von Gießlinie und Walzlinie, die über Schwenkfähren miteinander verbunden sind. Figur 4 die gegenläufige Anordnung von Gießlinie und Walzlinie, die in einem Winkel α zueinander stehen.Figure 3 is a block diagram of the opposing arrangement of the casting line and rolling line, which are connected to each other via swivel ferries. Figure 4 shows the opposite arrangement of the casting line and rolling line, which are at an angle α to each other.
Figur 1 zeigt die erfindungsgemäße Kompaktanlage, bei der Gießlinie GL und Walzlinie WL parallel zueinander angeordnet sind und Gießrichtung und Walz- richtung gegenläufig sind. Die Verbindung zwischen Gießlinie und Walzlinie wird durch einen Aufwärmofen AO geschaffen, der im Sinne einer Fähre die Brammen von der Gießlinie in die Walzlinie bringt und gleichzeitig die Temperatur der Brammen auf die geforderte Anstichtemperatur für Walzwerk WL erhöht. In dem Aufwärmofen AO finden mindestens drei und maximal 12 Bram- men Aufnahme. Der Abstand zwischen der Gießlinie mit der Gießmaschine GM und der Walzlinie mit dem Walzwerk WM ist jeweils so ausgelegt, dass eine ausreichende Verweil- und Pufferzeit in dem Aufwärmofen gewährleistet ist.FIG. 1 shows the compact system according to the invention, in which the casting line GL and the rolling line WL are arranged parallel to one another and the casting direction and the rolling direction are in opposite directions. The connection between the casting line and the rolling line is created by an AO heating furnace, which brings the slabs from the casting line into the rolling line in the manner of a ferry and at the same time increases the temperature of the slabs to the required tapping temperature for the WL rolling mill. At least three and a maximum of 12 slabs can be accommodated in the AO heating furnace. The distance between the casting line with the GM casting machine and the rolling line with the WM rolling mill is designed in such a way that a sufficient dwell and buffer time in the heating furnace is ensured.
Die Gießlinie GL besteht bekanntermaßen aus mehreren Aggregaten bzw. Ma- schinen und umfasst in der Regel eine Gießpfanne und einen Tundish zur Aufnahme des zu vergießenden geschmolzenen Metalls sowie aus einer Kokille, in die das schmelzflüssige Metall aus dem Tundish mittels eines Gießrohres eingeleitet wird und in der Kokille zu einer dünnen Bramme gegossen wird, die anschließend in einem gebogenen Stützgerüst gekühlt und auf das sogenann- ten Bundgewicht mittels einer Scherenvorrichtung abgelängt wird. Diese Anlagenteile sind der Einfachheit halber nicht dargestellt.As is known, the casting line GL consists of several units or machines and generally comprises a ladle and a tundish for holding the molten metal to be cast, and also a mold into which the molten metal from the tundish is introduced by means of a pouring tube and into the mold is poured into a thin slab, which is then cooled in a curved support frame and cut to the so-called coil weight using a scissor device. These parts of the system are not shown for the sake of simplicity.
Für den Aufwärmofen kann jeder geeignete Ofentyp eingesetzt werden, beispielsweise Rollenherdofen, Stufenhubherdofen, Haspelofen, Hubbalkenofen oder eine Kombination dieser Ofentypen.Any suitable type of furnace can be used for the heating furnace, for example roller hearth furnace, step lift furnace, coiler furnace, walking beam furnace or a combination of these furnace types.
