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EP1107834A1 - Method and device for producing hot-rolled wide strip, notably from thin slabs - Google Patents

Method and device for producing hot-rolled wide strip, notably from thin slabs

Info

Publication number
EP1107834A1
EP1107834A1 EP99942900A EP99942900A EP1107834A1 EP 1107834 A1 EP1107834 A1 EP 1107834A1 EP 99942900 A EP99942900 A EP 99942900A EP 99942900 A EP99942900 A EP 99942900A EP 1107834 A1 EP1107834 A1 EP 1107834A1
Authority
EP
European Patent Office
Prior art keywords
furnace
casting
furnaces
compensating
casting machine
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.)
Withdrawn
Application number
EP99942900A
Other languages
German (de)
French (fr)
Inventor
Adolf Zajber
Karl Rittner
Joachim Hafer
Wolfgang Hennig
Werner Mertens
Friedhelm Kalteich
Max Münker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP1107834A1 publication Critical patent/EP1107834A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling

Definitions

  • the invention relates to a method for producing hot wide strip, in particular from continuously cast thin slabs, in successive working steps of a rolling line having a continuous finishing train, casting strands being produced in a casting machine or casting line, possibly separated into individual thin slabs and homogenized in each case in a compensating furnace and brought to temperature and transferred from the compensating furnace, possibly with the interposition of a storage furnace and, in some cases, an extended holding furnace, to the production line with at least one working scaffold.
  • the invention also relates to a plant for carrying out the method according to the invention.
  • continuously cast thin slabs are used as starting material for the finishing train consisting of several stands, which for example have a thickness of less than 100 to 70 mm, preferably of about 50 mm.
  • the thin slabs are regularly cut from an endless cast strand produced in a continuous casting machine, with a length that corresponds to the required coil weight for the finished hot wide strip.
  • the casting speed of continuous casting machines for thin slab continuous casting is relatively low, while the drawing-in speed of an associated continuously working hot strip mill with several stands is about a factor of 2 to 4 higher. It is therefore advantageous to assign two casting machines to a continuous finishing train in such a way that thin slabs are alternately separated from each of the two endless casting strands and then each fed to the finishing train for rolling.
  • DE 4234455 A1 discloses a method for rolling out hot wide strip from continuously cast thin slabs in successive steps of a rolling line having a continuous finishing train.
  • the thin slabs are produced in two casting machines or two casting lines by separating them from the cast strand.
  • the thin slabs are each homogenized in a compensation furnace and brought to temperature and introduced into a storage buffer of the compensation furnace and transferred from there to the rolling line.
  • a thin slab is swiveled out of the casting line or moved laterally using a movable furnace part and, after a first reversal of direction, is conveyed in the opposite direction to the casting strand and introduced into a storage furnace within the rolling line.
  • the thin slab is conveyed from this storage furnace after a second reversal of direction into a holding furnace downstream of the storage furnace in the direction against the rolling line and introduced from the holding furnace into the finishing train and rolled out in the finishing train to the end product.
  • the sophisticated logistics are designed in such a way that all system components can be operated using their maximum performance (production capacity).
  • Fig. 1 is a three-strand system with a reverse swivel ferry
  • Fig. 2 shows a casting machine with three parallel furnace systems with backward swivel ferries.
  • Fig. 3 shows a three-strand casting machine with three parallel furnace systems
  • FIG. 4 shows a casting machine with three parallel furnace systems with a forward swivel ferry
  • FIG. 1 shows a first concept variant, which is equipped as a three-strand system 1 with reverse swivel ferries 4.
  • the middle casting line From the middle casting line, the thin slab 6 is fed to the scissors 12, descaling device 8, and a 6-stand finishing mill 9. Behind the last finishing stand, the water cooling section 10 is arranged, in which the hot strip is cooled down.
  • FIG. 2 shows a second concept variant which has a single casting machine 2 '.
  • the middle furnace system is in a production line with the rolling mill 9.
  • the scissors 12 and the descaling device 8 are arranged behind the middle furnace system. This is followed by a 6-stand mill 9.
  • the finished rolled hot strip is transferred from the last stand of the rolling mill to the cooling section 10, in which the strip is cooled down to the further processing temperature.
  • Behind the water cooling section 10 is the reel assembly 11 with two reels with which the strip is wound into transportable coils.
  • the rolling mill 9 consists of a pair of scissors 7, a descaling device 8, a 6-stand rolling mill 9 with the downstream water cooling section 10 and the two coiler systems 11 with which the finished rolled strip is wound into coils becomes.
  • FIG. 4 shows the fourth concept variant with a casting machine 2 'and three furnace systems 3 "' arranged downstream of the casting machine 2 ', which are arranged in parallel.
  • a pair of scissors 7 is arranged between the casting machine 2' and the furnace systems 3" ".
  • the two outer furnace systems work by means of forward swiveling ferries 5 'on the middle furnace system, which - as said before - is in line with the production system, which consists of scissors 12, the descaling device 8, a 6-stand rolling mill 9 and the like downstream water cooling section 10, which is followed by the coiler 11, in which the finished strip is wound into coils.
  • the overall system according to the invention for the production of hot strip from cast thin slabs, it is possible to establish both logistics for the individual components of the overall system and a logistical connection between the system components so that the steelworks or the blast furnace into the production line for casting the thin slabs and in the Production line of the rolling mill is integrated in order to significantly increase the production performance of conventional thin slab plants.
  • the present invention it is possible for the first time to use the previously known electric melting furnaces and to connect a blast furnace system with the thin slab system to form a powerful unit. It is now also possible for the first time to cast and roll out other types of steel with the thin slab lines that could not be taken into account due to the use of the electric melting furnace.

