EP0879100B1 - Process and device for reverse rolling metal strips - Google Patents
Process and device for reverse rolling metal strips Download PDFInfo
- Publication number
- EP0879100B1 EP0879100B1 EP97900893A EP97900893A EP0879100B1 EP 0879100 B1 EP0879100 B1 EP 0879100B1 EP 97900893 A EP97900893 A EP 97900893A EP 97900893 A EP97900893 A EP 97900893A EP 0879100 B1 EP0879100 B1 EP 0879100B1
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- EP
- European Patent Office
- Prior art keywords
- strip
- rolling
- several
- strips
- coiling
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—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
- B21B1/22—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
- 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
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- 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
-
- 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
-
- 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 methods for producing a hot reversely rolled strip, in particular a steel strip, a strip being cast either directly or by continuous casting is produced by continuous casting and subsequent roughing, then the strip in hot rolled several passes and wound into a bundle after each pass is, as well as a device for performing the method.
- a method for reversing rolling a hot strip is, for example, also in the DE-A-29 00 648.
- the tape is applied after each Roll pass by a winding device designed as a reel furnace.
- a winding device designed as a reel furnace.
- a hot rolling process of this type and the type described at the outset result temperature differences between the strip ends and strip edges during rolling and belt middle parts.
- temperature compensation is to the extent that the strip ends or strip edges in turn are not too ideal from the ideal rolling temperature very different temperature, not possible, as this is a longer break between would require two successive roll passes, i.e. the rolling process would have to to be interrupted.
- Inadequate use of the reversing roller device as well The result would be a decline in production.
- the invention aims at avoiding these disadvantages and difficulties and presents itself the task, a method of the type described above and a device for To carry out the process, which make it possible, in combination with the Production of a strip in a continuous caster on the one hand the reversing roller device to make the best possible use over their entire service life, i.e. a rolling mill without Maintain interruptions and without loss of production volume and yet optimal for the strip to be rolled while saving as much energy as possible To achieve temperature conditions. Furthermore, temperature differences between the Tape ends and the tape edges and tape center pieces are kept so low that they neither for the rolling process, for the rolling devices, nor for the quality of the strip have adverse effects.
- This object is achieved according to the invention in a method of the type described in the introduction solved in that two or more strips are alternately rolled and during the Rolling one of the strips in at least one roll pass the other strip or the others The tapes remain in a waiting position wound into a bundle.
- the method according to the invention also enables lower final thicknesses to be achieved, e.g. without additional energy expenditure. Furthermore, there is an improvement in the geometric Product tolerances (profile, thickness, flatness) in a simple manner and without great Additional effort possible.
- the temperature compensation also means that The increase in the rolling force when the strip ends are inserted into the roll stand is minimized and the Roller bearings less stressed.
- the band or bands it is expedient for the band or bands to form a bundle a heat compensation carried out, e.g. including the Band end or the band ends.
- the method according to the invention enables not only optimal temperature conditions adjust for rolling, but it can also be used for that To improve the material properties of the tape before or after a stitch acceptance, i.e. by a specific temperature effect, for example depending on the thickness and Quality of the rolled stock, physical properties of the strip or structure of the Band to improve, etc. in that for the tape or tapes in a bundle wound waiting position a heat treatment, in particular heating, is carried out, etc. including the tape end or the tape ends.
- a heat treatment in particular heating
- the Reversing roll stand provided two winding devices.
- the winding devices are advantageously equipped with a heat insulation jacket. she could also be set up in a heated room.
- the winding devices are expediently designed as reel furnaces and preferably with a heating device.
- the winding device In order to be able to wind up the tape ends completely, it is advisable Provide the winding device with a device that winds up and unwinds the end of the tape.
- Winding device with an insulated, possibly heatable, largely closed inlet or outlet zone is provided.
- At least one winding device with a protective gas device is advantageous fitted.
- Fig. 1 is a schematically illustrated arrangement of a Playing winding device in side view. 2 and 3 show in to Fig. 1 analog representation of other embodiments. 4 to 6 is the arrangement according to the invention a winding device each shown in a network with a continuous caster.
- Fig. 1 shows an overall arrangement of a device for performing a Reverse rolling with a reversing roll stand 1, either as a roughing stand or as Finishing stand (Steckel scaffold) can be designed.
- a device for performing a Reverse rolling with a reversing roll stand 1 either as a roughing stand or as Finishing stand (Steckel scaffold) can be designed.
- On one side 2 of the Reversing roll stand 1 are two winding devices designed as reel furnaces 3 and 3 ' arranged.
- 3 to 3 " can be arranged between the coiler furnaces instead of the single one Reversing roll stand 1 also a multiple stand, in which the belt 9 or 9 'at one Passes two or more stitch approvals.
- the reel ovens 3 to 3 " are equipped with drivable reel mandrels 5 and each with equipped with a heat-insulated jacket 6. If necessary, they have heating devices 7 to a certain temperature level in the interior 8, 8 'of each coiler 3 to 3 " hold.
