EP2943296B1 - Casting/rolling installation and method for dismantling and installing rolls in a reducing stand of the casting/rolling installation - Google Patents

Casting/rolling installation and method for dismantling and installing rolls in a reducing stand of the casting/rolling installation Download PDF

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Publication number
EP2943296B1
EP2943296B1 EP14701298.3A EP14701298A EP2943296B1 EP 2943296 B1 EP2943296 B1 EP 2943296B1 EP 14701298 A EP14701298 A EP 14701298A EP 2943296 B1 EP2943296 B1 EP 2943296B1
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EP
European Patent Office
Prior art keywords
casting
turntable
crane
bay
backing roll
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.)
Not-in-force
Application number
EP14701298.3A
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German (de)
French (fr)
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EP2943296A1 (en
Inventor
Eberhard Witschas
Jürgen HEPPELMANN
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SMS Group GmbH
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SMS Group GmbH
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Publication date
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Publication of EP2943296A1 publication Critical patent/EP2943296A1/en
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Publication of EP2943296B1 publication Critical patent/EP2943296B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/147—Multi-strand plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D47/00—Casting plants
    • 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
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components

Definitions

  • the invention relates to a casting-rolling plant for producing hot strip according to the preamble of patent claim 1, as it is known from among others WO 93/00179 A1 is known. Moreover, the invention relates to methods for removing and installing rollers in a Reduziergerüst the casting-rolling mill.
  • Casting mills for casting and rolling metal strip are basically known in the art.
  • a known type of such a casting-rolling plant is, for example, a so-called compact strip production plant. This known type of plant is in FIG. 4 and is described schematically below. Other types of plant are conceivable which the example is not to be understood as limiting.
  • FIG. 4 shows a single-strand caster rolling plant 100. It provides that liquid metal, typically liquid steel, is transported in a tundish 180 by means of a casting hall crane 190 to a distributor device 120, typically a so-called distributor trough. From the distribution device 120, the liquid steel is passed into a first mold 112-1, where it solidifies at the cooled edges of the mold into a strand shell. At the outlet of the mold 112-1, the still liquid cast strand is fed to a subsequent strand guide 114-1 which deflects the casting strand exiting vertically from the mold 112-1 into the horizontal. During its guidance within the strand guide 114-1, the cast strand is further cooled until its solidification.
  • liquid metal typically liquid steel
  • the casting strand 210-1 passes through a first reducing stand 116-1 for rolling and reducing the thickness of the cast strand.
  • the cast strand then continues to pass through a pair of scissors 192 to be cut into slabs 220-1.
  • the shear 192 is typically associated with a scrap bucket 193 for removal of metal scrap generated during cutting of the casting strand.
  • the pair of scissors is still typically one Tunnel kiln 194 arranged downstream to maintain the temperature of the slabs or to slightly increase the temperature of the slabs to a rolling temperature of the slabs required by the subsequent finishing train 195.
  • the slabs are rolled out to hot strip 230-1.
  • the finishing train 195 is typically followed by a cooling line 196 and a coiler 197; the latter for winding up the cooled hot strip.
  • FIG. 4 described single-strand plant are also known multi-strand plants, where several of the in FIG. 4 shown strands parallel to each other.
  • Casting-rolling plant described uses the heat of the casting heat, so that reheating of the slabs in the tunnel kiln 194 is required only to a significantly reduced extent compared to the supply of previously cooled slabs.
  • the casting strand 210-1 For metallurgical reasons, it is favorable to achieve a degree of deformation of the casting strand 210-1 at the exit of the strand guide to the hot strip, as it is wound on the coiler 197, of at least 60 to 80%. This results in the production of thicker hot strip to slab thicknesses between 40 and 120 mm.
  • the casting platform is typically as in FIG. 4 shown, arranged as a horizontal working platform at the level of the mold 112-1. Operating teams have to work on the casting platform to carry out, in particular, maintenance work on the distributor device 120, and tools and consumables are also stored on the casting platform. For safety reasons, the casting platform is designed as a closed but well walkable workspace. The operation of the entire casting plant is done by a person in a control station 198, which, such as in FIG. 4 shown, is arranged above the casting floor.
  • the operating crews on the casting platform and the operating crews below the casting platform in the region of the runout of the strand guide typically can have neither eye nor voice contact, so that parallel work can possibly lead to dangerous situations.
  • the track spurs on the station make it possible to park individual rolls or a complete set of rolls after moving out of a roll stand on a track spur and immediately drive in a second set without crane installation in the scaffolding.
  • the same, for example, hydraulically operated device is also suitable to bring new rolls in juxtaposition with the rolling stand and then push the rollers into the framework and vice versa to pull out worn rollers out of the framework again.
  • the invention has the object, a known casting-rolling mill and known methods for installing and removing rollers in the rolling stands of these systems to the effect that the investment costs for a roll changing device for changing the rolls are reduced, but Nevertheless, a roll change can be performed easily and reliable especially in a downstream of the strand guide Reduziergerüst.
  • This object is achieved by the subject matter of the new patent claim 1.
  • This object is characterized in a casting rolling mill with a first casting line and a parallel second casting line, characterized in that the first and the second Reduziergerüst are installed so that their operating pages are each in the space between the two casting lines and that the roll changing device in Formed a turntable and is arranged in the space between the two casting lines at the height between the two Reduziergerüsten.
  • the claimed turntable between the first and the second casting line has the advantage that with its installation only one roll changing device is required to change the rolls of the reducing stands of both casting lines. It is therefore not necessary to provide separate roll changing devices for their respective rolling stands, in particular reducing stands, for each of the two casting lines. This saves investment costs. A roll change can be carried out simply and reliably with the help of the turntable; In particular, such a roll change does not affect the work on the casting platform.
  • operating side of a roll stand refers to that side of the roll stand, transversely to the rolling direction, on which in particular the roll changes are performed.
  • the opposite side of the rolling stand is referred to as the "drive side”; on this page are typically the drives for the rollers, i. H. Motors, gears and spindles arranged, which is why these drive sides are typically hardly accessible and are not suitable in particular for a roll change.
  • back-up roll means in the present description in addition to the actual back-up rolls also any intermediate rolls in the case of six-high scaffolds.
  • further rolls used here also means in particular the actual backing rolls or intermediate rolls.
  • the casting and rolling plant according to the invention comprises a casting hall in which, among other things, the molds, the strand guides and the Reduziergerüste the two casting lines and a G manhallenkran are arranged and adjacent to the casting hall in the casting direction of the casting hall adjacent hall, which also has a Crane has.
  • the neighboring hall may be a kiln hall or a roller hutch.
  • the turntable between the two casting lines basically three variants are possible.
  • a first variant of the turntable can be placed between the two casting lines such that at least a portion of the turntable for the G confusehallenkran or the crane of the neighboring hall is accessible.
  • the turntable completely, z. B. covered by the casting platform or be covered, so that neither the G discernhallenkran nor the crane of the neighboring hall can access the turntable.
  • the intermediate storage station is not roofed, in particular not from the casting platform, but it is accessible due to their arrangement in the neighboring hall for the crane of the neighboring hall. Specifically, the crane of the neighboring hall then serves to deliver new rolls and to remove worn rolls to and from the intermediate storage station.
  • a combination of the two first-mentioned variants is possible, according to which a portion of the turntable is accessible either for the G stealhallenkran or for the crane in the neighboring hall and in addition beyond the Eisenablagestation for the crane in the neighboring hall is accessible.
  • the turntable is provided in stationary so not translationally movable design; he has a fixed axis of rotation.
  • the first and the second reducer are each at the same height of the first and second casting line, so that their respective vertical center planes coincide.
  • the turntable is then preferably arranged between the two casting lines such that its stationary vertical axis of rotation lies in the coinciding central planes of the first and the second reducing stand. It is then possible a similar operation of the two Reduziergerüste in the two casting lines.
  • the radius of the turntable is advantageously designed so large that the turntable with its periphery to the first and the second Reduziergerüst, respectively at their operating pages, reaching.
  • This has the advantage that bridging between turntable and rolling stands is not required.
  • the first reducing stand is seen in the casting direction advantageously immediately behind the output of the first strand guide and the second Reduziergerüst is advantageously also arranged in the casting direction immediately behind the exit of the second strand guide. Due to this close arrangement of the Reduction stands at the outlet of the strand guide ensure that the casting heat of the casting strand is optimally utilized to reduce the thickness of the casting strand. In this respect, this arrangement is used to save energy.
  • a pulling and pushing device is provided, for. B. in the form of a roll changing locomotive or a hydraulic cylinder.
  • the pulling and pushing device is used to extend or pull out the rollers from the first and / or second Reduziergerüst on the turntable or for retraction or insertion of the rollers of the turntable in the first and / or second Reduziergerüst or for moving or moving the Rolling between the turntable and the intermediate storage station.
  • the turntable advantageously has an upper level with positions for receiving e.g. the work rolls and a lower level with positions for receiving further rolls, e.g. the back-up rolls, of at least one of the two reducing stands of the two casting lines.
  • This embodiment has the advantage that at the same time not only individual rolls, but entire sets of rolls may eventually find room on the turntable with a roll changing chair.
  • each of the two casting lines can have their own casting platform, wherein a space between the two casting platforms is also conceivable via the intermediate space between the two casting lines. In this gap, for example, the G manhallenkran could be retracted for access to at least portions of the turntable. It is possible that both casting platforms are combined in a common casting platform, which is then also extends transversely to the casting direction and spans both casting lines.
  • the casting lines are in each case designed as cast-rolling plants, such as, for example, as a compact strip production plant by way of introduction with reference to FIG FIG. 4 described.
  • FIG. 1 shows a longitudinal cross-section through the casting mill 100 according to the invention. It is a section of the previously described with reference to FIG. 4 described general casting-rolling mill, but supplemented with the turntable 130 according to the invention FIG. 1 to recognize a casting hall 138, which is followed by a neighboring hall 140 seen in the casting direction R.
  • the border between the two halls falls in FIG. 1 together with the outer edge of the first casting platform 118-1; this limit is in FIG. 1 designated by the reference numeral 139.
  • the distributor device 120 can be seen in the form of a movable distributor trough.
  • a first Reduziergerüst 116-1 is arranged downstream.
  • a device 145 for removing a cold leg is arranged downstream of the first reducing stand.
  • This cold-strand removal device 145 is according to FIG. 1 as well as the first strand guide 114-1 and the first reducer 116-1 below the first casting platform 118-1. All these devices are therefore not accessible to a casting hall crane, which is typically located above the casting floor.
  • a scissors 192 and a tunnel furnace 194. The scissors 192 is associated with a scrap bucket 193.
  • the roller changing device according to the invention in the form of the turntable 130 can be seen in longitudinal section. Its fixed axis of rotation 134 falls, as in FIG. 1 shown, preferably with the vertical center plane M1 of the first Reduziergerüstes 116-1 together. It can also be seen that the turntable is supported by a turntable bearing 129 on a foundation 126 and rotatably supported. The rotary movement of the turntable 130 about its vertical axis of rotation 134 is effected by means of a turntable drive 127. Locking devices or indexing devices 128 are provided in order to lock the turntable 130 in predetermined rotational positions.
  • FIG. 2 shows a plan view of the casting plant 100 according to the invention.
  • the first pouring line 110-1 and a second pouring line 110-2 arranged parallel thereto can be seen.
  • the casting lines are spaced apart by the distance d.
  • the casting direction R runs in FIG. 2 from right to left.
  • From the upper first pouring line 110-1 are shown schematically the first mold 112-1, the first strand guide 114-1, the first reducer 116-1, the first pair of shears 192-1 and the first tunnel kiln 194-1.
  • the incoming cast strand 210-1 is cut into slabs 220-1.
  • the parallel second casting line 110-2 is constructed analogously.
  • the turntable 130 according to the invention can be seen between the two casting lines.
  • the fixed axis of rotation 134 of the turntable 130 is located in the vertical center planes M1, M2 of the first and second Reduziergerüstes 116-1, 116-2, which coincide due to the symmetrical arrangement of the individual components of the casting lines.
  • the two center planes M1, M2 coincide because the first and the second reducer 116-1, 116-2 lie at the same height in the casting direction R.
  • the turntable 130 has different positions P1, P2, P3 for receiving the rolls of the first or second of the reducing stand 116-1, 116-2.
  • a pulling and pushing device 116 may be arranged, for. B.
  • FIG. 2 also designated by reference numeral 139. It can be seen that in the in FIG. 2 illustrated embodiment, a portion, more precisely a segment of the turntable always protrudes into the adjacent hall 140. This segment is in FIG. 2 designated by the reference numeral 132. Because this segment protrudes into the adjacent hall 140, it is accessible to the crane of the neighboring hall, so that these worn rolls of the segmental region of the turntable 130 z. B. can carry away in a roll workshop or can park new rolls from the roll shop in the segment area 132 on the turntable.
  • a pulling and pushing device 160 is recognizably placed on the turntable 130 and is mounted above the opening 136 on rails.
  • the insects 150 which adjoins the casting direction R, preferably at the periphery of the turntable.
  • the intermediate storage station 150 preferably has, in turn, radially aligned rail outlets 152 to which the rotary axle 134 of the turntable is mounted, on which the rollers of the two reducing stands 116 - 1, 116 - 2 can be temporarily stored.
  • the radial orientation of the rail runners to the pivot point 134 of the turntable has the advantage that the rollers from the turntable can be moved to the insectsablagestation and vice versa.
  • FIG. 3 shows by way of example a cross section through the casting plant 100 according to the invention at the level of the common center planes M1, M2 of a first and second four-roller Reduziergerüstes 116-1, 116-2.
  • the two reducers 116-1, 116-2 exemplarily have two work rolls 310, an upper backup roll 320-1, and a lower backup roll 320-2.
  • the turntable 130 according to the invention can be seen in cross section, on which exemplary sets of work rolls 310 are stored.
  • the said pulling and pushing device 160 can be seen.
  • a roll change more precisely an installation and removal of the exemplified working and support rolls in the Reduziergerüste 116-1, 116-2 takes place in the casting-rolling plant according to the invention just described according to the following methods:
  • Step 16c) and the subsequent steps are only performed after the two work rolls 310 have previously been removed from the reducing stand 116-1, 116-2.
  • back-up change-over chair was already placed on the turntable 130 at the third position P3 in the step 15a), it is raised before performing step 16c) and, after performing step 16c) in the step 16d), on the worn lower one Back-up roller lowered.
  • the order of the individual method steps can be basically arbitrary; it just has to be technologically meaningful. All pulling or pushing movements of the working or support rollers can be carried out with the aid of the pulling and pushing device.

