EP0406249A1 - Installation for manufacturing hot-rolled steel strip. - Google Patents

Installation for manufacturing hot-rolled steel strip.

Info

Publication number
EP0406249A1
EP0406249A1 EP89902023A EP89902023A EP0406249A1 EP 0406249 A1 EP0406249 A1 EP 0406249A1 EP 89902023 A EP89902023 A EP 89902023A EP 89902023 A EP89902023 A EP 89902023A EP 0406249 A1 EP0406249 A1 EP 0406249A1
Authority
EP
European Patent Office
Prior art keywords
rolled steel
plant
steel strip
furnace
mandrels
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
EP89902023A
Other languages
German (de)
French (fr)
Other versions
EP0406249B1 (en
Inventor
Hans-Dieter Hoppmann
Klaus Frommann
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19883809681 external-priority patent/DE3809681C1/en
Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT89902023T priority Critical patent/ATE78727T1/en
Publication of EP0406249A1 publication Critical patent/EP0406249A1/en
Application granted granted Critical
Publication of EP0406249B1 publication Critical patent/EP0406249B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • B21C47/245—Devices for the replacement of full reels by empty reels or vice versa, without considerable loss of time
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/68—Furnace coilers; Hot coilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
    • 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
    • B21B1/30—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 non-continuous process
    • B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-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
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Definitions

  • the invention relates to a system for producing hot-rolled steel strip from a continuously cast starting material, in which the cast strand is wound up into a bundle in a reel station after leaving the continuous casting system and is reeled off into a rolling mill in a further reel station after the bundle has been moved, the reel stations being fed into are arranged in a common oven.
  • Such systems are known. They have the advantage that continuously produced hot-rolled strip from a continuously cast master material is inexpensive because a considerable saving in energy is made possible solely by the fact that the facilities for reheating the slabs, intermediate transport devices and storage spaces required in conventional processes and systems are dispensed with.
  • the cast strand which has already been cast in the form of a strip makes it unnecessary to reduce the cross section with a high amount of deformation and high deformation energy and permits coils to be wound up immediately behind the continuous casting installation. This winding or reeling is necessary because the maximum casting speed at which the cast strand leaves the continuous caster is much lower than the lowest possible rolling speed of conventional roll stands.
  • the object of the present invention is to improve the arrangement of the reel stations within the furnace in such a way that unproblematic winding and unwinding of the cast strip and, if appropriate, intermediate storage is possible and the implementation of the federal government is simplified.
  • the invention proposes that the transport means for the bundles are winding mandrels which are movable on an orbit running horizontally or vertically in one plane.
  • winding mandrels run around in the invention so that tape can also be wound and converted which cannot be wound on mandrelless winding devices.
  • the winding mandrels with the furnace can be rotated about a vertical axis.
  • Another advantageous proposal of the invention provides that the circumferential path of the winding mandrels is self-contained and runs in a vertical plane and the winding mandrels can be moved step by step.
  • more than two winding mandrels can be moved simultaneously in the orbit, which can advantageously be moved on a circular path, but also it is conceivable to provide another self-contained movement path when the orbital plane is perpendicular.
  • the invention advantageously enables the winding mandrel to be driven in each case in the winding and unwinding station.
  • the mandrels are driven independently of one another and the drives which are fixed relative to the winding path of the mandrels are detachably coupled to the mandrels. This is recommended because the winding mandrels have to work with different drive speeds due to the different speeds for reeling and unwinding.
  • the mandrels can, if necessary, be brought into the respective winding position step by step and coupled there to the drives.
  • a further feature of the invention provides that a device for controlled heating of the cast strand to the reel or rolling temperature is arranged in front of and / or behind the furnace. Such devices can of course be omitted if the temperature of the furnace allows rolling without reheating or the temperature of the greeting strand corresponds to the reel temperature.
  • a device for separating the cold beginning of the band is provided according to another feature of the invention.
  • a gas-tight supply line for a furnace heating gas which is stationary with respect to the furnace is provided for heating the furnace.
  • the furnace can be rotated on a turntable or a turntable for rotating the furnace.
  • the winding mandrels are arranged in the inlet-side reel furnace of a Steckel rolling mill.
  • the decoiler station can be used in a known manner for multiple coiling and uncoiling of the strip rolled in reversing stitches, that is, in the manner of a plug-in oven as is known with only one coiler station.
  • the winding mandrels are arranged in a manner known per se before a cross-section shear and / or devices for descaling.