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

Abstract

The invention relates to a method and an installation for producing hot-rolled wide strip, notably from continuously cast thin slabs in consecutive operating steps of a pass line presenting a continuous finishing train. According to said method cast strands are produced in a casting machine or casting line, possibly divided into individual thin slabs, each homogenized in a soaking furnace and brought to a uniform temperature, after which they are transferred from the soaking furnace possibly to a storage furnace, if required to an elongated holding furnace and from there to the finishing train having at least one finishing stand. The invention is characterized in that the steel works or the blast furnace, casting machine, soaking furnace and hot-rolling mill, as well as other separate components, are logistically interconnected in such a way that the maximum production capacity of the individual components or installation components is utilized.

Description

Verfahren und Anlage zur Hersteilung von Warmbreitband aus insbesondere dünnen BrammenProcess and plant for the production of hot wide strip from in particular thin slabs
Die Erfindung betrifft ein Verfahren zum Herstellen von Warmbreitband insbesondere aus stranggegossenen Dünnbrammen in aufeinanderfolgenden Arbeitsschritten einer eine kontinuierliche Fertigstraße aufweisenden Walzlinie, wobei in einer Gießmaschine bzw. Gießlinie Gußstränge erzeugt, ggf. zu einzelnen Dünnbrammen abgetrennt und in jeweils einem Ausgleichsofen homogenisiert und auf Temperatur gebracht werden und aus dem Ausgleichsofen ggf. unter Zwischenschaltung eines Speicherofens und fallweise eines verlängerten Halteofens in die Fertigungsstraße mit mindestens einem Arbeitsgerüst überführt werden. Die Erfindung betrifft auch eine Anlage zur Durchführung des erfindungsgemäßen Verfahrens.The invention relates to a method for producing hot wide strip, in particular from continuously cast thin slabs, in successive working steps of a rolling line having a continuous finishing train, casting strands being produced in a casting machine or casting line, possibly separated into individual thin slabs and homogenized in each case in a compensating furnace and brought to temperature and transferred from the compensating furnace, possibly with the interposition of a storage furnace and, in some cases, an extended holding furnace, to the production line with at least one working scaffold. The invention also relates to a plant for carrying out the method according to the invention.
In modernen Produktionsanlagen zur Herstellung von warmgewalzten Bändern oder Profilen werden als Vormaterial für die aus mehreren Gerüsten bestehende Fertigstraße stranggegossene Dünnbrammen eingesetzt, die beispielsweise eine Dicke von weniger als 100 bis 70 mm, vorzugsweise von etwa 50 mm haben. Die Dünnbrammen werden von einem in einer Stranggießmaschine erzeugten endlosen Gußstrang regelmäßig abgetrennt, und zwar mit einer Länge, die dem gefordertem Coil-Gewicht für das fertige Warmbreitband entspricht. Die Gießgeschwindigkeit von Stranggießmaschinen für Dünnbrammen-Strangguß ist relativ gering, während die Einzugsgeschwindigkeit einer zugeordneten kontinuierlich arbeiteten Warmbreitband-Fertigstraße mit mehreren Gerüsten etwa um den Faktor 2 bis 4 höher liegt. Deshalb ist es vorteilhaft, einer kontinuierlichen Fertigstraße zwei Gießmaschinen zuzuordnen, derart, daß Dünnbrammen abwechselnd von jedem der beiden endlosen Gußstränge abgetrennt und anschließend jeweils der Fertigstraße zum Auswalzen zugeführt werden.In modern production plants for the production of hot-rolled strips or profiles, continuously cast thin slabs are used as starting material for the finishing train consisting of several stands, which for example have a thickness of less than 100 to 70 mm, preferably of about 50 mm. The thin slabs are regularly cut from an endless cast strand produced in a continuous casting machine, with a length that corresponds to the required coil weight for the finished hot wide strip. The casting speed of continuous casting machines for thin slab continuous casting is relatively low, while the drawing-in speed of an associated continuously working hot strip mill with several stands is about a factor of 2 to 4 higher. It is therefore advantageous to assign two casting machines to a continuous finishing train in such a way that thin slabs are alternately separated from each of the two endless casting strands and then each fed to the finishing train for rolling.