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Description

Die Erfindung betrifft eine Gieß-Walzanlage zum Erzeugen von Warmband gemäß dem Oberbegriff des Patentanspruchs 1, wie sie unter anderem aus der WO 93/00179 A1 bekannt ist. Darüber hinaus betrifft die Erfindung Verfahren zum Aus- und Einbau von Walzen in ein Reduziergerüst der Gieß-Walzanlage.The invention relates to a casting-rolling plant for producing hot strip according to the preamble of patent claim 1, as it is known from among others WO 93/00179 A1 is known. Moreover, the invention relates to methods for removing and installing rollers in a Reduziergerüst the casting-rolling mill.

Gieß-Walzanlagen zum Gießen und Walzen von Metallband sind im Stand der Technik grundsätzlich bekannt. Ein bekannter Typ einer solchen Gieß-Walzanlage ist zum Beispiel eine sogenannte Compact Strip Produktion Anlage. Dieser bekannte Anlagentyp ist in Figur 4 dargestellt und wird nachfolgend schematisch beschrieben. Weitere Anlagentypen sind denkbar womit das Beispiel nicht einschränkend zu verstehen ist.Casting mills for casting and rolling metal strip are basically known in the art. A known type of such a casting-rolling plant is, for example, a so-called compact strip production plant. This known type of plant is in FIG. 4 and is described schematically below. Other types of plant are conceivable which the example is not to be understood as limiting.

Figur 4 zeigt eine Ein-Strang-Gieß-Walzanlage 100. Sie sieht vor, dass flüssiges Metall, typischerweise flüssiger Stahl, in einem Tundish 180 mit Hilfe eines Gießhallenkranes 190 zu einer Verteilereinrichtung 120, typischerweise einer sogenannten Verteilerrinne transportiert wird. Aus der Verteilereinrichtung 120 wird der flüssige Stahl in eine erste Kokille 112-1 geleitet, wo er an den gekühlten Rändern der Kokille zu einer Strangschale erstarrt. Am Ausgang der Kokille 112-1 wird der innen noch flüssige Gießstrang einer nachfolgenden Strangführung 114-1 zugeführt, welche den senkrecht aus der Kokille 112-1 austretende Gießstrang in die Horizontale umlenkt. Während seiner Führung innerhalb der Strangführung 114-1 wird der Gießstrang bis zu seiner Durcherstarrung weiter gekühlt. Nach seiner Durcherstarrung durchläuft der Gießstrang 210-1 ein erstes Reduziergerüst 116-1 zum Walzen und Dickenreduzieren des Gießstrangs. In Gießrichtung R gesehen durchläuft der Gießstrang dann weiterhin eine Schere 192, um von dieser in Brammen 220-1 zerteilt zu werden. Der Schere 192 ist typischerweise ein Schrottkübel 193 zugeordnet zum Abtransport von Metallabfällen, die beim Schneiden des Gießstrangs anfallen. Der Schere ist weiterhin typischerweise ein Tunnelofen 194 nachgeordnet zum Halten der Temperatur der Brammen oder zum leichten Erhöhen der Temperatur der Brammen auf eine von der nachfolgenden Fertigwalzstraße 195 benötigten Walztemperatur der Brammen. In der Fertigstraße werden die Brammen zu Warmband 230-1 ausgewalzt. Der Fertigwalzstraße 195 ist typischerweise eine Kühlstrecke 196 und eine Haspeleinrichtung 197 nachgeschaltet; letztere zum Aufwickeln des abgekühlten Warmbandes. FIG. 4 shows a single-strand caster rolling plant 100. It provides that liquid metal, typically liquid steel, is transported in a tundish 180 by means of a casting hall crane 190 to a distributor device 120, typically a so-called distributor trough. From the distribution device 120, the liquid steel is passed into a first mold 112-1, where it solidifies at the cooled edges of the mold into a strand shell. At the outlet of the mold 112-1, the still liquid cast strand is fed to a subsequent strand guide 114-1 which deflects the casting strand exiting vertically from the mold 112-1 into the horizontal. During its guidance within the strand guide 114-1, the cast strand is further cooled until its solidification. After its solidification, the casting strand 210-1 passes through a first reducing stand 116-1 for rolling and reducing the thickness of the cast strand. As seen in the casting direction R, the cast strand then continues to pass through a pair of scissors 192 to be cut into slabs 220-1. The shear 192 is typically associated with a scrap bucket 193 for removal of metal scrap generated during cutting of the casting strand. The pair of scissors is still typically one Tunnel kiln 194 arranged downstream to maintain the temperature of the slabs or to slightly increase the temperature of the slabs to a rolling temperature of the slabs required by the subsequent finishing train 195. In the finishing train, the slabs are rolled out to hot strip 230-1. The finishing train 195 is typically followed by a cooling line 196 and a coiler 197; the latter for winding up the cooled hot strip.

Neben der soeben unter Bezugnahme auf Figur 4 beschriebenen Ein-Strang-Anlage sind auch Mehr-Strang-Anlagen bekannt, bei denen mehrere der in Figur 4 gezeigten Stränge parallel zueinander verlaufen.Besides just referring to FIG. 4 described single-strand plant are also known multi-strand plants, where several of the in FIG. 4 shown strands parallel to each other.

Die soeben unter Bezugnahme auf Figur 4 beschriebene Gieß-Walz-Anlage nutzt die Wärme der Gießhitze aus, so dass eine Wiedererwärmung der Brammen in dem Tunnelofen 194 nur in deutlich reduziertem Maße erforderlich ist gegenüber der Zuführung von zuvor erkalteten Brammen.The just referring to FIG. 4 Casting-rolling plant described uses the heat of the casting heat, so that reheating of the slabs in the tunnel kiln 194 is required only to a significantly reduced extent compared to the supply of previously cooled slabs.

Aus metallurgischen Gründen ist es günstig, einen Umformgrad von dem Gießstrang 210-1 am Ausgang der Strangführung bis zum Warmband, wie es auf der Haspeleinrichtung 197 aufgewickelt wird, von mindestens 60 bis 80 % zu erreichen. Dies führt bei der Produktion von dickerem Warmband zu Brammendicken zwischen 40 und 120 mm. Bei dickeren Brammen bzw. dickerem Warmband ist es vorteilhaft, den Umformprozess in mehreren Stufen durchzuführen. Zu diesem Zwecke wird der Gießstrang bereits wenn er aus der Strangführung 114-1 austritt, in dem besagten ersten Reduziergerüst 116-1 einem ersten Umformschritt unterzogen und dabei auf eine Dicke gebracht, welche für die nachfolgende kompakte Fertigstraße 195 geeignet ist, um die Brammen dann auf die gewünschte Enddicke zu bringen.For metallurgical reasons, it is favorable to achieve a degree of deformation of the casting strand 210-1 at the exit of the strand guide to the hot strip, as it is wound on the coiler 197, of at least 60 to 80%. This results in the production of thicker hot strip to slab thicknesses between 40 and 120 mm. For thicker slabs or thicker hot strip, it is advantageous to carry out the forming process in several stages. For this purpose, as soon as it emerges from the strand guide 114-1, the cast strand is subjected to a first forming step in said first reducing stand 116-1 and thereby brought to a thickness which is suitable for the subsequent compact finishing train 195, then the slabs to bring to the desired final thickness.