  • the cross-cut shear is required when the cast strand weight is greater than the coil weight of the coil located in the take-up reel station.
  • Descaling equipment is usually required behind the furnace to prevent the scale from rolling into the mill.
  • FIG. 2 is an enlarged view of the furnace according to the invention shown in FIG. 1,
  • FIG. 3 is an illustration of the furnace of FIG. 2 with four mandrels
  • Fig. 4 is a rotatable about a vertical axis furnace with integrated mandrels and
  • FIG. 5 shows a plan view of the furnace according to FIG. 4
  • Fig. 1 the continuous casting system is indicated at 1.
  • the cast strand B passes through a pair of scissors at 2 before it is introduced into the furnace 3 with the aid of the driver 6 and wound up on the mandrel 4.
  • the winding mandrel 4 can be moved on the circular orbit U shown in dashed lines in the direction of the arrow into a position in which the winding mandrel 5 is drawn in FIG. 2.
  • the cast strand B is unwound from the winding mandrel 5 with the aid of the driving apparatus 7 and is fed to the rolling mill 10 through the heating device 6, the cast strand B having previously passed through the descaling device 9.
  • a cooling section is indicated at 11, in which the strip is cooled before it is wound up at 12.
  • FIG. 3 An alternative is shown in FIG. 3, in which four winding mandrels 4, 4a, 5, 5b are arranged movably on the orbit U.
  • the winding mandrels have the same spacing from one another and allow intermediate storage of wound bundles in the stations 4a and 5a.
  • the device for heating the cast strand can also be located between the continuous casting installation 1 and the furnace 3; it can also be a special device only for heating the strip edges.
  • the embodiment of the invention shown in FIG. 4 is particularly favorable because the oven 3 can be kept small. As a result, the amount of heating gas used is small, which is important for a good energy balance.
  • the winding mandrels 4, 5 are arranged in a fixed manner within the furnace 3, while the furnace 3 itself can be rotated about the vertical axis 13.
  • the furnace 3 is mounted on a rotating ring 14 on guide rollers F and is moved by a stationary drive 15, which corresponds to a ring gear 16.
  • a gas supply 17 is provided, which can take place, for example, via a known rotary feedthrough.
  • a clamping device 19 for the band end 20 is provided in the region of the opening of the furnace 3, with which the same is held during the rotation of the furnace 3 by 180 degrees and thus during the transport of the coil into the unwinding position.
  • the fixed end of the bundle which now represents the beginning of the bundle for further processing of the federal government, can be pulled out by means of a driver 21 and can be fed to a separating device (not shown) which separates this beginning of the bundle, which has cooled outside the furnace.
  • the shafts of the mandrels 4, 5 are guided out of the furnace 3 on both sides thereof and provided with couplings 22 for the fixed drives.
  • the couplings can optionally be engaged or disengaged on one or the other side of the mandrels 4, 5, so that the mandrels 4, 5 can be driven easily and at different speeds.
  • the furnace 3 can always be rotated in the same or alternately in one or the other direction by 160 degrees.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

Installation pour la fabrication de rubans d'acier laminés à chaud à partir d'une charge coulée en continu, le lingot étant enroulé dans un four et déroulé après son transfert à une autre position. Les postes de bobinage à l'intérieur du four se déplacent en décrivant un mouvement fermé et vertical; pendant l'enroulement d'un rouleau, un autre rouleau peut être déroulé simultanément et conduit jusqu'au laminoir.Installation for the production of hot-rolled steel strips from a continuously cast load, the ingot being rolled up in an oven and unwound after its transfer to another position. The winding stations inside the oven move in a closed and vertical movement; during the winding of a roll, another roll can be unwound simultaneously and led to the rolling mill.

Description

Anlage zum Herstellen von warmgewalztem StahlbandPlant for the production of hot-rolled steel strip
Die Erfindung betrifft eine Anlage zum Herstellen von warmgewalztem Stahlband aus einem stranggegossenen Vormaterial, bei der der Gußstrang nach dem Verlassen der Stranggießanlage in einer Haspelstation zu einem Bund aufgehaspelt und nach Umsetzen des Bundes in einer weiteren Haspelstation abgehaspelt einem Walzwerk zugeführt wird, wobei die Haspelstationen in einem gemeinsamen Ofen angeordnet sind.The invention relates to a system for producing hot-rolled steel strip from a continuously cast starting material, in which the cast strand is wound up into a bundle in a reel station after leaving the continuous casting system and is reeled off into a rolling mill in a further reel station after the bundle has been moved, the reel stations being fed into are arranged in a common oven.