Aus einigen Produktionsanlagen für Warmbreitband ist es bekannt, bspw. mit Hilfe zweier Längs/Quer/ Längs-Transportsysteme, sog. Fähren, die Dünn- brammen aus der jeweiligen Gießlinie heraus in die Fluchtlinie der Warmbreitbandstraße zu bringen, damit sie dann in diese eingezogen werden können. Bei einer bekannten Ausführung derartiger Anlagen weist diese zwei Einstrang- Gießmaschinen mit je einem Ausgleichsofen und je einer Fähre auf, sowie für beide gemeinsam einen Halteofen vor der Walzstraße. In jedem Ausgleichsofen ist aufeinanderfolgend eine Heizzone, ein Systempuffer und ein Speicherofenteil angeordnet. In der Heizzone werden die Dünnbrammen auf Walztemperatur aufgeheizt. Der anschließende Systempuffer ist erforderlich, um die bei wechselweisen Quertransport der Dünnbrammen aus beiden Gießmaschinen in die Walzstraße erforderliche Transportzeit zu überbrücken. Der Speicherofen schafft die Möglichkeit, begrenzte Stillstandszeiten der Walzstraße, hervorgerufen durch bspw. Walzenwechsel, bei fortlaufender Gußstrangproduktion zu überbrücken.It is known from some production facilities for hot wide strip, for example with the aid of two longitudinal / transverse / longitudinal transport systems, so-called ferries, which bring slabs out of the respective casting line into the escape line of the hot wide strip mill so that they can then be drawn into it. In a known version of such systems, this has two single-strand casting machines, each with a compensating furnace and a ferry, and for both together a holding furnace in front of the rolling mill. A heating zone, a system buffer and a storage furnace part are arranged in succession in each compensation furnace. In the heating zone, the thin slabs are heated to the rolling temperature. The subsequent system buffer is required in order to bridge the transport time required for alternating transverse transport of the thin slabs from both casting machines into the rolling mill. The storage furnace creates the possibility of bridging limited downtimes of the rolling mill, caused by, for example, roll changes, with continuous cast strand production.
Aus der DE 4234455 A1 ist ein Verfahren zum Auswalzen von Warmbreitband aus strangegossenen Dünnbrammen in aufeinanderfolgenden Arbeitsschritten einer eine kontinuierliche Fertigstraße aufweisenden Walzlinie bekannt. Die Dünnbrammen werden in zwei Gießmaschinen bzw. zwei Gießlinien erzeugt, indem diese von dem Gußstrang abgetrennt werden. Die Dünnbrammen werden in jeweils einem Ausgleichsofen homogenisiert und auf Temperatur gebracht und in einen Speicherpuffer des Ausgleichsofen eingeführt und aus diesem in die Walzlinie überführt. In einem ersten Arbeitsschritt wird eine Dünnbramme unter Verwendung eines beweglichen Ofenteils aus der Gießlinie herausgeschwenkt bzw. seitlich versetzt und nach einer ersten Richtungsumkehr in Gegenrichtung zum Gußstrang gefördert und in einen Speicherofen innerhalb der Walzlinie eingeführt. In einem zweiten Arbeitsschritt wird die Dünnbramme aus diesem Speicherofen nach einer zweiten Richtungsumkehr in eine dem Speicherofen nachgeordneten Halteofen in Richtung gegen die Walzlinie gefördert und aus dem Halteofen in die Fertigstraße eingeführt und in der Fertigstraße zum Endprodukt ausgewalzt. Mit dieser Maßnahme konnte eine Verkürzung der Gesamtanlage insb. der Ofenanlage erreicht werden gegenüber einem Walzverfahren bzw. einer Walzanlage, die in einem Geradeauslauf arbeitet, ohne daß hierdurch verfahrenstechnische Nachteile oder anlagentechnische Schwierigkeiten entstehen. Auch konnte der Durchsatz der Produktionsanlage erheblich gesteigert werden.DE 4234455 A1 discloses a method for rolling out hot wide strip from continuously