Aus energetischer Sicht ist es sinnvoll, den ersten Umformschritt direkt nach dem Gießen durchzuführen. Um dies zu realisieren erfolgt die Installation des ersten Reduziergerüstes 116-1 direkt hinter den Ausgang der Strangführung 114-1 unter der Gießbühne 118-1 der Gieß-Walzanlage 100. Die Gießbühne ist typischerweise, wie in Figur 4 gezeigt, als horizontale Arbeitsplattform auf Höhe der Kokille 112-1 angeordnet. Auf der Gießbühne müssen Bedienmannschaften arbeiten, um insbesondere Wartungsarbeiten an der Verteilereinrichtung 120 durchführen, und außerdem sind auf der Gießbühne Werkzeuge und Verbrauchsmaterial gelagert. Aus Arbeitssicherheitsgründen ist die Gießbühne als abgeschlossener aber gut begehbarer Arbeitsbereich gestaltet. Die Bedienung der gesamten Gießanlage erfolgt durch eine Person in einem Steuerstand 198, welcher, wie beispielsweise in Figur 4 gezeigt, oberhalb der Gießbühne angeordnet ist.From an energetic point of view, it makes sense to carry out the first forming step directly after casting. To realize this, the installation of the first takes place Reduction stand 116-1 directly behind the exit of the strand guide 114-1 below the casting platform 118-1 of the casting mill 100. The casting platform is typically as in FIG. 4 shown, arranged as a horizontal working platform at the level of the mold 112-1. Operating teams have to work on the casting platform to carry out, in particular, maintenance work on the distributor device 120, and tools and consumables are also stored on the casting platform. For safety reasons, the casting platform is designed as a closed but well walkable workspace. The operation of the entire casting plant is done by a person in a control station 198, which, such as in FIG. 4 shown, is arranged above the casting floor.

Die soeben als energetisch vorteilhaft beschriebene Anordnung des ersten Reduziergerüstetes 116-1 unmittelbar hinter der Strangführung, aber unterhalb der Gießbühne 118-1 hat den Nachteil, dass das Reduziergerüst 116-1 nicht von dem über der Gießbühne 118-1 laufenden Gießhallenkran 190 bedient werden kann. Insbesondere kann der Gießhallenkran 190 deshalb nicht für einen Wechsel der Walzen 310, 320 des Reduziergerüstes 116-1 verwendet werden. Dies gilt auch deshalb, weil der Steuerstand 198, von dem aus der Gießhallenkran 190 bewegt wird, keine Einsicht in den Bereich des Reduziergerüstes 116-1 hat, weil ihm die Sicht darauf durch die Gießbühne 118 versperrt wird.The just described as energetically advantageous arrangement of the first Reduziergerüstetes 116-1 immediately behind the strand guide, but below the Casting 118-1 has the disadvantage that the Reduziergerüst 116-1 can not be operated by the over the casting platform 118-1 ongoing Gießhallenkran 190 , In particular, therefore, the casting hall crane 190 can not be used for changing the rollers 310, 320 of the reducing stand 116-1. This is also true because the control station 198, from which the casting hall crane 190 is moved, has no insight into the area of the Reduziergerüstes 116-1, because the view of it is obstructed by the casting platform 118.

Zu berücksichtigen ist weiterhin, dass die Bedienmannschaften auf der Gießbühne und die Bedienmannschaften unterhalb der Gießbühne im Bereich des Auslaufs der Strangführung typischerweise weder Blick- noch Sprachkontakt haben können, so dass parallel ausgeführte Arbeiten unter Umständen zu gefährlichen Situationen führen können.It should also be noted that the operating crews on the casting platform and the operating crews below the casting platform in the region of the runout of the strand guide typically can have neither eye nor voice contact, so that parallel work can possibly lead to dangerous situations.

Eine Möglichkeit, einen Walzenwechsel bei dem Reduziergerüst 116-1 unterhalb der Gießbühne 118 durchführen zu können, bestünde in der Anordnung eines separaten Kranes unterhalb der Gießbühne. Ein solcher Kran wäre jedoch zum einen mit hohen Investitionskosten verbunden und zum anderen dürfte die Bauhöhe der Anlage bzw. der Gießbühne nicht immer ausreichen, um den Kran dann sinnvoll betreiben zu können. Eine in diesen Fällen erforderliche nachträgliche Erhöhung der Gießbühne wäre ebenfalls mit erheblichen Kosten verbunden.One way to perform a roll change in the Reduziergerüst 116-1 below the casting platform 118, would be in the arrangement of a separate crane below the casting platform. However, such a crane would be for On the other hand, the overall height of the plant or the casting platform is not always sufficient to operate the crane in a meaningful way. A subsequent increase in the casting platform required in these cases would also be associated with considerable costs.

Im Stand der Technik sind verschiedenste Walzenwechseleinrichtungen bekannt zum Ausbau und Abtransport von abgenutzten Walzen aus einem Reduziergerüst und zum Herantransportieren und Einbauen von neuen Walzen in dieses. Unter anderem sind auch Walzenwechseleinrichtungen in Form von Drehtellern bekannt. Solche Drehteller sind konkret bekannt aus z. B. der deutschen Offenlegungsschrift DE 1 527 622 , der deutschen Patentschrift 851941 und der Patentschrift DE 693 224 , herausgegeben vom Deutschen Reichspatentamt. Die letztgenannte Patentschrift offenbart einen Drehteller, der mit Hilfe eines Antriebs in Drehung versetzt werden kann. Auf dem Drehteller ist ein Gleis zur Aufnahme von Walzensätzen angeordnet. An der Peripherie des Drehtellers ist typischerweise eine Zwischenablagestation für die Walzen angeordnet, welche sternförmig angeordnete Gleisausläufer für das Gleis auf dem Drehteller aufweist. Auf dem Drehteller befindet sich eine Vorrichtung zum Aufschieben bzw. Aufziehen eines Walzensatzes von der Zwischenablagestation auf den Drehteller und umgekehrt zum Abschieben eines Walzensatzes von dem Drehteller auf die Station. Die Gleisausläufer auf der Station gestatten es, einzelne Walzen oder einen kompletten Walzensatz nach dem Herausfahren aus einem Walzgerüst auf einem Gleisausläufer abzustellen und sofort wieder einen zweiten Satz ohne Krananlage in das Gerüst hineinzufahren. Dieselbe, beispielsweise hydraulisch betriebene Vorrichtung ist auch geeignet, neue Walzen in Gegenüberstellung mit dem Walzgerüst zu bringen und alsdann die Walzen in das Gerüst hineinzuschieben und umgekehrt abgenutzte Walzen aus dem Gerüst wieder herauszuziehen.In the prior art various roll changing devices are known for the removal and removal of worn rolls from a Reduziergerüst and for transporting and installing new rolls in this. Among other things, roll changing devices in the form of turntables are known. Such turntables are concretely known from z. B. the German patent application DE 1 527 622 , the German patent 851941 and the patent DE 693 224 , published by the German Reich Patent Office. The latter patent discloses a turntable which can be rotated by means of a drive. On the turntable a track for receiving sets of rollers is arranged. At the periphery of the turntable typically a Zwischenablagestation for the rollers is arranged, which has star-shaped track runners for the track on the turntable. On the turntable there is a device for pushing or pulling a set of rollers from the intermediate storage station on the turntable and vice versa for pushing a set of rollers from the turntable to the station. The track spurs on the station make it possible to park individual rolls or a complete set of rolls after moving out of a roll stand on a track spur and immediately drive in a second set without crane installation in the scaffolding. The same, for example, hydraulically operated device is also suitable to bring new rolls in juxtaposition with the rolling stand and then push the rollers into the framework and vice versa to pull out worn rollers out of the framework again.

Weiterhin offenbart die US-Patentschrift US 1,833,376 eine Walzenwechseleinrichtung in Form eines Drehtellers, welcher in bestimmten Drehstellungen gegen weiteres Verdrehen verriegelt werden kann.Furthermore, the US patent publication US 1,833,376 a roll changing device in the form of a turntable, which can be locked in certain rotational positions against further rotation.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine bekannte Gieß-Walzanlage sowie bekannte Verfahren zum Ein-und Ausbau von Walzen in den Walzgerüsten dieser Anlagen dahingehend weiterzubilden, dass die Investitionskosten für eine Walzenwechseleinrichtung zum Wechseln der Walzen reduziert werden, aber trotzdem ein Walzenwechsel insbesondere bei einem der Strangführung nachgeschalteten Reduziergerüst einfach und betriebssicher durchgeführt werden kann.Based on this prior art, the invention has the object, a known casting-rolling mill and known methods for installing and removing rollers in the rolling stands of these systems to the effect that the investment costs for a roll changing device for changing the rolls are reduced, but Nevertheless, a roll change can be performed easily and reliable especially in a downstream of the strand guide Reduziergerüst.

Diese Aufgabe wird durch den Gegenstand des neuen Patentanspruchs 1 gelöst. Dieser Gegenstand ist bei einer Gieß-Walzanlage mit einer ersten Gießlinie und einer parallel angeordneten zweiten Gießlinie dadurch gekennzeichnet, dass das erste und das zweite Reduziergerüst derart installiert sind, dass sich ihre Bedienseiten jeweils in dem Zwischenraum zwischen den beiden Gießlinien befinden und dass die Walzenwechseleinrichtung in Form eines Drehtellers ausgebildet und in dem Zwischenraum zwischen den beiden Gießlinien auf Höhe zwischen den beiden Reduziergerüsten angeordnet ist.This object is achieved by the subject matter of the new patent claim 1. This object is characterized in a casting rolling mill with a first casting line and a parallel second casting line, characterized in that the first and the second Reduziergerüst are installed so that their operating pages are each in the space between the two casting lines and that the roll changing device in Formed a turntable and is arranged in the space between the two casting lines at the height between the two Reduziergerüsten.