Derartige Anlagen sind bekannt. Sie haben den Vorteil, daB kontinuierlich hergestelltes warmgewalztes Band aus einem stranggegossenen Vorma t er i a l kostengünstig ist, weil eine erhebliche Einsparung an Energie allein dadurch ermöglicht wird, daß die bei herkömmlichen Verfahren und Anlagen notwendigen Einrichtungen zum Wiedererwärmen der Brammen, Zwischentransporteinrichtunge und Lagerplätze entfallen. Der bereits bandförmig gegossene Gußstrang macht eine Reduzierung des Querschnittes mit hohem Verformungsaufwand und hoher Verf ormungsenergie entbehrlich und gestattet, ein Aufwickeln des Gußstranges unmittelbar hinter der Stranggießanlage zu Bunden. Dieses Aufwickeln oder Aufhaspeln ist deshalb notwendig, weil die maximale Gießgeschwindigkeit, mit der der Gußstrang die Stranggießanlage verläßt, viel geringer ist als die niedrigstmögliche Walzgeschwindigkeit herkömmlicher Walzgerüste.Such systems are known. They have the advantage that continuously produced hot-rolled strip from a continuously cast master material is inexpensive because a considerable saving in energy is made possible solely by the fact that the facilities for reheating the slabs, intermediate transport devices and storage spaces required in conventional processes and systems are dispensed with. The cast strand which has already been cast in the form of a strip makes it unnecessary to reduce the cross section with a high amount of deformation and high deformation energy and permits coils to be wound up immediately behind the continuous casting installation. This winding or reeling is necessary because the maximum casting speed at which the cast strand leaves the continuous caster is much lower than the lowest possible rolling speed of conventional roll stands.
Es ist deshalb durch die gattungsbiIdende DE 32 41 745 C2 vorgeschlagen worden, den Gußstrang in einem Ofen dornlos zu einem Bund zu wickeln und nach Umsetzen des Bundes dieses diskontinuierlich wieder abzuwickeln und einem Walzwerk zuzuführen. Zum Wickeln wird eine als Coil-Box bekannte dornlose Einrichtung verwendet, mit der relativ dicke Gußstränge gewickel werden können. ie bekannte Anlage mit der Anordnung der dornlosen Haspetstationen innerhalb des Ofens ist konstruktiv ungünstig und sehr aufwendig. Außerde ist aas Wickeln ohne Dorn nur für relativ dicke Gußstränge als betriebssicher anzusehen.It has therefore been proposed by the generic DE 32 41 745 C2 to wind the cast strand in a furnace without a thorn into a bundle and, after the bundle has been implemented, to unwind it discontinuously and to feed it to a rolling mill. A thornless device known as a coil box is used for winding, with which relatively thick cast strands can be wound. The well-known system with the arrangement of the thornless hasp stations within the furnace is structurally unfavorable and very complex. In addition, winding without a mandrel can only be regarded as reliable for relatively thick cast strands.
Aufgabe der vorliegenden Erfindung ist, ausgehend von dem vorstehend beschriebenen Stand der Technik, die Anordnung der Haspelstationen innerhalb des Ofens so zu verbessern, daß ein problemloses Auf und Abhaspeln des Gußbandes und ggf. Zwischenspeichern möglich und das Umsetzen des Bundes vereinfacht wird.The object of the present invention, based on the prior art described above, is to improve the arrangement of the reel stations within the furnace in such a way that unproblematic winding and unwinding of the cast strip and, if appropriate, intermediate storage is possible and the implementation of the federal government is simplified.
Zur Lösung der Aufgabe schlägt die Erfindung vor, daß die Transportmittel für die Bunde Wickeldorne sind, die auf einer in einer Ebene horizontal oder vertikal verlaufenden Umlaufbahn bewegbar sind.To achieve the object, the invention proposes that the transport means for the bundles are winding mandrels which are movable on an orbit running horizontally or vertically in one plane.
Anders als beim Stand der Technik laufen bei der Erfindung Wickeldorne um so daß auch Band gewickelt und umgesetzt werden kann, das auf dornlosen Wickeleinrichtungen nicht gewickelt werden kann.In contrast to the prior art, winding mandrels run around in the invention so that tape can also be wound and converted which cannot be wound on mandrelless winding devices.