- the reel furnaces 3 to 3 " are designed in such a way that the strip ends of the rolling strip 9, 9 'completely drawn into the interior 8 of the reel furnaces 3 to 3 " can be.
- the reel furnaces 3 to 3 " have corresponding devices on how drive rollers 10 that can grasp the tape end and from each Can pull out reel furnace 3 to 3 ", as well as so-called coil opener 11, that is Wedge-shaped, 12 adjustable devices on the wound coil - also Called collar opening swords - which allow the end of the band to be detached from collar 12 and lead out of the interior 8 of each reel furnace 3 to 3 "
- Bundle opener 11 on the bundle surface of a bundle 12 wound on a coiler mandrel 5 serve actuators not shown.
- a 3 to 3 "coiler can also be used with an insulated, possibly heatable Entry or exit zone may be provided, which is optionally pivotable to the Bring the belt and the entry and exit zones out of the roller table area.
- two strips 9, 9 ' can be rolled alternately become. While one strip 9 is being rolled, the other strip 9 'in the second is both on the side 2 of the reversing roll stand 1 adjacent coiler furnaces 3, 3 'in to a bundle 12 wound waiting position. While the band 9 'remains here until it is used for rolling, i.e. the other band 9 in two or more roll passes rolled, temperature compensation or heat treatment, possibly even be carried out under a protective gas atmosphere. Then when the second strip 9 'is rolled is, the first rolled strip 9 is in a waiting position wound into a bundle and can in turn be subjected to temperature compensation for subsequent rolling passes become.
- reel mandrels 5 arranged adjacent and surrounded by a common heat protection housing 6. 2
- the reel mandrels 5 are in a horizontally adjacent arrangement and according to FIG. 3 arranged in a vertically adjacent arrangement.
- a continuous caster 13 with a mold 14, a roller guide track 15 and one of these downstream separating device 16, a temperature compensation furnace 17th downstream to accommodate tapes separated from the strand.
- Strand 18 is like him emerges from the mold 14, not thin enough to be wound in the solidified state To be able to be, is in the continuous caster not shown Roughing mill provided for rolling a windable strand 18.
- winding devices 3 to 3 "'and a reversing roll stand 1 is arranged in between. According to that shown in Fig. 4 Exemplary embodiments are on each side 2 and 4 of the reversing roll stand 1, respectively two reel furnaces 3, 3 'and 3 ", 3"' are provided. It could also be more or just on one of the two sides 2 and 4 of the reversing roll stand 1 is a single coiler.
- the function is as follows: First, a band 9 'separated from the strand 18 is inserted into the Temperature compensation furnace 17 directly fed, etc. with a the Continuous casting speed significantly higher take-off speed. After one The band 9 'is temperature equalized according to the method according to the invention alternately rolled with a second strip 9 previously separated from the strand 18.
- the method according to the invention makes it possible - as shown in FIG To waive temperature compensation furnace 17, namely it can in the strand conveying direction
- First arranged reel furnace 3 take over this function without the inventive Reverse rolling process is disrupted.
- 2 and 4 of the Reversing roll stand each arranged at least two reel furnaces 3, 3 'and 3 ", 3"'.
- FIG. 6 shows a special design of a reel furnace 3 arranged first in the strand outlet direction, which has its own tape inlet opening 19 and its own tape outlet opening 20, similar to shown in Fig. 3.
- the coiler mandrel 21 (there are two coiler mandrels 21 here symmetrical provided to the axis of symmetry) of this reel furnace 3 is by means of an adjusting device in a Winding start position I at the tape inlet opening 19 for the purpose of detecting the beginning of the tape and in an unwinding position II in which a coil 12 wound on the coiler mandrel 21 against a pressure roller 22 which is fixedly arranged or to be pressed on the reel furnace 3 is pressed, movable, the pressure roller 22 in the unwinding direction Tape exit opening 20 is upstream.
- a reel furnace of this type is in the Austrian Patent application A 647/95 described in more detail
- the invention is not limited to the exemplary embodiments shown, but rather can be modified in several ways.
- a facility 1 on the side 4 of the reversing roll stand 1 also two reel furnaces be arranged, which results in the possibility of a band 9 or 9 'after a odd number of passes a temperature compensation or a heat treatment to undergo. If more than two strips are to be rolled alternately, one is provide the appropriate number of reel ovens.
- the following example of a rolling schedule shows what time for a Band 9 or 9 'for a heat treatment of two alternately rolled strips 9, 9' a device according to FIG. 1 is available.
- Each strip 9, 9 ' is rolled in seven stitches each with a temperature equalization or a holding time, the or the extends over two key times.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Description
Die Erfindung betrifft Verfahren zum Herstellen eines warm-reversiergewalzten Bandes, insbesondere eines Stahlbandes, wobei ein Band entweder durch Stranggießen direkt oder durch Stranggießen und anschließendes Vorwalzen hergestellt wird, anschließend das Band in mehreren Walzstichen warmgewalzt und nach jedem Walzstich zu einem Bund gewickelt wird, sowie eine Einrichtung zur Durchführung des Verfahrens.The invention relates to methods for producing a hot reversely rolled strip, in particular a steel strip, a strip being cast either directly or by continuous casting is produced by continuous casting and subsequent roughing, then the strip in hot rolled several passes and wound into a bundle after each pass is, as well as a device for performing the method.