Der beanspruchte Drehteller zwischen der ersten und der zweiten Gießlinie hat den Vorteil, dass mit seiner Installation nur noch eine Walzenwechseleinrichtung zum Wechseln der Walzen der Reduziergerüste beider Gießlinien erforderlich ist. Es ist damit nicht erforderlich, für jede der beiden Gießlinien separate Walzenwechseleinrichtungen für ihre jeweiligen Walzgerüste, insbesondere Reduziergerüste vorzusehen. Dadurch werden Investitionskosten eingespart. Ein Walzenwechsel kann mit Hilfe des Drehtellers einfach und betriebssicher durchgeführt werden; insbesondere beeinflusst ein solcher Walzenwechsel nicht die Arbeiten auf der Gießbühne.The claimed turntable between the first and the second casting line has the advantage that with its installation only one roll changing device is required to change the rolls of the reducing stands of both casting lines. It is therefore not necessary to provide separate roll changing devices for their respective rolling stands, in particular reducing stands, for each of the two casting lines. This saves investment costs. A roll change can be carried out simply and reliably with the help of the turntable; In particular, such a roll change does not affect the work on the casting platform.

Der Begriff "Bedienseite" eines Walzgerüstes bezeichnet diejenige Seite des Walzgerüstes, quer zur Walzrichtung, auf welcher insbesondere die Walzenwechsel durchgeführt werden. Die gegenüberliegende Seite des Walzgerüstes wird als "Antriebsseite" bezeichnet; auf dieser Seite sind typischerweise die Antriebe für die Walzen, d. h. Motoren, Getriebe und Antriebsspindeln angeordnet, weshalb diese Antriebsseiten typischerweise kaum zugänglich sind und insbesondere für einen Walzenwechsel nicht geeignet sind.The term "operating side" of a roll stand refers to that side of the roll stand, transversely to the rolling direction, on which in particular the roll changes are performed. The opposite side of the rolling stand is referred to as the "drive side"; on this page are typically the drives for the rollers, i. H. Motors, gears and spindles arranged, which is why these drive sides are typically hardly accessible and are not suitable in particular for a roll change.

Der Begriff "Stützwalze" meint in der vorliegenden Beschreibung neben den eigentlichen Stützwalzen auch eventuell vorhandene Zwischenwalzen bei Sexto-Gerüsten. Auch der hier verwendete Begriff "weitere Walzen" meint insbesondere die eigentlichen Stützwalzen oder Zwischenwalzen.The term "back-up roll" means in the present description in addition to the actual back-up rolls also any intermediate rolls in the case of six-high scaffolds. The term "further rolls" used here also means in particular the actual backing rolls or intermediate rolls.

Gemäß einem ersten Ausführungsbeispiel umfasst die erfindungsgemäße Gieß-Walzanlage eine Gießhalle, in welcher unter anderem die Kokillen, die Strangführungen und die Reduziergerüste der beiden Gießlinien und ein Gießhallenkran angeordnet sind und neben der Gießhalle eine sich in Gießrichtung an die Gießhalle anschließende Nachbarhalle, welche ebenfalls einen Kran aufweist. Bei der Nachbarhalle kann es sich beispielsweise um eine Ofenhalle oder um eine Walzenhalle handeln.According to a first embodiment, the casting and rolling plant according to the invention comprises a casting hall in which, among other things, the molds, the strand guides and the Reduziergerüste the two casting lines and a Gießhallenkran are arranged and adjacent to the casting hall in the casting direction of the casting hall adjacent hall, which also has a Crane has. For example, the neighboring hall may be a kiln hall or a roller hutch.

Für die Anordnung des Drehtellers zwischen den beiden Gießlinien sind grundsätzlich drei Varianten möglich. Gemäß einer ersten Variante kann der Drehteller derart zwischen den beiden Gießlinien platziert sein, dass zumindest ein Teilbereich des Drehtellers für den Gießhallenkran oder den Kran der Nachbarhalle zugänglich ist. Alternativ dazu kann der Drehteller vollständig, z. B. durch die Gießbühne abgedeckt bzw. überdacht sein, so dass weder der Gießhallenkran noch der Kran der Nachbarhalle auf den Drehteller zugreifen können. Bei dieser zweiten Variante ist es deshalb erforderlich, dass in der Nachbarhalle zwischen den beiden Gießlinien und - in Gießrichtung gesehen - hinter dem Drehteller, vorzugsweise unmittelbar an dessen Peripherie angrenzend eine Zwischenablagestation für die Walzen des ersten und des zweiten Reduziergerüstes vorgesehen ist. Im Unterschied zu dem Drehteller ist die Zwischenablagestation nicht überdacht, insbesondere nicht von der Gießbühne, sondern sie ist aufgrund ihrer Anordnung in der Nachbarhalle für den Kran der Nachbarhalle zugänglich. Konkret dient der Kran der Nachbarhalle dann zum Anliefern neuer Walzen und zum Abtransportieren abgenutzter Walzen zu bzw. von der Zwischenablagestation. Gemäß einer dritten Variante ist auch eine Kombination der beiden erstgenannten Varianten möglich, wonach ein Teilbereich des Drehtellers entweder für den Gießhallenkran oder für den Kran in der Nachbarhalle zugänglich ist und zusätzlich darüber hinaus die Zwischenablagestation für den Kran in der Nachbarhalle zugänglich ist.For the arrangement of the turntable between the two casting lines basically three variants are possible. According to a first variant of the turntable can be placed between the two casting lines such that at least a portion of the turntable for the Gießhallenkran or the crane of the neighboring hall is accessible. Alternatively, the turntable completely, z. B. covered by the casting platform or be covered, so that neither the Gießhallenkran nor the crane of the neighboring hall can access the turntable. In this second variant, it is therefore necessary that in the neighboring hall between the two casting lines and - seen in the casting direction - behind the turntable, preferably immediately adjacent to the periphery a Zwischenablagestation is provided for the rollers of the first and second Reduziergerüstes. In contrast to the turntable, the intermediate storage station is not roofed, in particular not from the casting platform, but it is accessible due to their arrangement in the neighboring hall for the crane of the neighboring hall. Specifically, the crane of the neighboring hall then serves to deliver new rolls and to remove worn rolls to and from the intermediate storage station. According to a third variant, a combination of the two first-mentioned variants is possible, according to which a portion of the turntable is accessible either for the Gießhallenkran or for the crane in the neighboring hall and in addition beyond the Zwischenablagestation for the crane in the neighboring hall is accessible.

Der Drehteller ist in stationärer also nicht translatorisch verschiebbarer Ausgestaltung vorgesehen; er hat eine ortsfeste Drehachse.The turntable is provided in stationary so not translationally movable design; he has a fixed axis of rotation.

Vorteilhafterweise liegen das ersten und das zweite Reduziergerüst jeweils auf gleicher Höhe der ersten und zweiten Gießlinie, so dass ihre jeweiligen senkrechten Mittenebenen zusammenfallen. Der Drehteller ist dann vorzugsweise derart zwischen den beiden Gießlinien angeordnet, dass seine ortsfeste senkrechte Drehachse in den zusammenfallenden Mittenebenen des ersten und des zweiten Reduziergerüstes liegt. Es ist dann eine gleichartige Bedienung der beiden Reduziergerüste in den beiden Gießlinien möglich.Advantageously, the first and the second reducer are each at the same height of the first and second casting line, so that their respective vertical center planes coincide. The turntable is then preferably arranged between the two casting lines such that its stationary vertical axis of rotation lies in the coinciding central planes of the first and the second reducing stand. It is then possible a similar operation of the two Reduziergerüste in the two casting lines.

Der Radius des Drehtellers ist vorteilhafterweise so groß ausgebildet, dass der Drehteller mit seiner Peripherie an das erste und das zweite Reduziergerüst, jeweils an deren Bedienseiten, heranreicht. Dies hat den Vorteil, dass eine Überbrückungen zwischen Drehteller und Walzgerüsten nicht erforderlich ist. Das erste Reduziergerüst ist in Gießrichtung gesehen vorteilhafterweise unmittelbar hinter dem Ausgang der ersten Strangführung und das zweite Reduziergerüst ist vorteilhafterweise ebenfalls in Gießrichtung gesehen unmittelbar hinter dem Ausgang der zweiten Strangführung angeordnet. Durch diese nahe Anordnung der Reduziergerüste an dem Ausgang der Strangführung wird gewährleistet, dass die Gießhitze des Gießstrangs optimal ausgenutzt wird zum Reduzieren der Dicke des Gießstrangs. Insofern dient diese Anordnung der Energieeinsparung.The radius of the turntable is advantageously designed so large that the turntable with its periphery to the first and the second Reduziergerüst, respectively at their operating pages, reaching. This has the advantage that bridging between turntable and rolling stands is not required. The first reducing stand is seen in the casting direction advantageously immediately behind the output of the first strand guide and the second Reduziergerüst is advantageously also arranged in the casting direction immediately behind the exit of the second strand guide. Due to this close arrangement of the Reduction stands at the outlet of the strand guide ensure that the casting heat of the casting strand is optimally utilized to reduce the thickness of the casting strand. In this respect, this arrangement is used to save energy.

Auf dem Drehteller ist vorzugsweise eine Zug- und Schubeinrichtung vorgesehen, z. B. in Form einer Walzenwechsellokomotive oder eines Hydraulikzylinders. Die Zug- und Schubeinrichtung dient zum Ausfahren bzw. Herausziehen der Walzen aus dem ersten und/oder zweiten Reduziergerüst auf den Drehteller oder zum Einfahren bzw. Einschieben der Walzen von dem Drehteller in das erste und/oder zweite Reduziergerüst oder zum Verfahren bzw. Verschieben der Walzen zwischen dem Drehteller und der Zwischenablagestation.On the turntable preferably a pulling and pushing device is provided, for. B. in the form of a roll changing locomotive or a hydraulic cylinder. The pulling and pushing device is used to extend or pull out the rollers from the first and / or second Reduziergerüst on the turntable or for retraction or insertion of the rollers of the turntable in the first and / or second Reduziergerüst or for moving or moving the Rolling between the turntable and the intermediate storage station.

Das Vorsehen einer Öffnung im Bereich der Drehachse des Drehtellers oder das Vorsehen einer senkrecht ausgerichteten rohrförmigen Ausgestaltung im Bereich der Drehachse bietet den Vorteil, dass Energie- oder Medienleitungen vom Boden bzw. vom Fundament der Gieß-Walzanlage zu der Zug- und Schubeinrichtung auf den Drehteller geführt werden können.The provision of an opening in the region of the axis of rotation of the turntable or the provision of a vertically oriented tubular configuration in the region of the axis of rotation offers the advantage that energy or media lines from the bottom or the foundation of the casting rolling mill to the pulling and pushing device on the turntable can be performed.