Eine besonders günstige Lösung hinsichtlich Platzbedarf und Energieverbrauch ergibt sich, wenn nach einem weiteren Merkmal der Erfindung die Wickeldorne mit dem Ofen um eine vertikale Achse drehbar sind.A particularly favorable solution with regard to space requirements and energy consumption results if, according to a further feature of the invention, the winding mandrels with the furnace can be rotated about a vertical axis.
Ein anderer vorteilhafter Vorschlag der Erfindung sieht vor, daß die Umtaufbahn der Wickeldorne in sich geschlossen ist und in einer vertikal Ebene verläuft und die Wickeldorne schrittweise bewegbar sind.Another advantageous proposal of the invention provides that the circumferential path of the winding mandrels is self-contained and runs in a vertical plane and the winding mandrels can be moved step by step.
Vorzugsweise sind, insbesondere bei vertikal umlaufenden Wickeldornen, mehr als zwei Wickeldorne gleichzeitig in der Umlaufbahn bewegbar, die günstigerweise auf einer Kreisbahn bewegbar sind, wobei es jedoch auch denkbar ist, eine andere in sich geschlossene Bewegungsbahn dann vorzusehen, wenn die Umlaufebene senkrecht verläuft.Preferably, in particular in the case of vertically rotating winding mandrels, more than two winding mandrels can be moved simultaneously in the orbit, which can advantageously be moved on a circular path, but also it is conceivable to provide another self-contained movement path when the orbital plane is perpendicular.
Die Erfindung ermöglicht in günstiger Weise, jeweils in der Auf und Abwickelstation den Wickeldorn anzutreiben.The invention advantageously enables the winding mandrel to be driven in each case in the winding and unwinding station.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß die Wickeldorne unabhängig voneinander angetrieben und die relativ zur Umlaulbahn der wickeldorne feststehenden Antriebe mit den Wickeldornen lösbar gekuppelt sind. Dies empfiehlt sich, da die Wickeldorne aufgrund der unterschiedlichen Geschwindigkeiten zum Aufhaspeln und Abhaspeln mit unterschiedlichen Antriebsgeschwindigkeiten arbeiten müssen. Die Wickeldorne können gegebenenfalls schrittweise in die jeweilige Wickelposition gebracht werden und dort mit den Antrieben gekoppelt werden.In a further embodiment of the invention it is provided that the mandrels are driven independently of one another and the drives which are fixed relative to the winding path of the mandrels are detachably coupled to the mandrels. This is recommended because the winding mandrels have to work with different drive speeds due to the different speeds for reeling and unwinding. The mandrels can, if necessary, be brought into the respective winding position step by step and coupled there to the drives.
Sofern die Temperatur des Gußstranges nicht die für das Haspeln oder Walzen notwendigen Werte aufweist, ist nach einem weiteren Merkmal der Erfindung vorgesehen, daß vor und/oder hinter dem Ofen eine Vorrichtung zum gesteuerten Erwärmen des Gußstranges auf Haspel oder Walztemperatur angeordnet ist. Solche Einrichtungen können selbstverständlich entfallen, wenn die Temperatur des Ofens ein Walzen ohne Nacherwärmung ermöglicht bzw. die Temperatur des Grußstranges der Haspel temperatur entspricht.If the temperature of the cast strand does not have the values necessary for coiling or rolling, a further feature of the invention provides that a device for controlled heating of the cast strand to the reel or rolling temperature is arranged in front of and / or behind the furnace. Such devices can of course be omitted if the temperature of the furnace allows rolling without reheating or the temperature of the greeting strand corresponds to the reel temperature.
Für den Fall, daß die Wickeldorne gemeinsam mit dem Ofen um eine senkrechte Achse drehbar sind, wird nach einem anderen Merkmal der Erfindung vorgeschlagen, im Bereich der ein- und auslaufseitigen Öffnungen des Ofens Klemmeinrichtungen für den Bandanfang bzw. das Bandende vorzusehen. Diese Klemmeinrichtungen halten das Bandende bis zum Verschwenken der Aufwickelstation in die Abwickelposition, so daß ein mühsames Einfädeln des nunmehr Bandanfanges beim Beginn des Abwickel Vorganges entfällt.In the event that the winding mandrels can be rotated together with the furnace about a vertical axis, it is proposed according to another feature of the invention to provide clamping devices for the beginning or end of the band in the region of the openings on the inlet and outlet sides of the furnace. These clamping devices hold the tape end up to Swiveling the winding station into the unwinding position so that there is no laborious threading of the now beginning of the tape at the start of the unwinding process.