Ein Verfahren dieser Art ist aus der JP-A-2-37903 bekannt.A method of this kind is known from JP-A-2-37903.
Ein Verfahren zum Reversierwalzen eines Warmbandes ist beispielsweise auch in der DE-A - 29 00 648 beschrieben. Das Band wird bei diesem bekannten Verfahren nach jedem Walzstich von einer als Haspelofen ausgebildeten Wickelvorrichtung aufgenommen. Es sind zwei Haspelöfen mit einem dazwischen angeordneten Warm-Reversierwalzgerüst vorgesehen; das Band wird im Hin- und Hergang in das Warm-Reversierwalzgerüst zwischen den Haspelöfen mehrmals eingestochen, bis das Band die gewünschte Enddicke erreicht hat.A method for reversing rolling a hot strip is, for example, also in the DE-A-29 00 648. In this known method, the tape is applied after each Roll pass by a winding device designed as a reel furnace. There are two reel furnaces with a hot reversing roll stand arranged in between; the strip is moved back and forth into the hot reversing mill between the Insert the coiler several times until the strip has reached the desired final thickness.
Bei einem Warm-Walzverfahren dieser Art und der eingangs beschriebenen Art ergeben sich im Laufe des Walzens Temperaturunterschiede zwischen den Bandenden sowie Bandkanten und Bandmittelteilen. Durch das Aufhaspeln des Bandes gelingt es zwar, allzu große Temperaturunterschiede zu vermeiden, jedoch ist ein Temperaturausgleich in dem Maße, daß die Bandenden bzw. Bandkanten wiederum eine von der idealen Walztemperatur nicht allzu sehr abweichende Temperatur aufweisen, nicht möglich, da dies eine längere Pause zwischen zwei aufeinanderfolgenden Walzstichen erfordern würde, d.h. das Walzverfahren müßte unterbrochen werden. Eine unzureichende Nutzung der Reversierwalzeinrichtung sowie ein Produktionsrückgang wären die Folge.A hot rolling process of this type and the type described at the outset result temperature differences between the strip ends and strip edges during rolling and belt middle parts. By winding the tape, it is possible to make it too big Avoid temperature differences, but temperature compensation is to the extent that the strip ends or strip edges in turn are not too ideal from the ideal rolling temperature very different temperature, not possible, as this is a longer break between would require two successive roll passes, i.e. the rolling process would have to to be interrupted. Inadequate use of the reversing roller device as well The result would be a decline in production.
Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, ein Verfahren der eingangs beschriebenen Art sowie eine Einrichtung zur Durchführung des Verfahrens zu schaffen, welche es ermöglichen, in Kombination mit der Herstellung eines Bandes in einer Stranggießanlage einerseits die Reversierwalzeinrichtung über ihre gesamte Einsatzdauer bestmöglich zu nutzen, d.h. einen Walzbetrieb ohne Unterbrechungen und ohne Verlust an Produktionsmenge aufrecht zu erhalten und dennoch für das zu walzende Band unter möglichst hoher Energieeinsparung optimale Temperaturverhältnisse zu erzielen. Weiters sollen Temperaturunterschiede zwischen den Bandenden sowie den Bandkanten und Bandmittelstücken so gering gehalten werden, daß sie weder für das Walzverfahren, für die Walzeinrichtungen, noch für die Qualität des Bandes nachteilige Auswirkungen haben.The invention aims at avoiding these disadvantages and difficulties and presents itself the task, a method of the type described above and a device for To carry out the process, which make it possible, in combination with the Production of a strip in a continuous caster on the one hand the reversing roller device to make the best possible use over their entire service life, i.e. a rolling mill without Maintain interruptions and without loss of production volume and yet optimal for the strip to be rolled while saving as much energy as possible To achieve temperature conditions. Furthermore, temperature differences between the Tape ends and the tape edges and tape center pieces are kept so low that they neither for the rolling process, for the rolling devices, nor for the quality of the strip have adverse effects.
Diese Aufgabe wird erfindungsgemäß bei einem Verfahren der eingangs beschriebenen Art dadurch gelöst, daß zwei oder mehrere Bänder abwechselnd gewalzt werden und während des Walzens eines der Bänder in mindestens einem Walzstich das andere Band oder die anderen Bänder in zu einem Bund gewickelter Warteposition verharren.This object is achieved according to the invention in a method of the type described in the introduction solved in that two or more strips are alternately rolled and during the Rolling one of the strips in at least one roll pass the other strip or the others The tapes remain in a waiting position wound into a bundle.