Der Drehteller weist vorteilhafterweise eine obere Ebene mit Positionen zur Aufnahme von z.B. den Arbeitswalzen und eine untere Ebene mit Positionen zur Aufnahme von weiteren Walzen, z.B. der Stützwalzen, von zumindest einem der beiden Reduziergerüste der beiden Gießlinien auf. Diese Ausgestaltung bietet den Vorteil, dass gleichzeitig nicht nur einzelne Walzen, sondern ganze Walzensätze eventuell mit einem Walzenwechselstuhl auf dem Drehteller Platz finden können.The turntable advantageously has an upper level with positions for receiving e.g. the work rolls and a lower level with positions for receiving further rolls, e.g. the back-up rolls, of at least one of the two reducing stands of the two casting lines. This embodiment has the advantage that at the same time not only individual rolls, but entire sets of rolls may eventually find room on the turntable with a roll changing chair.

Grundsätzlich kann jede der beiden Gießlinien ihre eigene Gießbühne aufweisen, wobei über den Zwischenraum zwischen den beiden Gießlinien auch ein Zwischenraum zwischen den beiden Gießbühnen denkbar ist. In diesen Zwischenraum könnte beispielsweise der Gießhallenkran einfahrbar sein für einen Zugriff auf zumindest Teilbereiche des Drehtellers. Es ist möglich, dass beide Gießbühnen in einer gemeinsamen Gießbühne kombiniert werden, welche sich dann auch quer zur Gießrichtung erstreckt und beide Gießlinien überspannt. Die Gießlinien sind jeweils als Gieß-Walz-Anlagen ausgebildet, wie beispielsweise als Compact Strip Produktion Anlage einleitend unter Bezugnahme auf Figur 4 beschrieben.In principle, each of the two casting lines can have their own casting platform, wherein a space between the two casting platforms is also conceivable via the intermediate space between the two casting lines. In this gap, for example, the Gießhallenkran could be retracted for access to at least portions of the turntable. It is possible that both casting platforms are combined in a common casting platform, which is then also extends transversely to the casting direction and spans both casting lines. The casting lines are in each case designed as cast-rolling plants, such as, for example, as a compact strip production plant by way of introduction with reference to FIG FIG. 4 described.

Die oben genannte Aufgabe der Erfindung wird weiterhin durch die in den Ansprüchen 14 bis 19 beschriebenen Verfahren zum Ein- und Ausbau von Walzen in das Reduziergerüst der erfindungsgemäßen Gieß-Walzanlage gelöst. Die Vorteile dieser Verfahren entsprechen den oben mit Bezug auf die beanspruchte Gieß-Walzanlage genannten Vorteilen.The above object of the invention is further achieved by the method described in claims 14 to 19 for the installation and removal of rolls in the reducing stand of the casting-rolling plant according to the invention. The advantages of these methods correspond to the advantages mentioned above with respect to the claimed foundry rolling mill.

Der Beschreibung sind insgesamt vier Figuren beigefügt, wobei

  • Figur 1 einen Längsquerschnitt durch den Drehteller zwischen zwei Linien der erfindungsgemäßen Gieß-Walzanlage mit Blick auf eine Gießlinie;
  • Figur 2 eine Draufsicht auf die erfindungsgemäße Gieß-Walzanlage mit einer ersten und einer zweiten Gießlinie; (mögliche weitere Gießlinien sind nicht dargestellt)
  • Figur 3 einen Querschnitt durch die erfindungsgemäße Gieß-Walzanlage auf Höhe der Mittenebenen der beiden Reduziergerüste; und
  • Figur 4 eine Gieß-Walzanlage gemäß dem Stand der Technik
zeigt.The description is a total of four figures attached, wherein
  • FIG. 1 a longitudinal cross section through the turntable between two lines of the casting rolling mill according to the invention with a view of a casting line;
  • FIG. 2 a plan view of the casting plant according to the invention with a first and a second casting line; (possible further casting lines are not shown)
  • FIG. 3 a cross section through the casting-rolling mill according to the invention at the level of the middle planes of the two Reduziergerüste; and
  • FIG. 4 a casting mill according to the prior art
shows.

Die Erfindung wird nachfolgend unter Bezugnahme auf die genannten Figuren in Form von Ausführungsbeispielen detailliert beschrieben. In allen Figuren sind gleiche technische Elemente mit gleichen Bezugszeichen bezeichnet.The invention will be described in detail below with reference to the said figures in the form of embodiments. In all figures, the same technical elements are designated by the same reference numerals.

Figur 1 zeigt einen Längsquerschnitt durch die erfindungsgemäße Gieß-Walzanlage 100. Es handelt sich um einen Ausschnitt aus der zuvor unter Bezugnahme auf Figur 4 beschriebenen allgemeinen Gieß-Walzanlage, allerdings ergänzt mit dem erfindungsgemäßen Drehteller 130. Konkret ist in der Figur 1 eine Gießhalle 138 zu erkennen, an welche sich in Gießrichtung R gesehen eine Nachbarhalle 140 anschließt. Die Grenze zwischen den beiden Hallen fällt in Figur 1 zusammen mit dem äußeren Rand der ersten Gießbühne 118-1; diese Grenze ist in Figur 1 mit dem Bezugszeichen 139 bezeichnet. Auf der Gießbühne ist die Verteilereinrichtung 120 in Form einer verfahrbaren Verteilerrinne zu erkennen. Weiterhin ist am linken Bildrand der Ausläufer der ersten Strangführung 114-1 zu erkennen, dem in Gießrichtung R ein erstes Reduziergerüst 116-1 nachgeordnet ist. Dem ersten Reduziergerüst wiederum ist eine Vorrichtung 145 zum Entnehmen eines Kaltstrangs nachgeordnet. Auch diese Kaltstrang-Entnahmevorrichtung 145 befindet sich gemäß Figur 1, genau wie die erste Strangführung 114-1 und das erste Reduziergerüst 116-1 unterhalb der ersten Gießbühne 118-1. Alle diese Einrichtungen sind deshalb für einen Gießhallenkran, der sich typischerweise oberhalb der Gießbühne befindet, nicht zugänglich. In Gießrichtung weiter gesehen folgt hinter der Kaltstrang-Entnahmeeinrichtung in der Nachbarhalle 140 eine Schere 192 und ein Tunnelofen 194. Der Schere 192 ist ein Schrottkübel 193 zugeordnet. In Figur 1 ist weiterhin die erfindungsgemäße Walzenwechseleinrichtung in Form des Drehtellers 130 im Längsschnitt zu erkennen. Seine ortsfeste Drehachse 134 fällt, wie in Figur 1 gezeigt, vorzugsweise mit der senkrechten Mittenebene M1 des ersten Reduziergerüstes 116-1 zusammen. Zu erkennen ist weiterhin, dass der Drehteller über eine Drehtellerlagerung 129 auf einem Fundament 126 abgestützt und drehbar gelagert ist. Die Drehbewegung des Drehtellers 130 um seine senkrechte Drehachse 134 erfolgt mit Hilfe eines Drehtellerantriebs 127. Es sind Verriegelungseinrichtungen bzw. Indexiereinrichtungen 128 vorgesehen, um den Drehteller 130 in vorbestimmten Drehpositionen zu arretieren. FIG. 1 shows a longitudinal cross-section through the casting mill 100 according to the invention. It is a section of the previously described with reference to FIG. 4 described general casting-rolling mill, but supplemented with the turntable 130 according to the invention FIG. 1 to recognize a casting hall 138, which is followed by a neighboring hall 140 seen in the casting direction R. The border between the two halls falls in FIG. 1 together with the outer edge of the first casting platform 118-1; this limit is in FIG. 1 designated by the reference numeral 139. On the casting platform, the distributor device 120 can be seen in the form of a movable distributor trough. Furthermore, it can be seen on the left edge of the image of the tail of the first strand guide 114-1, in the casting direction R, a first Reduziergerüst 116-1 is arranged downstream. In turn, a device 145 for removing a cold leg is arranged downstream of the first reducing stand. This cold-strand removal device 145 is according to FIG. 1 as well as the first strand guide 114-1 and the first reducer 116-1 below the first casting platform 118-1. All these devices are therefore not accessible to a casting hall crane, which is typically located above the casting floor. Further seen in the casting direction follows behind the cold strand removal device in the adjacent hall 140, a scissors 192 and a tunnel furnace 194. The scissors 192 is associated with a scrap bucket 193. In FIG. 1 Furthermore, the roller changing device according to the invention in the form of the turntable 130 can be seen in longitudinal section. Its fixed axis of rotation 134 falls, as in FIG. 1 shown, preferably with the vertical center plane M1 of the first Reduziergerüstes 116-1 together. It can also be seen that the turntable is supported by a turntable bearing 129 on a foundation 126 and rotatably supported. The rotary movement of the turntable 130 about its vertical axis of rotation 134 is effected by means of a turntable drive 127. Locking devices or indexing devices 128 are provided in order to lock the turntable 130 in predetermined rotational positions.

Figur 2 zeigt eine Draufsicht auf die erfindungsgemäße Gieß-Walzanlage 100. Zu erkennen sind die erste Gießlinie 110-1 sowie eine parallel dazu angeordnete zweite Gießlinie 110-2. Die Gießlinien sind in dem Abstand d zueinander beabstandet. Die Gießrichtung R verläuft in Figur 2 von rechts nach links. Von der oberen ersten Gießlinie 110-1 sind schematisch dargestellt die erste Kokille 112-1, die erste Strangführung 114-1, das erste Reduziergerüst 116-1, die erste Schere 192-1 sowie der erste Tunnelofen 194-1. In der ersten Schere 192-1 wird der einlaufende Gießstrang 210-1 in Brammen 220-1 zerschnitten. Die parallel verlaufende zweite Gießlinie 110-2 ist analog aufgebaut. FIG. 2 shows a plan view of the casting plant 100 according to the invention. The first pouring line 110-1 and a second pouring line 110-2 arranged parallel thereto can be seen. The casting lines are spaced apart by the distance d. The casting direction R runs in FIG. 2 from right to left. From the upper first pouring line 110-1 are shown schematically the first mold 112-1, the first strand guide 114-1, the first reducer 116-1, the first pair of shears 192-1 and the first tunnel kiln 194-1. In the first scissors 192-1, the incoming cast strand 210-1 is cut into slabs 220-1. The parallel second casting line 110-2 is constructed analogously.