cast thin slabs in successive steps of a rolling line having a continuous finishing train. The thin slabs are produced in two casting machines or two casting lines by separating them from the cast strand. The thin slabs are each homogenized in a compensation furnace and brought to temperature and introduced into a storage buffer of the compensation furnace and transferred from there to the rolling line. In a first step, a thin slab is swiveled out of the casting line or moved laterally using a movable furnace part and, after a first reversal of direction, is conveyed in the opposite direction to the casting strand and introduced into a storage furnace within the rolling line. In a second step, the thin slab is conveyed from this storage furnace after a second reversal of direction into a holding furnace downstream of the storage furnace in the direction against the rolling line and introduced from the holding furnace into the finishing train and rolled out in the finishing train to the end product. This measure made it possible to shorten the overall system, in particular the furnace system, compared to a rolling process or a rolling system that works in a straight line, without this resulting in procedural disadvantages or technical difficulties. The throughput of the production plant was also increased considerably.
Ausgehend von dem zuletzt genannten Stand der Technik ist es Aufgabe der vorliegenden Erfindung, sowohl eine verbesserte Logistik der Einzelkomponenten der gesamten Produktionsanlage bereit zu stellen, als auch eine logistische Verbindung zwischen den Anlagekomponenten Stahlwerk-Gießmaschine- Ausgleichsofen-Warmwalzwerk herzu- stellen.Starting from the last-mentioned prior art, it is the object of the present invention to provide both improved logistics of the individual components of the entire production system and to establish a logistical connection between the system components of the steelworks casting machine, compensating furnace hot rolling mill.
Die Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.The object is achieved with the features of patent claim 1.
Die anspruchsgemäße Logistik ist dahingehend ausgelegt, daß alle Anlagekomponenten unter Ausnutzung ihrer maximalen Leistungsfähigkeit (Produktionskapazität) betrieben werden können.The sophisticated logistics are designed in such a way that all system components can be operated using their maximum performance (production capacity).
Die Logistik der Gesamtanlage läßt sich in den KonzeptvariantenThe logistics of the entire system can be found in the concept variants
3-Stranggießmaschine mit drei parallelen Ofenanlagen und Rückwärts-3-strand casting machine with three parallel furnace systems and reverse
Schwenkfähren, eine Gießmaschine mit einer 3-Strangofenanlage mit Rückwärts-Swivel ferries, a casting machine with a 3-strand furnace system with reverse
Schwenkfähren,Swivel ferries,
3-Stranggießmaschine mit drei parallelen Ofenanlagen und mit Vorwärts-3-strand casting machine with three parallel furnace systems and with forward
Schwenkfähren, eine Gießmaschine mit einer 3-Strangofenanlage mit Vorwärts-Swivel ferries, a casting machine with a 3-strand furnace system with forward
Schwenkfähren,Swivel ferries,
realisieren und erlaubt damit eine Produktionssteigerung, die bisher von den Zweistranganlagen nicht erreicht werden konnte.Realize and thus allow an increase in production that previously could not be achieved by the two-line systems.
Die Erfindung wird anhand eines Ausführungsbeispiels beschrieben, dem weitere Einzelheiten und Merkmale der Erfindung zu entnehmen sind. Es zeigen: Fig. 1 eine Dreistranganlage mit Rückwärts-SchwenkfähreThe invention is described using an exemplary embodiment, from which further details and features of the invention can be found. Show it: Fig. 1 is a three-strand system with a reverse swivel ferry
Fig. 2 eine Gießmaschine mit drei parallelen Ofenanlagen mit Rück wärts-Schwenkfähren Fig. 3 eine Dreistranggießmaschine mit drei parallelen Ofenanlagen mitFig. 2 shows a casting machine with three parallel furnace systems with backward swivel ferries. Fig. 3 shows a three-strand casting machine with three parallel furnace systems