Das erfindungsgemäße Verfahren ermöglicht zudem, geringere Enddicken zu erreichen, u.zw. ohne zusätzlichen Energieaufwand. Weiters ist eine Verbesserung der geometrischen Produkttoleranzen (Profil, Dicke, Planheit) in einfacher Weise und ohne großen Zusatzaufwand möglich. Durch den Temperaturausgleich werden zusätzlich die Walzkrafterhöhung beim Einstechen der Bandenden in das Walzgerüst minimiert und die Walzenlagerungen geringer belastet.The method according to the invention also enables lower final thicknesses to be achieved, e.g. without additional energy expenditure. Furthermore, there is an improvement in the geometric Product tolerances (profile, thickness, flatness) in a simple manner and without great Additional effort possible. The temperature compensation also means that The increase in the rolling force when the strip ends are inserted into the roll stand is minimized and the Roller bearings less stressed.
Aus der JP-A 56-59507 ist es bekannt, Elektroblech kaltzuwalzen, wodurch die magnetischen Eigenschaften eingestellt werden sollen. Insbesondere soll ein Alterungsprozeß mehrmals hintereinander zwischen den einzelnen Walzschritten stattfinden. Zu diesem Zweck wird Bandmaterial reversiergewalzt, wobei zwei Bänder abwechselnd reversiergewalzt werden, u.zw. in der Art und Weise, daß während des Walzens des einen Bandes das weitere Band zum Zweck des Altems in gewickelter Warteposition verharrt.From JP-A 56-59507 it is known to cold-roll electrical sheet, whereby the magnetic Properties to be set. In particular, an aging process should be repeated several times take place in succession between the individual rolling steps. For this purpose Strip material is reversely rolled, two strips being alternately reversed rolled, etc. in such a way that, during the rolling of one strip, the other strip remains in a wrapped waiting position for the purpose of the Altems.
Zweckmäßig wird erfindungsgemäß für das Band bzw. die Bänder in zu einem Bund gewickelter Warteposition ein Wärmeausgleich durchgeführt, u.zw. einschließlich des Bandendes bzw. der Bandenden.According to the invention, it is expedient for the band or bands to form a bundle a heat compensation carried out, e.g. including the Band end or the band ends.
Das erfindungsgemäße Verfahren ermöglicht es, nicht nur optimale Temperaturverhältnisse für das Walzen einzustellen, sondern es kann auch dafür herangezogen werden, die Materialeigenschaften des Bandes vor oder nach einer Stichabnahme zu verbessern, d.h. durch eine spezifische Temperatureinwirkung, beispielsweise in Abhängigkeit von der Dicke und Qualität des Walzgutes, physikalische Eigenschaften des Bandes bzw. Gefügestrukturen des Bandes zu verbessern, u.zw. dadurch, daß für das Band bzw. die Bänder in zu einem Bund gewickelter Warteposition eine Wärmebehandlung, insbesondere eine Aufheizung, durchgeführt wird, u.zw. einschließlich des Bandendes bzw. der Bandenden. Hierdurch gelingt es weiters, das Band auf eine optimale Walztemperatur zu bringen; bei der Walzung verlorene Wärmeenergie wird dem Band wieder zugeführt. The method according to the invention enables not only optimal temperature conditions adjust for rolling, but it can also be used for that To improve the material properties of the tape before or after a stitch acceptance, i.e. by a specific temperature effect, for example depending on the thickness and Quality of the rolled stock, physical properties of the strip or structure of the Band to improve, etc. in that for the tape or tapes in a bundle wound waiting position a heat treatment, in particular heating, is carried out, etc. including the tape end or the tape ends. Hereby it also succeeds in bringing the strip to an optimal rolling temperature; during rolling lost thermal energy is returned to the belt.
Eine Einrichtung zur Durchführung des erfindungsgemäßen Verfahrens mit einer Stranggießanlage, gegebenenfalls einem Vorwalzgerüst, und mit einer nachgeordneten Band-Walzanlage mit mindestens einem Reversierwalzgerüst und einer Wickelvorrichtung ist gekennzeichnet durch mindestens drei Wickelvorrichtungen, von denen mindestens zwei an einer Zulaufseite des Reversierwalzgerüstes und mindestens eine an der anderen Zulaufseite des Reversierwalzgerüstes vorgesehen sind.A device for performing the method according to the invention with a Continuous caster, possibly with a roughing stand, and with a downstream strip mill with at least one reversing roll stand and one winding device characterized by at least three winding devices, at least two of which one inlet side of the reversing roll stand and at least one on the other inlet side of the reversing roll stand are provided.
Gemäß einer bevorzugten Ausführungsform sind an jeder Zulaufseite des Reversierwalzgerüstes jeweils zwei Wickelvorrichtungen vorgesehen.According to a preferred embodiment, the Reversing roll stand provided two winding devices.
Vorteilhaft sind die Wickelvorrichtungen mit einem Wärmeisoliermantel ausgestattet. Sie könnten jedoch auch in einem beheizten Raum aufgestellt sein.The winding devices are advantageously equipped with a heat insulation jacket. she could also be set up in a heated room.
Zweckmäßig sind die Wickelvorrichtungen als Haspelöfen ausgebildet und vorzugsweise mit einer Heizeinrichtung ausgestattet.The winding devices are expediently designed as reel furnaces and preferably with a heating device.