Weil wegen des Haltens des Bandendes bzw. des Bandanfanges ein Erkalten desselben zu erwarten ist, ist nach einem anderen Merkmal der Erfindung eine Einrichtung zum Abtrennen des kalten Bundanfanges vorgesehen.Because cooling of the end of the band or the beginning of the band is to be expected due to the fact that the end of the band is beginning to cool, a device for separating the cold beginning of the band is provided according to another feature of the invention.
Zum Erhitzen des Ofens ist nach einem weiteren Merkmal der Erfindung eine gasdichte, gegenüber dem Ofen ortsfeste Zuleitung für ein Ofenheizgas vorgesehen.According to a further feature of the invention, a gas-tight supply line for a furnace heating gas which is stationary with respect to the furnace is provided for heating the furnace.
Zum Drehen des Ofens kann dieser nach einem weiteren Merkmal der Erfindung auf einer Drehscheibe bzw. einem Drehkranz bewegbar sein.According to a further feature of the invention, the furnace can be rotated on a turntable or a turntable for rotating the furnace.
In einer besonders günstigen Ausgestaltung der Erfindung mit vertikaler Umlaufbahn ist vorgesehen, daß die Wickeldorne in dem einlauf seitigen Haspelofen eines Steckelwalzwerkes angeordnet sind. Die Abwickelhaspelstation kann in bekannter Weise zum mehrfachen Auf- und Abhaspeln des in Reversierstichen gewalzten Bandes verwendet werden, also in der Art eines Steckelofens, wie er mit nur einer Haspelstation bekannt ist.In a particularly favorable embodiment of the invention with a vertical orbit, it is provided that the winding mandrels are arranged in the inlet-side reel furnace of a Steckel rolling mill. The decoiler station can be used in a known manner for multiple coiling and uncoiling of the strip rolled in reversing stitches, that is, in the manner of a plug-in oven as is known with only one coiler station.
Schließlich wird vorgeschlagen, daß den Wickeldornen in an sich bekannter Weise eine Querteilschere vor und/oder Einrichtungen zum Entzundern nachgeordnet sind. Die Querteilschere ist dann erforderlich, wenn das Gußstranggewicht größer als das Bundgewicht des in der Aufwickelhaspelstation befindlichen Bundes ist. Einrichtungen zum Entzundern sind in der Regel hinter dem Ofen erforderlich, um ein Einwalzen des Zunders im Walzwerk zu verhindern. Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachfolgend beschrieben. Es zeigt:Finally, it is proposed that the winding mandrels are arranged in a manner known per se before a cross-section shear and / or devices for descaling. The cross-cut shear is required when the cast strand weight is greater than the coil weight of the coil located in the take-up reel station. Descaling equipment is usually required behind the furnace to prevent the scale from rolling into the mill. Embodiments of the invention are shown in the drawing and are described below. It shows:
Fig. 1 die grob vereinfachte Ansicht einer Anlage zum Herstellen von warmgewalztem Stahlband mit einem erf indunsgemäßen Ofen,1 shows the roughly simplified view of a plant for producing hot-rolled steel strip with an inventive furnace,
Fig. 2 eine vergrößerte Ansicht des erfindungsgemäßen Ofens nach Fig. 1,2 is an enlarged view of the furnace according to the invention shown in FIG. 1,
Fig. 3 eine Darstellung des Ofens nach Fig. 2 mit vier Wicketdornen,3 is an illustration of the furnace of FIG. 2 with four mandrels,
Fig. 4 einen um eine senkrechte Achse drehbaren Ofen mit integrierten Wickeldornen undFig. 4 is a rotatable about a vertical axis furnace with integrated mandrels and
Fig. 5 eine Draufsicht auf den Ofen nach Figur 45 shows a plan view of the furnace according to FIG. 4
In Fig. 1 ist bei 1 die Stranggιeßanlage angedeutet. Der Gußstrang B durchläuft bei 2 eine Schere, bevor er mit Hilfe des Treibers 6 in den Ofen 3 eingeführt und auf dem Wickeldorn 4 aufgehaspelt wird.In Fig. 1, the continuous casting system is indicated at 1. The cast strand B passes through a pair of scissors at 2 before it is introduced into the furnace 3 with the aid of the driver 6 and wound up on the mandrel 4.