Zwischen den beiden Gießlinien ist der erfindungsgemäße Drehteller 130 zu erkennen. Die ortsfeste Drehachse 134 des Drehtellers 130 liegt in den senkrechten Mittenebenen M1, M2 des ersten und des zweiten Reduziergerüstes 116-1, 116-2, welche aufgrund der symmetrischen Anordnung der einzelnen Komponenten der Gießlinien zusammenfallen. Konkret fallen die beiden Mittenebenen M1, M2 deshalb zusammen, weil das erste und das zweite Reduziergerüst 116-1, 116-2 auf gleicher Höhe in Gießrichtung R liegen. Es ist zu erkennen, dass der Drehteller 130 verschiedene Positionen P1, P2, P3 aufweist zur Aufnahme der Walzen des ersten oder zweiten der Reduziergerüstes 116-1, 116-2. In der Mitte des Drehtellers kann eine Zug- und Schubeinrichtung 116 angeordnet sein, z. B. in Form einer Walzenwechsellokomotive oder eines Hydraulikzylinders zum Verschieben der Walzen. Zu erkennen ist weiterhin eine Öffnung 136 in der Mitte des Drehtellers; diese Öffnung kann dazu dienen, Medien oder Energieleitungen zur Versorgung der Zug- und Schubeinrichtung durchzuführen. Die Grenze zwischen der Gießhalle 138 und der Nachbarhalle 140 ist in Figur 2 ebenfalls mit dem Bezugszeichen 139 bezeichnet. Es ist zu erkennen, dass bei dem in Figur 2 dargestellten Ausführungsbeispiel ein Teilbereich, genauer gesagt ein Segment des Drehtellers stets in die Nachbarhalle 140 hineinragt. Dieses Segment ist in Figur 2 mit dem Bezugszeichen 132 bezeichnet. Weil dieses Segment in die Nachbarhalle 140 hineinragt, ist es für den Kran der Nachbarhalle zugänglich, so dass dieser abgenutzte Walzen von dem segmentförmigen Bereich des Drehtellers 130 z. B. in eine Walzenwerkstatt abtransportieren kann oder auch neue Walzen aus der Walzenwerkstatt in dem Segmentbereich 132 auf dem Drehteller abstellen kann. Eine Zug- und Schubeinrichtung 160 ist erkennbar auf dem Drehteller 130 platziert und ist über der Öffnung 136 auf Schienen gelagert.The turntable 130 according to the invention can be seen between the two casting lines. The fixed axis of rotation 134 of the turntable 130 is located in the vertical center planes M1, M2 of the first and second Reduziergerüstes 116-1, 116-2, which coincide due to the symmetrical arrangement of the individual components of the casting lines. Specifically, the two center planes M1, M2 coincide because the first and the second reducer 116-1, 116-2 lie at the same height in the casting direction R. It can be seen that the turntable 130 has different positions P1, P2, P3 for receiving the rolls of the first or second of the reducing stand 116-1, 116-2. In the middle of the turntable, a pulling and pushing device 116 may be arranged, for. B. in the form of a roll changing locomotive or a hydraulic cylinder for moving the rollers. To recognize further is an opening 136 in the middle of the turntable; this opening can be used to perform media or power lines to supply the pulling and pushing device. The boundary between the casting hall 138 and the neighboring hall 140 is in FIG. 2 also designated by reference numeral 139. It can be seen that in the in FIG. 2 illustrated embodiment, a portion, more precisely a segment of the turntable always protrudes into the adjacent hall 140. This segment is in FIG. 2 designated by the reference numeral 132. Because this segment protrudes into the adjacent hall 140, it is accessible to the crane of the neighboring hall, so that these worn rolls of the segmental region of the turntable 130 z. B. can carry away in a roll workshop or can park new rolls from the roll shop in the segment area 132 on the turntable. A pulling and pushing device 160 is recognizably placed on the turntable 130 and is mounted above the opening 136 on rails.

Zu erkennen ist in Figur 2 weiterhin die Zwischenablagestation 150, welche sich in Gießrichtung R, vorzugsweise an der Peripherie des Drehtellers anschließt. Die Zwischenablagestation 150 weist vorzugsweise ihrerseits zur Drehachse 134 des Drehtellers radial ausgerichtete Schienenausläufer 152 auf, auf welchen die Walzen der beiden Reduziergerüste 116-1, 116-2 zwischengelagert werden können. Die radiale Ausrichtung der Schienenausläufer zum Drehpunkt 134 des Drehtellers bietet den Vorteil, dass die Walzen vom Drehteller auf die Zwischenablagestation und umgekehrt verschoben werden können.It can be seen in FIG. 2 Furthermore, the Zwischenablagestation 150, which adjoins the casting direction R, preferably at the periphery of the turntable. The intermediate storage station 150 preferably has, in turn, radially aligned rail outlets 152 to which the rotary axle 134 of the turntable is mounted, on which the rollers of the two reducing stands 116 - 1, 116 - 2 can be temporarily stored. The radial orientation of the rail runners to the pivot point 134 of the turntable has the advantage that the rollers from the turntable can be moved to the Zwischenablagestation and vice versa.

Figur 3 zeigt beispielhaft einen Querschnitt durch die erfindungsgemäße Gieß-Walzanlage 100 auf Höhe der gemeinsamen Mittenebenen M1, M2 eines ersten und zweiten vier-Walzen Reduziergerüstes 116-1, 116-2. Es ist zu erkennen, dass die beiden Reduziergerüste 116-1, 116-2 beispielhaft zwei Arbeitswalzen 310, eine obere Stützwalze 320-1 und eine untere Stützwalze 320-2 aufweisen. Zwischen den beiden Reduziergerüsten ist der erfindungsgemäße Drehteller 130 im Querschnitt zu erkennen, auf welchem beispielhaft Sätze von Arbeitswalzen 310 abgelegt sind. In der Mitte des Drehtellers 130 ist die besagte Zug- und Schubeinrichtung 160 zu erkennen. FIG. 3 shows by way of example a cross section through the casting plant 100 according to the invention at the level of the common center planes M1, M2 of a first and second four-roller Reduziergerüstes 116-1, 116-2. It will be appreciated that the two reducers 116-1, 116-2 exemplarily have two work rolls 310, an upper backup roll 320-1, and a lower backup roll 320-2. Between the two Reduziergerüsten the turntable 130 according to the invention can be seen in cross section, on which exemplary sets of work rolls 310 are stored. In the middle of the turntable 130, the said pulling and pushing device 160 can be seen.

Ein Walzenwechsel, genauer gesagt ein Ein- und Ausbau der beispielhaft genannten Arbeits- und Stützwalzen in die Reduziergerüste 116-1, 116-2 erfolgt bei der soeben beschriebenen erfindungsgemäßen Gieß-Walzanlage gemäß den folgenden Verfahren:A roll change, more precisely an installation and removal of the exemplified working and support rolls in the Reduziergerüste 116-1, 116-2 takes place in the casting-rolling plant according to the invention just described according to the following methods:

Das Verfahren zum Ausbau von mindestens einer der abgenutzten Arbeitswalzen 310 aus einem der beiden Reduziergerüste 116-1, 116-2 der Gieß- Walzanlage 100 weist folgende Schritte auf:

  • 14a) Drehen des Drehtellers 130 so, das eine freie zweite Position P2 auf dem Drehteller zur Aufnahme der abgenutzten Arbeitswalze vor dem ersten oder zweiten Reduziergerüst 116-1, 116-2 steht;
  • 14b) Herausziehen der mindestens einen abgenutzten Arbeitswalze 310 mit Hilfe der Zug- und Schubeinrichtung 160 aus dem ersten oder zweiten Reduziergerüst auf den Drehteller 130 in die zweite Position P2;
  • 14c) Drehen des Drehtellers so, dass die zweite Position P2, welche mit der mindestens einen abgenutzten Arbeitswalze 310 besetzt ist, der Zwischenablagestation 150 gegenüber steht;
  • 14d) Ziehen oder Schieben der mindestens einen abgenutzten Arbeitswalze 310 von dem Drehteller 130) auf die Zwischenablagestation 150); und
  • 14e) Abtransportieren der abgenutzten Arbeitswalze 310 von der Zwischenablagestation 150 mit dem Kran 142 der Nachbarhalle 140 in eine Walzenwerkstatt;
oder alternativ zu den Schritten 14d) und 14e), wenn ein Teilbereich des Drehtellers 130) für den Gießhallenkran oder den Kran der Nachbarhalle zugänglich ist:
  • 14d') Abtransportieren der abgenutzten Arbeitswalzen 310 von dem Drehteller mit dem Gießhallenkran oder dem Kran der Nachbarhalle.
The method for removing at least one of the worn work rolls 310 from one of the two reducing stands 116-1, 116-2 of the casting mill 100 comprises the following steps:
  • 14a) rotating the turntable 130 so as to provide a free second position P2 on the turntable for receiving the worn work roll in front of the first or second reducer 116-1, 116-2;
  • 14b) pulling out the at least one worn work roll 310 by means of the pulling and pushing device 160 from the first or second reducing stand onto the turntable 130 into the second position P2;
  • 14c) rotating the turntable so that the second position P2 occupied by the at least one worn work roll 310 opposes the intermediate laying station 150;
  • 14d) pulling or pushing the at least one worn work roll 310 from the turntable 130) onto the clipboard station 150); and
  • 14e) removing the worn work roll 310 from the intermediate storage station 150 with the crane 142 of the adjacent hall 140 into a roll workshop;
or alternatively to steps 14d) and 14e), when a portion of the turntable 130) is accessible to the casting hall crane or the crane of the neighboring hall:
  • 14d ') Transporting the worn out work rolls 310 from the turntable to the casting hall crane or the crane of the neighboring hall.

Ein Einbau von mindestens einer neuen Arbeitswalze 310 in das Reduziergerüst 116-1, 116-2 der Gieß-Walzanlage erfolgt mit folgenden Schritten:

  • 15a) Durchführung von zumindest den Schritten 14a) und 14b), optional auch zusätzlich von den Schritten 14c) und 14d);
  • 15b) Aufsetzen von der mindestens einen neuen Arbeitswalze 310 mit Hilfe des Krans der Nachbarhalle 140 auf die Zwischenablagestation 150;
  • 15c1) Drehen des Drehtellers 130 so, dass eine erste Position P1 zur Aufnahme von der mindestens einer neuen Arbeitswalze 310 der Zwischenablagestation 150 gegenüber liegt; und
  • 15c2) Ziehen oder Schieben der mindestens einen neuen Arbeitswalze 310 mit Hilfe der Zug- und Schubeinrichtung 160 von der Zwischenablagestation bis sie vollständig in der ersten Position P1 auf dem Drehteller liegt;
  • 15d) Drehen des Drehtellers so, dass die erste Position, welche mit der mindestens einen neuen Arbeitswalze 310 besetzt ist, vor dem ersten oder zweiten Reduziergerüst 116-1, 116-2 steht, aus welchem zuvor die mindestens eine verbrauchte Arbeitswalze herausgezogen wurde;
  • 15e) Einschieben der mindestens einen neuen Arbeitswalze 310 mit Hilfe der Zug-und Schubeinrichtung 160 in das Reduziergerüst 116-1, 116-2;
    oder der alternativ zu den Schritten 15b) - 15c2), wenn ein Teilbereich des Drehtellers für den Gießhallenkran oder den Kran der Nachbarhalle zugänglich ist: 15b') Drehen des Drehtellers 130 so, dass eine erste Position P1 auf dem Drehteller zur Aufnahme von der mindestens einen neuen Arbeitswalze 310 für den Kran 142 der Walzenhalle zugänglich ist;
  • 15c') Aufsetzen der mindestens einen neuen Arbeitswalze 310 mit Hilfe des Gießhallenkrans oder des Krans 142 der Nachbarhalle 140 auf die erste Position auf dem Drehteller.
An installation of at least one new work roll 310 in the Reduziergerüst 116-1, 116-2 of the casting-rolling mill is carried out with the following steps:
  • 15a) performing at least steps 14a) and 14b), optionally additionally from steps 14c) and 14d);
  • 15b) placing the at least one new work roll 310 by means of the crane of the neighboring hall 140 onto the intermediate laying station 150;
  • 15c1) rotating the turntable 130 so that a first position P1 for receiving the at least one new work roll 310 opposes the intermediate laying station 150; and
  • 15c2) pulling or pushing the at least one new work roll 310 by means of the pulling and pushing device 160 from the intermediate laying station until it lies completely in the first position P1 on the turntable;
  • 15d) rotating the turntable so that the first position occupied by the at least one new work roll 310 is in front of the first or second reducer 116-1, 116-2 from which the at least one used work roll has previously been extracted;
  • 15e) insertion of the at least one new work roll 310 by means of the pulling and pushing device 160 in the Reduziergerüst 116-1, 116-2;
    or the alternative to steps 15b) - 15c2), when a portion of the turntable for the casting hall crane or the crane of the neighboring hall is accessible: 15b ') turning the turntable 130 so that a first position P1 on the turntable for receiving the at least a new work roll 310 for the crane 142 of the roll hall is accessible;
  • 15c ') placing the at least one new work roll 310 by means of the casting hall crane or the crane 142 of the adjacent hall 140 to the first position on the turntable.

Das Verfahren zum Ausbau von abgenutzten weiteren Walzen, wie z.B. Stützwalzen 320 aus einem Reduziergerüst 116-1, 116-2 der Gieß-Walzanlage weist folgende Schritte auf:

  • 16a) Positionieren eines Walzenwechselstuhls auf dem Drehteller 130;
  • 16b) Drehen des Drehtellers so, dass eine freie dritte Position P3 auf dem Drehteller zur Aufnahme der abgenutzten Stützwalzen vor dem ersten oder zweiten Reduziergerüst 116-1, 116-2 steht;
  • 16c) Herausziehen der unteren Stützwalze 320-1 aus dem Reduziergerüst in die dritte Position P3 auf dem Drehteller 130
  • 16d) Aufsetzten des Stützwalzen-Wechselstuhls auf die abgenutzte untere Stützwalze 320-1 in der dritten Position P3;
  • 16e) Einfahren der abgenutzten unteren Stützwalze 320-1 zusammen mit dem aufgesetzten Stützwalzen-Wechselstuhl in das Reduziergerüst 116-1, 116-2;
  • 16f) in dem Reduziergerüst: Absetzen der abgenutzten oberen Stützwalze 320-2 auf den Stützwalzen-Wechselstuhl;
  • 15g) Herausziehen der oberen und unteren Stützwalzen mit dem Stützwalzen-Wechselstuhl aus dem Reduziergerüst an die dritte Position P3 auf dem Drehteller 130;
  • 16h) Drehen des Drehtellers 130 so, dass die dritte Position der Walzen-Zwischenablagestation 150 gegenüber liegt;
  • 16i) Schieben oder Ziehen des Stützwalzen-Wechselstuhls mit den beiden Stützwalzen von dem Drehteller auf die Zwischenablagestation 150; und
  • 16j) Abtransportieren der oberen Stützwalze 320-2, des Stützwalzen-Wechselstuhls und der unteren Stützwalze 320-1 nacheinander mit dem Kran 142 der Walzenhalle von der Zwischenablagestation;
oder alternativ zu den Schritten 16h) - 16j), wenn ein Teilbereich des Drehtellers 130 für den Gießhallenkran oder den Kran der Nachbarhalle zugänglich ist: 16j')Abtransportieren der oberen Stützwalze 320-2, des Stützwalzen-Wechselstuhls und der unteren Stützwalze 320-1 nacheinander mit dem Gießhallenkran oder dem Kran der Nachbarhalle in die Walzenwerkstatt.The process for removing worn further rolls, such as back-up rolls 320 from a reduction stand 116-1, 116-2 of the casting-rolling mill, comprises the following steps:
  • 16a) positioning a roll changing chair on the turntable 130;
  • 16b) rotating the turntable so that a free third position P3 on the turntable for receiving the worn backup rolls is in front of the first or second reducer 116-1, 116-2;
  • 16c) pulling the lower support roller 320-1 out of the reducing stand into the third position P3 on the turntable 130
  • 16d) placing the back-up roll changing chair on the worn lower back-up roll 320-1 in the third position P3;
  • 16e) retracting the worn lower back-up roll 320-1 together with the attached back-up roll change-over chair into the reducer 116-1, 116-2;
  • 16f) in the reducer: depositing the worn upper backup roll 320-2 on the backup roll changer;
  • 15g) withdrawing the upper and lower backup rolls with the backup roll changing chair from the Reduziergerüst to the third position P3 on the turntable 130;
  • 16h) rotating the turntable 130 so that the third position is opposed to the roll clipboard station 150;
  • 16i) pushing or pulling the backup roll changing chair with the two back-up rolls from the turntable to the intermediate laying station 150; and
  • 16j) removing the upper back-up roll 320-2, the backup roll change-over chair, and the lower back-up roll 320-1 sequentially with the roll 142 crane 142 from the clipboard station;
or alternatively to steps 16h) - 16j), when a portion of the turntable 130 is accessible to the casting hall crane or the crane of the adjacent hall: 16j ') removing the upper back-up roll 320-2, the backup roll change-over chair, and the lower back-up roll 320-1 one after the other with the casting hall crane or the crane of the neighboring hall in the roller workshop.

Schritt 16c) und die nachfolgenden Schritte werden erst durchgeführt, nachdem zuvor die beiden Arbeitswalzen 310 aus dem Reduziergerüst 116-1, 116-2 ausgebaut worden waren.Step 16c) and the subsequent steps are only performed after the two work rolls 310 have previously been removed from the reducing stand 116-1, 116-2.

Wenn der Stützwalzen-Wechselstuhl im Rahmen von Schritt 15a) bereits an der dritten Position P3 auf dem Drehteller 130 platziert war, wird er vor Durchführung des Schrittes 16c) angehoben und nach Durchführung von Schritt 16c) im Rahmen von Schritt 16d) auf die abgenutzte untere Stützwalze abgesenkt.If the back-up change-over chair was already placed on the turntable 130 at the third position P3 in the step 15a), it is raised before performing step 16c) and, after performing step 16c) in the step 16d), on the worn lower one Back-up roller lowered.

Das Verfahren zum Einbau von neuen Stützwalzen 320 in ein Reduziergerüst 116-1, 116-2 der Gieß-Walzanlage 100 erfolgt mit folgenden Schritten:

  • 19a) Transportieren einer neuen unteren Stützwalze 320-1 auf die Zwischenablagestation 150 mit Hilfe des Krans 142 der Nachbarhalle;
  • 19b) Aufsetzen eines Stützwalzen-Wechselstuhls auf die neue untere Stützwalze 320-1 auf der Zwischenablagestation 150 mit Hilfe des Krans 142 der Nachbarhalle;
  • 19c) Auflegen einer neuen oberen Stützwalze 320-2 auf den Stützwalzenwechselstuhl mit Hilfe des Krans 142 der Nachbarhalle;
  • 19d) Ziehen oder Schieben des Stützwalzenwechselstuhls zusammen mit der unteren und oberen Stützwalze von der Zwischenablagestation an eine dritte Position P3 auf dem Drehteller 130;
  • 19e) Drehen des Drehtellers so, dass die dritte Position P3 vor dem ersten oder zweiten Reduziergerüst 116-1, 116-2 steht;
  • 19f) Schieben des Stützwalzen-Wechselstuhls zusammen mit der unteren und oberen Stützwalze 320-1, 320-2 in das Reduziergerüst 116-1, 116-2;
  • 19g) Abheben der oberen neuen Stützwalze von dem Walzenwechselstuhl und Einhängen der oberen Stützwalze in das Reduziergerüst;
  • 19h) Herausziehen der unteren Stützwalze 320-1 mit dem aufgesetzten Stützwalzen-Wechselstuhl aus dem Reduziergerüst 116-1, 116-2;
  • 19i) Abheben des Stützwalzenwechselstuhls von der unteren Stützwalze und auf Drehteller 130 abstellen;
  • 19j) Einschieben und Einbauen der neuen unteren Stützwalze in das Reduziergerüst
oder alternativ zu den Schritten 19a) - 19d), wenn ein Teilbereich des Drehtellers für den Gießhallenkran oder den Kran der Nachbarhalle zugänglich ist:
  • 19a') Transportieren einer neuen unteren Stützwalze 320-1 auf den Drehteller mit Hilfe des Gießhallenkrans oder des Krans der Nachbarhalle;
  • 19b') Aufsetzen eines Stützwalzen-Wechselstuhls auf die neue untere Stützwalze auf dem Drehteller mit Hilfe des Gießhallenkrans oder des Krans der Nachbarhalle; und
  • 19c') Auflegen einer neuen oberen Stützwalze 320-2 auf den Stützwalzenwechselstuhl mit Hilfe des Gießhallenkrans oder des Krans der Nachbarhalle.
The method for installing new back-up rolls 320 in a reduction stand 116-1, 116-2 of the casting-rolling plant 100 is carried out with the following steps:
  • 19a) transporting a new lower back-up roll 320-1 onto the clipboard station 150 by means of the crane 142 of the neighboring hall;
  • 19b) placing a backup roll changeover chair on the new lower backup roll 320-1 on the clipboard station 150 by means of the crane 142 of the neighboring hall;
  • 19c) placing a new upper backup roll 320-2 on the backup roll change chair by means of the crane 142 of the neighboring hall;
  • 19d) pulling or pushing the backup roll change chair together with the lower and upper backup rolls from the clipboard station to a third position P3 on the turntable 130;
  • 19e) rotating the turntable so that the third position P3 is in front of the first or second reducer 116-1, 116-2;
  • 19f) pushing the backup roll changing chair together with the lower and upper backup rolls 320-1, 320-2 into the reducer 116-1, 116-2;
  • 19g) lifting the upper new support roller from the roll change chair and hooking the upper support roller into the reducer;
  • 19h) withdrawing the lower backup roll 320-1 with the attached backup roll change-over chair from the Reduziergerüst 116-1, 116-2;
  • 19i) Lift off the back-up roll change chair from the lower back-up roller and place it on turntable 130;
  • 19j) Inserting and installing the new lower backup roller in the reducer
or alternatively to steps 19a) - 19d), if a portion of the turntable is accessible to the casting hall crane or the crane of the neighboring hall:
  • 19a ') transporting a new lower support roller 320-1 on the turntable by means of the casting hall crane or the crane of the neighboring hall;
  • 19b ') placing a back-up roll changing chair on the new lower back-up roll on the turntable by means of the casting hall crane or the crane of the neighboring hall; and
  • 19c ') Laying a new upper backup roll 320-2 on the backup roll change chair using the Gießhallenkrans or the crane of the neighboring hall.