Zur Energieeinsparung sind vorteilhaft zwei Wickelvorrichtungen gemeinsam von einem Isoliermantel umgeben.To save energy, two winding devices are advantageously combined by one Insulated jacket.
Um die Bandenden auch komplett aufwickeln zu können, ist zweckmäßig die Wickelvorrichtung mit einer das Bandende auf- und abwickelnden Einrichtung versehen.In order to be able to wind up the tape ends completely, it is advisable Provide the winding device with a device that winds up and unwinds the end of the tape.
Eine andere bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß die Wickelvorrichtung mit einer isolierten, gegebenenfalls beheizbaren, weitgehend geschlossenen Einlauf- bzw. Auslaufzone versehen ist.Another preferred embodiment is characterized in that the Winding device with an insulated, possibly heatable, largely closed inlet or outlet zone is provided.
Vorteilhaft ist mindestens eine Wickelvorrichtung mit einer Schutzgaseinrichtung ausgestattet.At least one winding device with a protective gas device is advantageous fitted.
Die Erfindung ist nachstehend anhand der Zeichnung an mehreren Ausführungsbeispielen näher erläutert, wobei Fig. 1 eine schematisch dargestellte Anordnung einer Wickelvorrichtung in Seitenansicht wiedergibt. Die Fig. 2 und 3 zeigen in zu Fig. 1 analoger Darstellung weitere Ausführungsformen. In den Fig. 4 bis 6 ist die erfindungsgemässe Anordnung einer Wickelvorrichtung jeweils in einem Verbund mit einer Stranggießanlage dargestellt.The invention is based on the drawing of several embodiments explained in more detail, wherein Fig. 1 is a schematically illustrated arrangement of a Playing winding device in side view. 2 and 3 show in to Fig. 1 analog representation of other embodiments. 4 to 6 is the arrangement according to the invention a winding device each shown in a network with a continuous caster.
Fig. 1 zeigt eine Gesamtanordnung einer Einrichtung zur Durchführung einer
Reversierwalzung mit einem Reversierwalzgerüst 1, das entweder als Vorgerüst oder als
Fertiggerüst (Steckel-Gerüst) ausgebildet sein kann. An einer Seite 2 des
Reversierwalzgerüstes 1 sind zwei als Haspelöfen 3 und 3' ausgebildete Wickelvorrichtungen
angeordnet. An der anderen Seite 4 des Reversierwalzgerüstes 1 ist nur eine einzige
Wickelvorrichtung 3", die ebenfalls als Haspelofen ausgebildet ist, vorgesehen.
Selbstverständlich kann anstelle des einzigen, zwischen den Haspelöfen 3 bis 3" angeordneten
Reversierwalzgerüstes 1 auch ein Mehrfachgerüst, bei dem das Band 9 bzw. 9' bei einem
Durchgang zwei oder mehrere Stichabnahmen erfährt, vorgesehen sein. Fig. 1 shows an overall arrangement of a device for performing a
Reverse rolling with a
Die Haspelöfen 3 bis 3" sind mit antreibbaren Haspeldornen 5 ausgestattet und jeweils mit
einem wärmeisolierten Mantel 6 ausgestattet. Sie weisen gegebenenfalls Heizeinrichtungen 7
auf, um ein bestimmtes Temperaturniveau im Innenraum 8, 8' jedes Haspelofens 3 bis 3" zu
halten.The
Vorzugsweise sind die Haspelöfen 3 bis 3" derart ausgebildet, daß die Bandenden des zu
walzenden Bandes 9, 9' komplett in den Innenraum 8 der Haspelöfen 3 bis 3" eingezogen
werden können. Zu diesem Zweck weisen die Haspelöfen 3 bis 3" entsprechende Einrichtungen
auf, wie Antriebsrollen 10, die das Bandende erfassen können und aus dem jeweiligen
Haspelofen 3 bis 3" herausziehen können, sowie sogenannte Bundöffner 11, das sind
keilförmige, an den aufgewickelten Bund 12 anstellbare Einrichtungen - auch
Bundöffnungsschwerter genannt -, die es gestatten, das Bandende vom Bund 12 zu lösen und
aus dem Innenraum 8 jedes Haspelofens 3 bis 3" herauszuführen. Zum Anstellen eines
Bundöffners 11 an die Bundoberfläche eines auf einem Haspeldorn 5 gewickelten Bundes 12
dienen nicht näher dargestellte Stelleinrichtungen.Preferably, the
Sollte das vollständige Aufwickeln eines Bandes einschließlich seines Bandendes nur schwierig durchführbar sein, kann ein Haspelofen 3 bis 3" auch mit einer isolierten, eventuell beheizbaren Ein- bzw. Auslaufzone versehen sein, die gegebenenfalls schwenkbar ausgebildet ist, um das Band und die Ein- bzw. Auslaufzone aus dem Rollgangsbereich zu bringen.Completely winding a tape including its tape end should be difficult feasible, a 3 to 3 "coiler can also be used with an insulated, possibly heatable Entry or exit zone may be provided, which is optionally pivotable to the Bring the belt and the entry and exit zones out of the roller table area.