Wie in Fig. 2 vergrößert dargestellt, ist der Wickeldorn 4 auf der gestrichelt gezeichneten kreisförmigen Umlaufbahn U in Pfeilrichtung in eine Position verbringbar, in der in Fig. 2 der Wickeldorn 5 gezeichnet ist. Von dem Wickeldorn 5 wird mit Hilfe des Treibapparates 7 der Gußstrang B abgewickelt und durch die Vorrichtung zum Erwärmen 6 hindurch dem Walzwerk 10 zugeführt, wobei der Gußstrang B zuvor die Einrichtung zum Entzundern 9 durchläuft. Bei 11 ist eine Kühlstrecke angedeutet, in der das Band abgekühlt wird, bevor es bei 12 aufgehaspelt wird. In Fig. 3 ist eine Alternative dargestellt, bei der vier Wickeldorne 4, 4a, 5, 5b auf der Umlaufbahn U bewegbar angeordnet sind. Die Wickeldorne haben gleiche Abstände voneinander und gestatten ein Zwischenspeichern von gewickelten Bunden in den Stationen 4a und 5a.As shown enlarged in FIG. 2, the winding mandrel 4 can be moved on the circular orbit U shown in dashed lines in the direction of the arrow into a position in which the winding mandrel 5 is drawn in FIG. 2. The cast strand B is unwound from the winding mandrel 5 with the aid of the driving apparatus 7 and is fed to the rolling mill 10 through the heating device 6, the cast strand B having previously passed through the descaling device 9. A cooling section is indicated at 11, in which the strip is cooled before it is wound up at 12. An alternative is shown in FIG. 3, in which four winding mandrels 4, 4a, 5, 5b are arranged movably on the orbit U. The winding mandrels have the same spacing from one another and allow intermediate storage of wound bundles in the stations 4a and 5a.
In einer nicht dargestellten Variante kann die Vorrichtung zur Erwärmung des Gußstranges sich auch zwischen Stranggießanlage 1 und Ofen 3 befinden; sie kann auch eine spezielle Vorrichtung nur zum Erwärmen der Bandkanten sein.In a variant not shown, the device for heating the cast strand can also be located between the continuous casting installation 1 and the furnace 3; it can also be a special device only for heating the strip edges.
Die in der Figur 4 gezeigte Ausführung der Erfindung ist besonders günstig, weil der Ofen 3 klein gehalten werden kann. Dadurch ist die Menge des verwendeten Heizgases gering, was für eine günstige Energiebilanz wichtig ist. Wie dargestellt, sind die Wickeldorne 4, 5 innerhalb des Ofens 3 ortsfest angeordnet, während der Ofen 3 selbst um die senkrechte Achse 13 drehbar ist. Zu diesem Zweck ist der Ofen 3 auf einem Drehkranz 14 auf Führungsrollen F gelagert und wird von einem ortsfesten Antrieb 15 bewegt, der mit einem Zahnkranz 16 korrespondiert. Im oberen Bereich des Ofens 3 ist eine Gaszufuhr 17 vorgesehen, die beispielsweise über eine bekannte Drehdurchführung erfolgen kann. Einlaufseitig ist im Bereich der Öffnung des Ofens 3 eine Klemmvorrichtung 19 für das Bandende 20 vorgesehen, mit der dasselbe während des Drehens des Ofens 3 um 180 Grad und damit des Transportierens des Bundes in die Abwickelposition gehalten wird. Mittels eines Treibers 21 ist das festgehaltene Bundende, das nunmehr dem Bundanfang für die Weiterverarbeitung des Bundes darstellt, ausziehbar und einer (nicht dargestellten) Trenneinrichtung zuführbar, die diesen Bundanfang, der außerhalb des Ofens erkaltet ist, abtrennt. Wie in Figur 5 in der Draufsicht dargestellt, sind die Wellen der Wickeldorne 4, 5 auf beiden Seiten des Ofens 3 aus diesem herausgeführt und mit Kupplungen 22 für die ortsfesten Antriebe versehen. Nach Verschwenken des Ofens in die jeweiligen Auf- bzw. Abwickelpositionen lassen sich die Kupplungen wahlweise auf der einen oder anderen Seite der Wickeldorne 4, 5 ein- oder auskuppeln, so daß ein Antrieb der Wickeldorne 4, 5 problemlos und mit unterschiedlichen Geschwindigkeiten möglich ist. Der Ofen 3 kann stets in der gleichen oder auch abwechselnd in der einen oder anderen Richtung um jeweils 160 Grad gedreht werden. The embodiment of the invention shown in FIG. 4 is particularly favorable because the oven 3 can be kept small. As a result, the amount of heating gas used is small, which is important for a good energy balance. As shown, the winding mandrels 4, 5 are arranged in a fixed manner within the furnace 3, while the furnace 3 itself can be rotated about the vertical axis 13. For this purpose, the furnace 3 is mounted on a rotating ring 14 on guide rollers F and is moved by a