Vorwärts-Schwenkfähren Fig. 4 eine Gießmaschine mit drei parallelen Ofenanlagen mit einer Vor- wärts-SchwenkfähreForward swivel ferries Fig. 4 shows a casting machine with three parallel furnace systems with a forward swivel ferry
Fig. 1 zeigt eine 1. Konzeptvariante, die als Dreistranganlage 1 mit Rückwärts- Schwenkfähren 4 ausgestattet ist. Es sind drei Gießmaschinen 2 parallel zueinander angeordnet, jeweils gefolgt von einer Schere 7 und einer Ofenanlage sowie zwei rückwärts arbeitenden Schwenkfähren 4 , die auf die mittlere Gießlinie arbeiten, die sich in einer Produktionslinie mit dem nachgeschalteten Walzwerk 9 befindet. Aus der mittleren Gießlinie wird die Dünnbramme 6 der Schere 12, Entzunderungsvorrichtung 8, einer 6-gerüstigen Fertigwalzstaffel 9 zugeführt. Hinter dem letzten Fertiggerüst ist die Wasserkühlstrecke 10 angeordnet, in der das Warmband heruntergekühlt wird.1 shows a first concept variant, which is equipped as a three-strand system 1 with reverse swivel ferries 4. There are three casting machines 2 arranged parallel to each other, each followed by a pair of scissors 7 and a furnace system and two backward-working swivel ferries 4, which work on the middle casting line, which is located in a production line with the downstream rolling mill 9. From the middle casting line, the thin slab 6 is fed to the scissors 12, descaling device 8, and a 6-stand finishing mill 9. Behind the last finishing stand, the water cooling section 10 is arranged, in which the hot strip is cooled down.
Hinter der Wasserkühlstrecke 10 befinden sich zwei Wickelvorrichtungen 11 , mit denen das fertiggewalzte Warmband zu transportablen Bunden gewickelt wird.Behind the water cooling section 10 there are two winding devices 11 with which the hot rolled strip is wound into transportable coils.
Die Fig. 2 zeigt eine zweite Konzeptvariante, die eine einzige Gießmaschine 2' aufweist. Hinter der Gießmaschine befinden sich drei Ofenanlagen 3', wobei die Öfen zueinander parallel angeordnet sind und zwischen der Gießmaschine 2' und der Ofenanlage 3' jeweils eine Schere 7 angeordnet ist. Die äußeren Ofenanlagen 3' sind mit Rückwärts-Schwenkfähren 4 ausgestattet, die auf die mittlere Ofenanlage arbeiten. Die mittlere Ofenanlage befindet sich in einer Produktionslinie mit dem Walzwerk 9. Hinter der mittleren Ofenanlage ist die Schere 12 und die Entzunderungsvorrichtung 8 angeordnet. Dann folgt eine 6-gerüstige Walzstraße 9. Aus dem letzten Gerüst der Walzstraße wird das fertiggewalzte Warmband in die Kühlstrecke 10 überführt, in der das Band auf Weiterverarbeitungstemperatur heruntergekühlt wird. Hinter der Wasserkühlstrecke 10 befindet sich die Haspelaniage 11 mit zwei Haspeln, mit denen das Band zu transportablen Bunden gewickelt wird.2 shows a second concept variant which has a single casting machine 2 '. There are three furnace systems 3 'behind the casting machine, the furnaces being arranged parallel to one another and a pair of scissors 7 being arranged between the casting machine 2' and the furnace system 3 '. The outer furnace systems 3 'are equipped with reverse swivel ferries 4, which work on the middle furnace system. The middle furnace system is in a production line with the rolling mill 9. The scissors 12 and the descaling device 8 are arranged behind the middle furnace system. This is followed by a 6-stand mill 9. The finished rolled hot strip is transferred from the last stand of the rolling mill to the cooling section 10, in which the strip is cooled down to the further processing temperature. Behind the water cooling section 10 is the reel assembly 11 with two reels with which the strip is wound into transportable coils.