Die Walzlinie WL besteht bekanntermaßen aus einem Entzunderer, ggf. einem Vorgerüst, einem mehrgerüstigen Walzwerk, ggf. mindestens einem Steckelwalzwerk, einem dahinter angeordneten Rollgang mit Kühleinrichtung für das gewalzte Warmband sowie mindestens einer anschließenden Haspeleinrich- tung zum Aufhaspeln des fertig gewalzten Bandes auf das sogenannte Bundgewicht. Diese Anlagenteile sind ebenfalls nicht dargestellt.As is known, the rolling line WL consists of a descaler, if necessary a roughing stand, a multi-stand rolling mill, if necessary at least one Steckel rolling mill, a roller table arranged behind it with a cooling device for the rolled hot strip and at least one subsequent coiler device. device for reeling the finished rolled strip onto the so-called coil weight. These parts of the system are also not shown.
Figur 2 und Figur 2a zeigen die erfindungsgemäße Kompaktanlage mit Gießlinie GL und Walzlinie WL, wobei die Gießrichtung der Gießmaschine GM und die Walzrichtung im Walzwerk WW gegenläufig verlaufen. Hinter der Gießmaschine und vor dem Aufwärmofen AO ist zusätzlich ein Tunnelofen TO als Durchlaufofen angeordnet. Figur 2a zeigt, dass zusätzlich zu der Kompaktanlage gemäß Figur 2 hinter dem Aufwärmofen und vor dem Walzwerk ebenfalls ein Tunnelofen als Durchlaufofen angeordnet ist.Figure 2 and Figure 2a show the compact system according to the invention with casting line GL and rolling line WL, the casting direction of the casting machine GM and the rolling direction in the rolling mill WW run in opposite directions. Behind the casting machine and in front of the AO heating furnace there is an additional tunnel furnace TO as a continuous furnace. FIG. 2a shows that in addition to the compact system according to FIG. 2, a tunnel furnace is also arranged as a continuous furnace behind the heating furnace and in front of the rolling mill.
Figur 3 zeigt das erfindungsgemäße Grundkonzept der Gegenläufigkeit von Gießlinie GL und Walzlinie WL, wobei hinter der Gießmaschine GM ein Tunnelofen TO und vor dem Walzwerk WW ein Tunnelofen TO angeordnet ist und beide Tunnelöfen mittels einer Schwenkfähre SF miteinander in Verbindung stehen.FIG. 3 shows the basic concept according to the invention of the opposite direction of the casting line GL and the rolling line WL, a tunnel furnace TO being arranged behind the casting machine GM and a tunnel furnace TO being arranged in front of the rolling mill WW, and both tunnel furnaces being connected to one another by means of a swivel ferry SF.
Figur 4 zeigt eine Alternative der erfindungsgemäßen Kompaktanlage mit weitgehend gegenläufiger Gießlinie und Walzlinie, mit der es möglich ist, unterschiedliche Platz- und Raumverhältnisse in der Weise zu berücksichtigen, dass beispielsweise Gießlinie und Walzlinie nicht parallel zueinander ausgerichtet sind, sondern in einem bestimmten Winkel α zueinander stehen, der den Winkelbereich > 0° und < 150° umfassen kann. Bevorzugt kann mit dieser Maßnahme eine Kompaktanlage in L-Form angeordnet werden. Figure 4 shows an alternative of the compact system according to the invention with largely opposing casting line and rolling line, with which it is possible to take into account different space and space conditions in such a way that, for example, casting line and rolling line are not aligned parallel to each other, but at a certain angle α to one another stand, which can span the angle range> 0 ° and <150 °. This measure can preferably be used to arrange a compact system in an L shape.