Vorteilhaft sind die Innenräume 8 der Haspelöfen 3 bis 3" mittels nicht näher dargestellter
Schutzgaseinrichtungen unter Schutzgasatmosphäre setzbar, so daß Verzunderungen der
Bänder 9, 9' hintangehalten werden können.The
Mit der erfindungsgemäßen Einrichtung können abwechselnd zwei Bänder 9, 9' gewalzt
werden. Während das eine Band 9 gewalzt wird, ist das andere Band 9' in dem zweiten der
beiden an der Seite 2 des Reversierwalzgerüstes 1 benachbart angeordneten Haspelöfen 3, 3' in
zu einem Bund 12 aufgewickelter Warteposition. Während das Band 9' hier verharrt, bis es
zum Walzen eingesetzt wird, d.h. das andere Band 9 in zwei oder mehreren Walzstichen
gewalzt wird, kann ein Temperaturausgleich bzw. eine Wärmebehandlung, eventuell sogar
unter Schutzgasatmosphäre, durchgeführt werden. Wenn dann das zweite Band 9' gewalzt
wird, befindet sich das erste gewalzte Band 9 in zu einem Bund aufgewickelter Warteposition
und kann seinerseits einem Temperaturausgleich für nachfolgende Walzstiche unterworfen
werden. With the device according to the invention, two
Gemäß den in den Fig. 2 und 3 dargestellten Ausführungsformen sind zwei Haspeldorne 5
benachbart angeordnet und von einem gemeinsamen Wärmeschutzgehäuse 6 umgeben.
Gemäß Fig. 2 sind die Haspeldorne 5 in horizontal benachbarter Anordnung und gemäß Fig. 3
in vertikal benachbarter Anordnung angeordnet.According to the embodiments shown in FIGS. 2 and 3, two
In den Fig. 4, 5 und 6 sind verschiedene Varianten von Stranggießanlagen in Kombination mit einem Reversierwalzgerät schematisch dargestellt.4, 5 and 6 are different variants of continuous casting plants in combination with a reversing rolling device shown schematically.
Gemäß Fig. 4 ist einer Stranggießanlage 13 mit einer Kokille 14, einer Rollenführungsbahn
15 und einer dieser nachgeordneten Trenneinrichtung 16 ein Temperatur-Ausgleichsofen 17
zur Aufnahme von vom Strang abgetrennten Bändern nachgeordnet. Ist der Strang 18, wie er
aus der Kokille 14 austritt, nicht dünn genug, um im durcherstarrten Zustand gewickelt
werden zu können, ist in der Stranggießanlage noch ein nicht näher dargestelltes
Vorwalzgerüst zur Walzung eines wickelbaren Stranges 18 vorgesehen. Direkt in der Linie
der Stranggießanlage 13 sind als Haspelöfen ausgebildete Wickelvorrichtungen 3 bis 3"' und
dazwischen liegend ein Reversierwalzgerüst 1 angeordnet. Gemäß dem in Fig. 4 dargestellten
Ausführungsbeispiel sind also auf jeder Seite 2 bzw. 4 des Reversierwalzgerüstes 1 jeweils
zwei Haspelöfen 3, 3' und 3", 3"' vorgesehen. Es könnten auch mehr sein oder auch nur auf
einer der beiden Seiten 2 und 4 des Reversierwalzgerüstes 1 ein einziger Haspelofen.4 is a
Die Funktion ist folgende: Zunächst wird ein vom Strang 18 abgetrenntes Band 9' in den
Temperatur-Ausgleichsofen 17 direkt eingefördert, u.zw. mit einer die
Stranggießgeschwindigkeit wesentlich übersteigenden Abzugsgeschwindigkeit. Nach einem
Temperaturausgleich wird das Band 9' gemäß dem erfindungsgemäßen Verfahren
abwechselnd mit einem zweiten, zuvor vom Strang 18 abgetrennten Band 9 gewalzt.The function is as follows: First, a band 9 'separated from the
Durch das erfindungsgemäße Verfahren ist es möglich - wie in Fig. 5 dargestellt -, auf den
Temperatur-Ausgleichsofen 17 zu verzichten, es kann nämlich der in Strangförderrichtung
erstangeordnete Haspelofen 3 diese Funktion übernehmen, ohne daß das erfindungsgemäße
Verfahren zum Reversierwalzen gestört ist. In diesem Fall sind auf jeder Seite 2 und 4 des
Reversierwalzgerüstes jeweils mindestens zwei Haspelöfen 3, 3' und 3", 3"' angeordnet.The method according to the invention makes it possible - as shown in FIG
To waive
Fig. 6 zeigt eine Sonderbauform eines in Strangauslaufrichtung erstgeordneten Haspelofens 3,
der eine eigene Bandeinlauföffnung 19 und eine eigene Bandaustrittsöffnung 20, ähnlich wie
in Fig. 3 dargestellt, aufweist. Der Haspeldorn 21 (es sind hier zwei Haspeldorne 21
symmetrisch
zur Symmetrieachse vorgesehen) dieses Haspelofens 3 ist mittels einer Stelleinrichtung in eine
Aufwickelanfangsposition I an der Bandeinlauföffnung 19 zwecks Erfassens des Bandanfanges
sowie in eine Abwickelposition II, in der ein auf dem Haspeldorn 21 gewickelter Bund 12