Die Fig. 3 zeigt eine dritte Konzeptvariante bestehend aus einer 3- Stranggießanlage mit jeweils einer Gießmaschine 2, einer Schere 7 und einem Ausgleichsofen 3". Die Gießlinien sind parallel zueinander angeordnet. Die Ausgleichsöfen 3" sind mit Vorwärts-Schwenkfähren 5 verbunden. Die äußeren Ausgleichsöfen arbeiten auf den mittleren Ausgleichsofen, der in Produktionslinie mit dem Walzwerk 9 angeordnet ist. Das Walzwerk 9 besteht wie bei den Konzeptvarianten nach Fig. 1 und Fig. 2 aus einer Schere 7, einer Entzunderungsvorrichtung 8, einem 6-gerüstigen Walzwerk 9 mit der nachgeordneten Wasserkühlstrecke 10 und den zwei Haspelanlagen 11 , mit denen das fertiggewalzte Band zu Bunden gewickelt wird.3 shows a third concept variant consisting of a 3-strand caster, each with a casting machine 2, a pair of scissors 7 and a compensating furnace 3 ". The casting lines are arranged parallel to one another. The compensating furnaces 3" are connected to forward swivel ferries 5. The outer equalizing furnaces work on the middle equalizing furnace, which is arranged in the production line with the rolling mill 9. As in the concept variants according to FIGS. 1 and 2, the rolling mill 9 consists of a pair of scissors 7, a descaling device 8, a 6-stand rolling mill 9 with the downstream water cooling section 10 and the two coiler systems 11 with which the finished rolled strip is wound into coils becomes.
Fig. 4 zeigt die vierte Konzeptvariante mit einer Gießmaschine 2' und drei der Gießmaschine 2' nachgeordneten Ofenanlagen 3"',die parallel angeordnet sind. Zwischen der Gießmaschine 2' und den Ofenanlagen 3'" ist jeweils eine Schere 7 angeordnet. Die beiden äußeren Ofenanlagen arbeiten mittels Vorwärts- Schwenkfähren 5' auf die mittleren Ofenanlage, die sich - wie zuvor gesagt - in Linie zu der Produktionsanlage befindet, die aus einer Schere 12, aus der Entzunderungsvorrichtung 8, aus einem 6-gerüstigem Walzwerk 9 und der nachgeordneten Wasserkühlstrecke 10 besteht, der die Haspelanlage 11 folgt, in der das Fertigband zu Bunden aufgewickelt wird.4 shows the fourth concept variant with a casting machine 2 'and three furnace systems 3 "' arranged downstream of the casting machine 2 ', which are arranged in parallel. A pair of scissors 7 is arranged between the casting machine 2' and the furnace systems 3" ". The two outer furnace systems work by means of forward swiveling ferries 5 'on the middle furnace system, which - as said before - is in line with the production system, which consists of scissors 12, the descaling device 8, a 6-stand rolling mill 9 and the like downstream water cooling section 10, which is followed by the coiler 11, in which the finished strip is wound into coils.
Mit der erfindungsgemäßen Gesamtanlage zur Herstellung von Warmband aus gegossenen Dünnbrammen ist es möglich, sowohl eine Logistik für die Einzelkomponenten der Gesamtanlage als auch eine logistische Verbindung zwischen den Anlagekomponenten so herzustellen, daß das Stahlwerk bzw. der Hochofen in die Produktionslinie zum Gießen der Dünnbrammen und in die Produktionslinie des Walzwerkes eingebunden wird, um auf diese Weise die Produktionsleistung herkömmlicher Dünnbrammenanlagen erheblich zu steigern. Mit der vorliegenden Erfindung ist es erstmals möglich, mit dem Einsatz der bisher bekannten Elektroschmelzöfen abzugehen und eine Hochofenanlage mit der Dünnbrammenanlage zu einer leistungsfähigen Einheit zu verbinden. Damit ist es auch erstmals möglich, andere Stahlsorten mit der Dünnbrammenanlagen zu vergießen und auszuwalzen, die wegen des Einsatzes der Elektroschmelzöfen bislang nicht berücksichtigt werden konnten. With the overall system according to the invention for the production of hot strip from cast thin slabs, it is possible to establish both logistics for the individual components of the overall system and a logistical connection between the system components so that the steelworks or the blast furnace into the production line for casting the thin slabs and in the Production line of the rolling mill is integrated in order to significantly increase the production performance of conventional thin slab plants. With the present invention, it is possible for the first time to use the previously known electric melting furnaces and to connect a blast furnace system with the thin slab system to form a powerful unit. It is now also possible for the first time to cast and roll out other types of steel with the thin slab lines that could not be taken into account due to the use of the electric melting furnace.