Claims

Patentansprüche claims
1. Vorrichtung zur Herstellung von warmgewalztem Stahlband umfassend mindestens eine Stranggießmaschine, mindestens eine Schere, mindestens einen Ausgleichsofen, einen Entzunderer, ggf. eine Vorstraße, eine Fertigstraße (mehrgerüstiges Walzwerk oder Steckelwalzerk (e) ), einen Rollgang mit Kühlzone und mindestens einen Aufwickelhaspel für das Warmband, dadurch gekennzeichnet, dass die Gießlinie und die Walzlinie parallel oder annähernd parallel zueinander in der Weise angeordnet sind, dass Gießrichtung und Walzrichtung im wesentlichen gegenläufig zueinander ausgerichtet sind.1.Device for the production of hot-rolled steel strip comprising at least one continuous casting machine, at least one pair of scissors, at least one compensating furnace, a descaling machine, possibly a roughing mill, a finishing train (multi-stand rolling mill or Steckel rolling mill (s)), a roller table with a cooling zone and at least one take-up reel for the hot strip, characterized in that the casting line and the rolling line are arranged parallel or approximately parallel to one another in such a way that the casting direction and the rolling direction are aligned essentially in opposite directions to one another.
Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass Gießlinie und Walzlinie durch einen Aufwärmofen miteinander verbunden sind.Apparatus according to claim 1, characterized in that the casting line and the rolling line are connected to one another by a heating furnace.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abstand zwischen der Gießlinie und der Walzlinie so ausgelegt ist, dass eine ausreichende Verweil- und Pufferzeit für die Dünnbrammen im Aufwärmofen gewährleistet ist.3. Apparatus according to claim 1 or 2, characterized in that the distance between the casting line and the rolling line is designed so that a sufficient dwell and buffer time for the thin slabs is ensured in the heating furnace.
4. Vorrichtung nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass der Aufwärmofen zur Aufnahme von mindestens drei Brammen und maximal zwölf Brammen ausgelegt ist. 4. The device according to claim 1, 2 or 3, characterized in that the heating furnace is designed to hold at least three slabs and a maximum of twelve slabs.
5. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Aufwärmofen ein Stufenhubherdofen ist.5. The device according to one or more of claims 1 to 4, characterized in that the heating furnace is a step-hearth furnace.
6. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Aufwärmofen ein Rollenherdofen, Haspelofen, Hubbalkenofen oder eine Kombination dieser geeignete Ofentypen oder dergleichen Öfen ist.6. Device according to one or more of the preceding claims, characterized in that the heating furnace is a roller hearth furnace, reel furnace, walking beam furnace or a combination of these suitable furnace types or similar furnaces.
7. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gießlinie aus einer oder mehreren Gießmaschinen oder mehreren Gießsträngen besteht.7. The device according to one or more of the preceding claims, characterized in that the casting line consists of one or more casting machines or several casting strands.
8. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gieß- und Walzebene vorzugsweise in einer Höhe liegen.8. The device according to one or more of the preceding claims, characterized in that the casting and rolling plane are preferably at a height.
9. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gieß- und Walzebene in der Höhe zueinander versetzt sind.9. The device according to one or more of the preceding claims, characterized in that the pouring and rolling plane are offset in height from one another.
10. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen der Gießmaschine und dem Aufwärmofen mindestens ein Durchlaufofen angeordnet ist.10. The device according to one or more of the preceding claims, characterized in that at least one continuous furnace is arranged between the casting machine and the heating furnace.
11. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Walzwerk und dem Aufwärmofen mindestens ein Durchlaufofen angeordnet ist. 11. The device according to one or more of the preceding claims, characterized in that at least one continuous furnace is arranged between the rolling mill and the heating furnace.
12. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gießmaschine mit nachgeschaltetem Durchlaufofen und das Walzwerk mit vorgeschaltetem Durchlaufofen über eine Parallel- oder Schwenkfähre verbindbar sind.12. The device according to one or more of the preceding claims, characterized in that the casting machine with a downstream continuous furnace and the rolling mill with an upstream continuous furnace can be connected via a parallel or swivel ferry.
13. Vorrichtung zur Herstellung von warmgewalztem Stahlband mit mindestens einer Stranggießmaschine, mindestens einer Schere, mindestens einem Ausgleichsofen, ggf. einer Vorstraße, einer Fertigstraße, einem Rollgang mit einer Kühlzone und mit einem Aufwickelhaspel insbesondere nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, dass die Gießlinie und die Walzlinie vorzugsweise in einem Winkel > 0° bis ca.150° zueinander angeordnet sind.13. Device for the production of hot-rolled steel strip with at least one continuous casting machine, at least one pair of scissors, at least one compensating furnace, possibly a roughing train, a finishing train, a roller table with a cooling zone and with a take-up reel, in particular according to one of claims 6 to 12, characterized in that that the casting line and the rolling line are preferably arranged at an angle> 0 ° to about 150 ° to one another.
14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass Gießlinie und Walzlinie mittels einer Schwenkfähre miteinander in Verbindung stehen. 14. The apparatus according to claim 13, characterized in that the casting line and the rolling line are connected to each other by means of a swivel ferry.
EP04739967A 2003-07-03 2004-06-17 Device for producing a hot-rolled thermal strip, especially made of strip-type continuous casting material Revoked EP1641573B1 (en)

Applications Claiming Priority (2)

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DE10330210A DE10330210A1 (en) 2003-07-03 2003-07-03 Apparatus for producing hot-rolled hot strip, in particular from strip-shaped continuously cast semi-finished material
PCT/EP2004/006505 WO2005002749A2 (en) 2003-07-03 2004-06-17 Device for producing a hot-rolled thermal strip, especially made of strip-type continuous casting material

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EP1641573B1 EP1641573B1 (en) 2008-10-22

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RU2533290C2 (en) * 2013-02-25 2014-11-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" (национальный исследовательский университет) (ФГБОУ ВПО "ЮУрГУ" (НИУ)) Production of hot-rolled strips and cast house
CN104131708A (en) * 2014-07-06 2014-11-05 曾润洪 Method for manufacturing and distributing reinforced concrete members which are made of reinforced concrete and used for bridge, culvert and channel
CN104307871B (en) * 2014-10-20 2016-06-08 中色科技股份有限公司 A kind of several casting ingot heating stoves are parallel to the explained hereafter method in hot rolling direction simultaneously
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DE10330210A1 (en) 2005-01-20
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EP1641573B1 (en) 2008-10-22
UA88616C2 (en) 2009-11-10
EG23997A (en) 2008-03-16
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KR20060030100A (en) 2006-04-07
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CA2531151A1 (en) 2005-01-13
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TW200512050A (en) 2005-04-01
RU2006103072A (en) 2006-06-27
MXPA06000152A (en) 2006-04-07
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US20120144638A1 (en) 2012-06-14
CN101001706A (en) 2007-07-18
WO2005002749A3 (en) 2005-03-31

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