gegen eine ortsfest am Haspelofen 3 angeordnete bzw. anzudrückende Andrückrolle 22
gepreßt ist, bewegbar, wobei die Andrückrolle 22 in Abwickelrichtung der
Bandaustrittsöffnung 20 vorgelagert ist. Ein Haspelofen dieser Art ist in der österreichischen
Patentanmeldung A 647/95 näher beschrieben6 shows a special design of a
Die Erfindung beschränkt sich nicht auf die dargestellten Ausführungsbeispiele, sondern sie
kann in verschiedener Hinsicht modifiziert werden. Beispielsweise können bei einer Einrichtung
gemäß Fig. 1 auf der Seite 4 des Reversierwalzgerüstes 1 ebenfalls zwei Haspelöfen
angeordnet sein, wodurch sich die Möglichkeit ergibt, ein Band 9 bzw. 9' auch nach einer
ungeraden Anzahl von Walzstichen einem Temperaturausgleich bzw. einer Wärmebehandlung
zu unterziehen. Sollen mehr als zwei Bänder abwechselnd gewalzt werden, ist eine
entsprechende Anzahl von Haspelöfen vorzusehen.The invention is not limited to the exemplary embodiments shown, but rather
can be modified in several ways. For example, at a
Anhand des nachstehenden Beispieles eines Walzplanes ist zu ersehen, welche Zeit für ein
Band 9 bzw. 9' für eine Wärmebehandlung bei zwei abwechselnd gewalzten Bändern 9, 9' bei
einer Einrichtung nach Fig. 1 zur Verfügung steht. Das Walzen jedes Bandes 9, 9' erfolgt in
jeweils sieben Stichen mit einem Temperaturausgleich bzw. einer Haltezeit, der bzw. die sich
über jeweils zwei Stichzeiten erstreckt.The following example of a rolling schedule shows what time for a
9' (Stich i): Position von Band 9' nach Stich Nr. iPosition of
9 '(stitch i): position of volume 9' after stitch no. I
Claims (11)
- A process for the production of a hot-reverse-rolled strip (9, 9'), in particular a steel strip, wherein a strip is produced either directly by continuous casting or by continuous casting plus a subsequent roughing operation, the strip (9, 9') is subsequently hot-rolled in several rolling passes and after each rolling pass is wound into a coil (12), characterized in that two or several strips (9, 9') are rolled alternately and during the rolling of one of the strips (9) in at least one rolling pass the other strip (9') or the other strips remain in a waiting position wound into a coil (12).
- A process according to claim 1, characterized in that a heat equalization is carried out for the strip (9') or the strips, namely including the strip end or the strip ends, while the strip(s) is (are) in a waiting position in the form of a coil (12).
- A process according to claim 1 or 2, characterized in that a heat treatment, in particular heating, is carried out for the strip (9') or the strips, namely including the strip end or the strip ends, while the strip(s) is (are) in a waiting position in the form of a coil (12).
- A device for carrying out the process according to one or several of claims 1 to 3, comprising a continuous casting plant (13), optionally a roughing stand, and comprising a strip rolling plant that is arranged subsequently and has at least one reversing stand (1) and coiling means (3), characterized by at least three coiling means (3), of which at least two are provided on an entry side (2) of the reversing stand (1) and at least one, on the other entry side (4) of the reversing stand (1).
- A device according to claim 4, characterized in that two coiling means (3) are provided on each entry side (2, 4) of the reversing stand (1).
- A device according to claim 4 or 5, characterized in that the coiling means (3) are provided with a heat-insulating jacket (6).
- A device according to claim 6, characterized in that the coiling means are configured as coiler furnaces (3) and preferably are provided with a heating means (11).
- A device according to claim 6 or 7, characterized in that two coiling means (3) are jointly surrounded by an insulating jacket (6) (Figs. 2, 3).
- A device according to one or several of claims 4 to 8, characterized in that the coiling means (3) is provided with a device (10, 11) for coiling and uncoiling the strip end.
- A device according to one or several of claims 4 to 8, characterized in that the coiling means (3) is provided with an insulated, optionally heatable, largely closed inlet or outlet zone.