Claims

Patentansprüche claims
1. Verfahren zum Herstellen von Warmbreitband insbesondere aus stran- gegossenen Dünnbrammen in aufeinanderfolgenden Arbeitsschritten einer eine kontinuierliche Fertigstraße aufweisenden Walzlinie, wobei in einer Gießmaschine bzw. Gießlinie Gußstränge erzeugt, ggf. zu einzelnen Dünnbrammen abgetrennt und in jeweils einem Ausgleichsofen homogenisiert und auf Temperatur gebracht werden und aus dem Ausgleichsofen ggf. unter Zwischenschaltung eines Speicherofens und fallweise einen verlängerten Halteofen in die Fertigstraße mit mindestens einem Fertiggerüst überführt werden, dadurch gekennzeichnet, daß Stahlwerk bzw. Hochofen, Gießmaschine, Ausgleichsofen und Warmwalzwerk sowie andere Einzelkomponenten in der Weise logistisch miteinander verbunden werden, daß die maximale Leistungsfähigkeit der Einzelkomponenten bzw. Anlagekomponenten ausgenutzt wird.1. A method for producing hot wide strip, in particular from continuously cast thin slabs, in successive working steps of a rolling line having a continuous finishing train, casting strands being produced in a casting machine or casting line, possibly being separated into individual thin slabs and being homogenized in each case in a compensating furnace and brought to temperature and from the compensating furnace, possibly with the interposition of a storage furnace and occasionally an extended holding furnace, being transferred to the finishing train with at least one finishing stand, characterized in that the steelworks or blast furnace, casting machine, compensating furnace and hot rolling mill and other individual components are logistically connected to one another in this way, that the maximum performance of the individual components or system components is used.
2. Anlage zur Durchführung des Verfahrens des Anspruchs 1 , dadurch gekennze ichnet, daß diese mindestens aus drei parallelen Gießsträngen mit Ausgleichsöfen besteht, wobei die Ausgleichsöfen über Rückwärts-Schwenkfähren miteinander verbunden sind.2. Installation for carrying out the method of claim 1, characterized in that it consists of at least three parallel cast strands with compensating furnaces, the compensating furnaces being connected to one another via reverse swiveling ferries.
3. Anlage zur Durchführung des Verfahrens nach Anspruch 1 , dadurch gekennzeichnet, daß diese aus einer Gießmaschine und mindestens drei nachgeordneten parallel zueinander verlaufenden Ausgleichsöfen besteht, die über Rückwärts-Schwenkfähren miteinander verbunden sind. 3. System for carrying out the method according to claim 1, characterized in that it consists of a casting machine and at least three downstream compensation furnaces running parallel to one another, which are connected to one another via reverse swiveling ferries.
4. Anlage zur Durchführung des Verfahrens nach Anspruch 1 , dadurch gekennzeichnet, daß diese mindestens aus drei parallelen Gießsträngen mit Ausgleichsöfen besteht, wobei die Ausgleichsöfen mit Vorwärts- Schwenkfähren miteinander verbunden sind.4. Plant for carrying out the method according to claim 1, characterized in that it consists of at least three parallel cast strands with equalizing furnaces, the equalizing furnaces being connected to one another with forward swivel ferries.