stationary drive 15, which corresponds to a ring gear 16. In the upper area of the furnace 3, a gas supply 17 is provided, which can take place, for example, via a known rotary feedthrough. On the inlet side, a clamping device 19 for the band end 20 is provided in the region of the opening of the furnace 3, with which the same is held during the rotation of the furnace 3 by 180 degrees and thus during the transport of the coil into the unwinding position. The fixed end of the bundle, which now represents the beginning of the bundle for further processing of the federal government, can be pulled out by means of a driver 21 and can be fed to a separating device (not shown) which separates this beginning of the bundle, which has cooled outside the furnace. As shown in Figure 5 in plan view, the shafts of the mandrels 4, 5 are guided out of the furnace 3 on both sides thereof and provided with couplings 22 for the fixed drives. After swiveling the furnace into the respective winding or unwinding positions, the couplings can optionally be engaged or disengaged on one or the other side of the mandrels 4, 5, so that the mandrels 4, 5 can be driven easily and at different speeds. The furnace 3 can always be rotated in the same or alternately in one or the other direction by 160 degrees.

Claims

PatentansprücheClaims
Anlage zum Herstellen von warmgewalztem Stahlband aus stranggegossenem Vormaterial, in der der Gußstrang nach Verlassen der Stranggießanlage in einer Aufwickelvorrichtung zu einem Bund aufgewickelt und der Bund mit Hilfe von Transportmitteln in eine Abwickelvorrichtung umsetzbar ist, von der aus der abgewickelte Gußstrang einem Walzwerk zugeführt wird, wobei die Auf- und Abwickelvorrichtung und die Transportmittel zum Umsetzen des Bundes in einem Ofen angeordnet sind, dadurch gekennzeichnet, daß die Transportmittel für die Bunde Wickeldorne (4, 5) sind, die auf einer in einer Ebene verlaufenden Umlaufbahn (U) bewegbar sind. Plant for the production of hot-rolled steel strip from continuously cast starting material, in which the cast strand is wound up into a bundle in a winding device after leaving the continuous casting installation and the bundle can be converted into a winding device with the aid of transport means, from which the unwound cast strand is fed to a rolling mill, whereby the winding and unwinding device and the transport means for moving the bundle are arranged in a furnace, characterized in that the transport means for the bundles are winding mandrels (4, 5) which can be moved on an orbit (U) running in one plane.
2. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 1, dadurch gekennzeichnet, daß die Wickeldorne (4, 5) mit dem Ofen (3) um eine vertikale Achse drehbar sind.2. Plant for producing hot-rolled steel strip according to claim 1, characterized in that the mandrels (4, 5) with the furnace (3) are rotatable about a vertical axis.
3. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 1, dadurch gekennzeichnet, daß die Umlaufbahn der Wickeldorne (4, 5) in sich geschlossen ist und in einer vertikalen Ebene verläuft und die Wickeldorne 14,5) schrittweise bewegbar sind.3. Plant for producing hot-rolled steel strip according to claim 1, characterized in that the orbit of the mandrels (4, 5) is self-contained and extends in a vertical plane and the mandrels 14, 5) can be moved step by step.
4. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 1 oder4. Plant for producing hot rolled steel strip according to claim 1 or
3, dadurch gekennzeichnet, daß mehr als zwei Wickeldorne (4, 5) gleichzeitig in der Umlaufbahn3, characterized in that more than two mandrels (4, 5) in orbit simultaneously
(U) bewegbar sind.(U) are movable.
5. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 3, dadurch gekennzeichnet, daß die Wickeldorne (4,5) auf einer Kreisbahn bewegbar sind.5. Plant for producing hot-rolled steel strip according to claim 3, characterized in that the mandrels (4,5) are movable on a circular path.
Anlage zum Herstellen von warmgewalztem Stahlband nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß jeder Wickeldorn (4, 5) mindestens in den Auf- undPlant for producing hot-rolled steel strip according to claims 1 to 5, characterized in that each winding mandrel (4, 5) at least in the up and
Abwickelpositionen antreibbar sind. Unwinding positions are drivable.