- A device according to one or several of claims 4 to 10, characterized in that at least one coiling means (3) is provided with a protective gas means.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0017996A AT405028B (en) | 1996-01-31 | 1996-01-31 | METHOD FOR REVERSING ROLLING A STRIP AND DEVICE FOR CARRYING OUT THE METHOD |
| AT17996 | 1996-01-31 | ||
| AT179/96 | 1996-01-31 | ||
| PCT/AT1997/000014 WO1997027952A1 (en) | 1996-01-31 | 1997-01-28 | Process and device for reverse rolling metal strips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0879100A1 EP0879100A1 (en) | 1998-11-25 |
| EP0879100B1 true EP0879100B1 (en) | 2001-10-17 |
Family
ID=3483619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97900893A Expired - Lifetime EP0879100B1 (en) | 1996-01-31 | 1997-01-28 | Process and device for reverse rolling metal strips |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6134934A (en) |
| EP (1) | EP0879100B1 (en) |
| JP (1) | JP2000504276A (en) |
| KR (1) | KR19990082153A (en) |
| AT (1) | AT405028B (en) |
| DE (1) | DE59704961D1 (en) |
| WO (1) | WO1997027952A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10357622A1 (en) * | 2003-12-10 | 2005-07-07 | Sms Demag Ag | Process and plant for rolling rolling stock |
| DE102008003222A1 (en) * | 2007-09-13 | 2009-03-19 | Sms Demag Ag | Compact flexible CSP system for continuous, semi-continuous and batch operation |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE177747C (en) * | ||||
| US2658741A (en) * | 1949-04-11 | 1953-11-10 | Westfalenhutte Dortmund Ag | Rolling mill for rolling strips or bands and sheets of steel and nonferrous metals |
| AT177747B (en) * | 1949-05-20 | 1954-02-25 | Westfalenhuette Dortmund Ag | Rolling mill with switched on winding furnaces |
| DE1158024B (en) * | 1960-03-24 | 1963-11-28 | Verwaltungsgesellschaft Moelle | Hot plate rolling mill |
| SU537718A1 (en) * | 1975-06-13 | 1976-12-05 | Device for hot rolling metal strip | |
| DE2600784C3 (en) * | 1976-01-10 | 1978-11-09 | Hoesch Werke Ag, 4600 Dortmund | Process for rolling hot strip and hot strip mill for carrying out the process |
| CA1095751A (en) * | 1978-10-03 | 1981-02-17 | George W. Tippins | Plate mill method and apparatus |
| JPS5659507A (en) * | 1979-10-22 | 1981-05-23 | Nippon Steel Corp | Cold rolling method for one-way electrical sheet |
| AT370777B (en) * | 1981-08-24 | 1983-05-10 | Voest Alpine Ag | REEL STOVE |
| US4522050A (en) * | 1983-01-14 | 1985-06-11 | Tippins Machinery Company, Inc. | Three stand mini mill method and apparatus |
| JPS6289502A (en) * | 1985-10-12 | 1987-04-24 | Sumitomo Metal Ind Ltd | Production of steel sheet by continuous casting of thin ingot |
| JPS62248503A (en) * | 1986-04-23 | 1987-10-29 | Hitachi Ltd | Pack rolling method |
| JP2502630B2 (en) * | 1987-11-02 | 1996-05-29 | 株式会社日立製作所 | Steel mill rolling equipment |
| JPH01127105A (en) * | 1987-11-12 | 1989-05-19 | Sumitomo Heavy Ind Ltd | Reversible rolling mill for hot continuous finishing |
| DE3743057C1 (en) * | 1987-12-18 | 1988-09-01 | Krupp Gmbh | Process and plant for producing hot-rolled strip from continuously cast starting material |
| DE3816469A1 (en) * | 1988-05-13 | 1989-11-23 | Schloemann Siemag Ag | Multi-strand continuous casting installation with a downstream continuous rolling mill |
| JP2602291B2 (en) * | 1988-07-29 | 1997-04-23 | 株式会社日立製作所 | Hot rolling equipment and rolling method |
| AT407123B (en) * | 1993-03-05 | 2000-12-27 | Voest Alpine Ind Anlagen | REEL OVEN FOR A HOT BAND |
| AT403169B (en) * | 1995-04-13 | 1997-11-25 | Voest Alpine Ind Anlagen | REEL OVEN FOR A HOT BAND |
-
1996
- 1996-01-30 US US09/117,511 patent/US6134934A/en not_active Expired - Fee Related
- 1996-01-31 AT AT0017996A patent/AT405028B/en not_active IP Right Cessation
-
1997
- 1997-01-28 WO PCT/AT1997/000014 patent/WO1997027952A1/en not_active Application Discontinuation
- 1997-01-28 JP JP9527171A patent/JP2000504276A/en active Pending
- 1997-01-28 EP EP97900893A patent/EP0879100B1/en not_active Expired - Lifetime
- 1997-01-28 DE DE59704961T patent/DE59704961D1/en not_active Expired - Fee Related
- 1997-01-28 KR KR19980705876A patent/KR19990082153A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ATA17996A (en) | 1998-09-15 |
| EP0879100A1 (en) | 1998-11-25 |
| AT405028B (en) | 1999-04-26 |
| US6134934A (en) | 2000-10-24 |
| JP2000504276A (en) | 2000-04-11 |
| WO1997027952A1 (en) | 1997-08-07 |
| KR19990082153A (en) | 1999-11-15 |
| DE59704961D1 (en) | 2001-11-22 |
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