5. Anlage zur Durchführung des Verfahrens nach Anspruch 1 , dadurch gekennzeichnet, daß diese aus einer Gießmaschine mit mindestens drei nachgeschalteten Ausgleichsöfen besteht, die parallel zueinander verlaufen und die über Vorwärts-Schwenkfähren miteinander in Verbindung stehen.5. Plant for performing the method according to claim 1, characterized in that it consists of a casting machine with at least three downstream equalizing furnaces which run parallel to one another and which are connected to one another via forward swiveling ferries.
6. Anlage nach mindestens einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Schwenkfähren der äußeren Ausgleichsöfen auf den mittleren Ausgleichsofen arbeiten, der seinerseits in Produktionslinie mit dem Warmwalzwerk angeordnet ist.6. Plant according to at least one of claims 2 to 5, characterized in that the swivel ferries of the outer equalizing furnaces work on the middle equalizing furnace, which in turn is arranged in the production line with the hot rolling mill.
7. Anlage nach mindestens einem der vorhergehenden Ansprüche 2 bis 6, dadurch gekennzeichnet, daß den Gießmaschinen ein Stahlwerk/Hochofen vorgeordnet ist, deren Schmelzkapazität auf die Gießmaschinen, auf die Ausgleichsöfen und das Warmwalzwerk logistisch abgestimmt ist. 7. Plant according to at least one of the preceding claims 2 to 6, characterized in that the casting machines are preceded by a steel mill / blast furnace, the melting capacity of which is logistically coordinated with the casting machines, with the compensating furnaces and with the hot rolling mill.
EP99942900A 1998-08-28 1999-08-21 Method and device for producing hot-rolled wide strip, notably from thin slabs Withdrawn EP1107834A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1998139370 DE19839370A1 (en) 1998-08-28 1998-08-28 Process and plant for the production of hot wide strip from in particular thin slabs
DE19839370 1998-08-28
PCT/EP1999/006155 WO2000012235A1 (en) 1998-08-28 1999-08-21 Method and device for producing hot-rolled wide strip, notably from thin slabs

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EP1107834A1 true EP1107834A1 (en) 2001-06-20

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DE10109223C1 (en) 2001-02-26 2002-08-01 Siemens Ag Process for operating a casting and rolling plant
DE102010050647A1 (en) * 2009-11-21 2011-05-26 Sms Siemag Aktiengesellschaft Plant and method for casting and rolling metal
DE102009060824A1 (en) 2009-12-29 2011-06-30 SMS Siemag AG, 40237 Transport device for slabs
DE102010008292B4 (en) 2010-02-17 2024-03-07 Sms Group Gmbh Transport device for slabs
IT202100006407A1 (en) * 2021-03-17 2022-09-17 Danieli Off Mecc PROCESS AND PLANT FOR THE PRODUCTION OF FLAT LAMINATED PRODUCTS

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US4664701A (en) * 1986-01-15 1987-05-12 Blaw Knox Corporation Method and plant for fully continuous production of steel strip from ore
DE4041205A1 (en) * 1990-12-21 1992-06-25 Schloemann Siemag Ag Hot rolling of strip from thin cast sections
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