7. Anlage zum Herstellen von warmgewalztem Stahlbano nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß die Wickeldorne (4, 5) unabhängig voneinander über relativ zu ihrer Umlaufbahn (U) feststehende Antriebe antreibbar sind, die mit den Wickeldornen lösbar gekuppelt sind.7. Plant for the production of hot-rolled steel bano according to claim 1 to 6, characterized in that the mandrels (4, 5) independently of one another via drives relative to their orbit (U) can be driven, which are detachably coupled to the mandrels.
8. Anlage zum Herstellen von warmgewalztem Stahlband nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß vor und/oder hinter dem Ofen (3) eine Vorrichtung (8) zum gesteuerten Erwärmen des Gußstranges (B) auf Wickel- oder Walztemperatur angeordnet ist.8. Plant for the production of hot-rolled steel strip according to claims 1 to 7, characterized in that a device (8) for controlled heating of the cast strand (B) to the winding or rolling temperature is arranged in front of and / or behind the furnace (3).
9. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 2, dadurch gekennzeichnet, daß im Bereich der ein- und auslauf seitigen Öffnung des Ofens (3) Klemmeinrichtungen C19) für den Bandanfang bzw. das Bandende (20) vorgesehen sind.9. Plant for the production of hot-rolled steel strip according to claim 2, characterized in that in the region of the inlet and outlet side opening of the furnace (3) clamping devices C19) are provided for the beginning or end of the strip (20).
10. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 2 und 9, dadurch gekennzeichnet, daß vor und hinter dem Ofen (3) eine Einrichtung zum Abtrennen des kalten Bundanfanges (19) vorgesehen ist. 10. Plant for producing hot-rolled steel strip according to claim 2 and 9, characterized in that a device for separating the cold fret beginning (19) is provided in front of and behind the furnace (3).
11. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 2, gekennzeichnet durch eine gegenüber dem Ofen (3) ortsfeste gasdichte Zuleitung (17) für Ofenheizgas.11. Plant for producing hot-rolled steel strip according to claim 2, characterized by a gas-tight feed line (17) for furnace heating gas which is stationary relative to the furnace (3).
12. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 2, dadurch gekennzeichnet, daß der Ofen (3) auf einer Drehscheibe bzw. einem Drehkranz (14) bewegbar ist.12. Plant for producing hot-rolled steel strip according to claim 2, characterized in that the furnace (3) on a turntable or a turntable (14) is movable.
13. Anlage zum Herstellen von warmgewalztem Stahlband nach Anspruch 3 bis 7, dadurch gekennzeichnet, daß die Wickeldorne (4, 5) in dem einlaufseitigen Haspelofen eines13. Plant for the production of hot-rolled steel strip according to claim 3 to 7, characterized in that the mandrels (4, 5) in the reel furnace on the inlet side
Steckelwalzwerkes angeordnet sind.Steckel mill are arranged.
14. Anlage zum Herstellen von warmgewalztem Stahlband nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wickeldorne (4, 5) in an sich bekannter Weise einer Querteilschere (2) vorgeordnet und/oder Einrichtungen zum Entzundern (9) nachgeordnet sind. 14. Plant for the production of hot-rolled steel strip according to one or more of the preceding claims, characterized in that the winding mandrels (4, 5) are arranged in a manner known per se a cross-cutting shear (2) and / or devices for descaling (9) are arranged downstream.
EP89902023A 1988-03-17 1989-02-06 Installation for manufacturing hot-rolled steel strip Expired - Lifetime EP0406249B1 (en)

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AT89902023T ATE78727T1 (en) 1988-03-17 1989-02-06 PLANT FOR THE MANUFACTURE OF HOT ROLLED STEEL STRIP.

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DE19883809681 DE3809681C1 (en) 1987-12-31 1988-03-17 Plant for the production of hot-rolled steel
DE3809681 1988-03-17

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EP0406249B1 EP0406249B1 (en) 1992-07-29

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DE (1) DE58901955D1 (en)
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US5335713A (en) 1994-08-09
ES2015140A6 (en) 1990-08-01
DE58901955D1 (en) 1992-09-03
EP0406249B1 (en) 1992-07-29
CA1322480C (en) 1993-09-28
WO1989008512A1 (en) 1989-09-21

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