Bei der Durchführung aller beschriebenen Verfahren kann die Reihenfolge der einzelnen Verfahrensschritte grundsätzlich beliebig sein; sie muss lediglich technologisch sinnvoll sein. Sämtliche Zug- oder Schubbewegungen der Arbeits-oder Stützwalzen können mit Hilfe der Zug- und Schubeinrichtung durchgeführt werden.In the implementation of all described methods, the order of the individual method steps can be basically arbitrary; it just has to be technologically meaningful. All pulling or pushing movements of the working or support rollers can be carried out with the aid of the pulling and pushing device.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

100100
Gieß-WalzanlageCasting and rolling plant
110-1110-1
erste Gießliniefirst pouring line
110-2110-2
zweite Gießliniesecond casting line
112-1112-1
erste Kokillefirst mold
112-2112-2
zweite Kokillesecond mold
114-1114-1
erste Strangführungfirst strand guide
114-2114-2
zweite Strangführungsecond strand guide
116-1116-1
erstes Reduziergerüstfirst reducer
116-2116-2
zweites Reduziergerüstsecond reducer
118-1118-1
erste Gießbühnefirst casting stage
118118
gemeinsame Gießbühnecommon casting platform
120120
Verteilereinrichtungdistribution facility
126126
Fundamentfoundation
127127
DrehtellerantriebTurntable drive
128128
Verriegelungs- oder IndexierungseinrichtungLocking or indexing device
129129
DrehtellerlagerungTurntable bearing
130130
Walzenwechseleinrichtung, DrehtellerRoller changing device, turntable
132132
Teilbereich, beispielsweise SegmentSubarea, for example Segment
134134
Drehachseaxis of rotation
136136
Öffnungopening
138138
Gießhallecast house
140140
Nachbarhalleneighboring hall
142142
Kran der NachbarhalleCrane of the neighboring hall
145145
Kaltstrang-EntnahmevorrichtungCold strand removal device
150150
ZwischenablagestationClipboard station
152152
Schienenausläufer auf ZwischenablagestationRail spurs on intermediate storage station
160160
Zug- und SchubeinrichtungPull and push device
180180
Tundishtundish
190190
GießhallenkranGießhallenkran
192-1192-1
erste Scherefirst pair of scissors
193193
Schrottkübelscrap bucket
194194
Tunnelofentunnel kiln
194-1194-1
erster Tunnelofenfirst tunnel kiln
194-2194-2
zweiter Tunnelofensecond tunnel kiln
195195
FertigwalzstraßeFinishing mill
196196
Kühlstreckecooling section
197197
Haspeleinrichtungcoiler
198198
Steuerstandhelm
210-1210-1
erster Gießstrangfirst cast strand
210-2210-2
zweiter Gießstrangsecond casting strand
220-1220-1
Brammen erster GießlinieSlabs first pouring line
220-2220-2
Brammen zweiter GießlinieSlabs of the second casting line
230-1230-1
Warmband erster GießlinieHot strip first casting line
230-2230-2
Warmband zweiter GießlinieHot strip second casting line
300300
Zwischenraumgap
310310
ArbeitswalzeStripper
320-1320-1
obere Stützwalzeupper support roller
320-2320-2
untere Stützwalzelower support roller
BS1, BS2BS1, BS2
Bedienseitenoperating pages
dd
Abstanddistance
RR
Gießrichtungcasting
rr
Radiusradius
M1, M2M1, M2
Mittenebenencenter planes
P1, P2, P3P1, P2, P3
Positionenpositions

Claims (20)

  1. Casting and rolling plant (100) for producing hot strip (230-1, 230-2), with a first casting line (110-1) having a first mould (112-1) for producing a first cast strip (210-1), a first strip guide (114-1), which is downstream of the first mould in casting direction (R), for deflecting the cast strip from the vertical to the horizontal, a first reducing stand (116-1) for reducing the thickness of the first cast strip and a first casting platform (118-1) which covers the first strip guide (114-1) and at least parts of the first reducing stand (116-1);
    a second casting line (110-2) having a second mould (112-2 for producing a second cast strip (210-2), a second strip guide (114-2), which is downstream of the second mould in casting direction, for deflecting the second cast strip from the vertical to the horizontal, a second reducing stand (116-2) for reducing the thickness of the second cast strip (210-2) and a second casting platform which covers the second strip guide (114-2) and at least parts of the second reducing stand (116-2);
    at least one distributor device (120) for supplying the first and second moulds (112-1, 112-2) with metal melts; and
    a roll change device (130) for changing the rolls of the first and second reducing stands (116-1, 116-2);
    wherein the two casting lines are arranged parallelly to and at a spacing from one another; characterised in that
    the first and second reducing stands (116-1, 116-2) are installed in such a way that the operating sides (BS-1; BS-2) thereof are each disposed in the intermediate space (300) between the two casting lines (110-1, 110-2); and
    the roll change device is constructed in the form of a turntable (130) and is arranged in the intermediate space between the two casting lines at a level between the two reducing stands (116-1, 116-2).
  2. Casting and rolling plant (100) according to claim 1, characterised by
    a casting bay (138) in which, inter alia, the moulds, the strip guides and the reducing stands of the two casting lines and a casting bay crane (190) are arranged; and
    a neighbouring bay (140), which adjoins the casting bay (138) in casting direction (R), similarly with a crane (142).
  3. Casting and rolling plant (100) according to claim 2, characterised in that the turntable (130) is so positioned between the two casting lines (110-1, 110-2) that at least a sub-region (132) of the turntable is accessible to the casting bay crane (190) or the crane (142) of the neighbouring bay.
  4. Casting and rolling plant (100) according to claim 2 or 3, characterised in that
    an intermediate deposit station (150) for the rolls, for example work rolls and backing rolls, of the first and second reducing stands (116-1, 116-2) is provided in the neighbouring bay (140) between the two casting lines (110-1, 110-2) and, as seen in casting direction (R), behind the turntable (130), preferably directly adjacent to the periphery thereof, and is accessible to the crane (142) of the neighbouring bay (140), wherein the crane (142) serves for delivery of new or overhauled rolls to and transport away of worn rolls from the intermediate deposit station.
  5. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    the turntable (130) is constructed to be rotatable about a stationary axis (134) of rotation.
  6. Casting and rolling plant (100) according to claim 5, characterised in that
    the first and second reducing stands are each arranged at the same level in the first and second casting lines so that the respective vertical centre planes (M1, M2) thereof coincide; and
    the turntable (130) is so arranged between the two casting lines that the axis (134) of rotation thereof lies in the coinciding centre planes (M1, M2) of the first and second reducing stands (116-1, 116-2).
  7. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    the radius (r) of the turntable (130) is of such a size that the turntable reaches by the periphery thereof up to the first and second reducing stands (116-1, 116-2).
  8. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    the first reducing stand (116-1) is arranged directly behind the outlet of the first strip guide (114-1) in casting direction (R) and the second reducing stand (116-2) is arranged directly behind the outlet of the second strip guide (114-2) in the casting direction (R).
  9. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    pulling and pushing equipment (160) is provided, for example in the form of a roll change locomotive or a hydraulic cylinder, for movement of the rolls out of the first or second reducing stand (116-1, 116-2) onto the turntable (130) or for movement of the rolls from the turntable into the first or second reducing stand or for movement of the rolls between the turntable (13) and the intermediate deposit station (150, wherein the pulling and pushing equipment (160) is preferably arranged on the turntable (130).
  10. Casting and rolling plant (100) according to claim 9, characterised in that
    the turntable (130) in the region of its axis (134) of rotation has an opening (136) or is formed to be tubular for the passage of energy lines or media lines to the pulling and pushing equipment (160).
  11. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    the turntable (130) has an upper plane with positions for reception of the work rolls and a lower plane with positions for reception of further rolls, for example backing rolls, from at least one of the two reducing stands.
  12. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    the first and second casting platforms (118-1) are constructed in the form of a common casting platform (118) which bridges over the first and second casting lines (110-1, 110-2) transversely to the casting direction (R).
  13. Casting and rolling plant (100) according to any one of the preceding claims,
    characterised in that
    the first and second casting lines (110-1, 110-2) are each constructed as a compact strip production plant.
  14. Method for demounting at least one of the used work rolls (310) from one of the two reducing stands (116-1, 116-2) of the casting and rolling plant (100) according to claim 4, comprising the following steps:
    14a) rotating the turntable (130) so that a free second position (P2) is present on the turntable in front of the first or second reducing stand (116-1, 116-2) for reception of the worn work rolls;
    14b) withdrawing the at least one worn work roll (310) with the help of the pulling and
    pushing equipment (160) from the first or second reducing stand onto the turntable (13) in the second position (P2);
    14c) rotating the turntable so that the second position (P2), which is occupied by the at least one worn working roll (310), is opposite the intermediate deposit station (150);
    14d) pulling or pushing the at least one worn work roll (310) from the turntable (130) onto the intermediate deposit station (150); and
    14e) transporting the worn work roll (310) away from the intermediate deposit station (150) by the crane (142) of the neighbouring bay (140) into a roll workshop; or
    alternatively to the steps 14d) and 14e), if a sub-region (150) of the turntable (130) is accessible to the casting bay crane or the crane of the neighbouring bay:
    14d') transporting the worn work rolls (310) away from the turntable (130) by the casting bay crane (190) or the crane (142) of the neighbouring bay.
  15. Method of installing at least one new work roll (310) in the reducing stand (116-1, 116-2) of the casting and rolling plant according to claim 4, comprising the following steps:
    15a) carrying out at least the steps 14a) and 14b), optionally also in addition the steps 14c) to 14e) or 14c) and 14d');
    15b) depositing the at least one new work roll (310) with the help of the crane of the neighbouring bay (140) on the intermediate deposit station (150);
    15c1) rotating the turntable (130) so that a first position (P1) for reception of the at least one new work roll (310) is opposite the intermediate deposit station (150); and
    15c2) pulling or pushing the at least one new work roll (310) with the help of the pushing and pulling equipment (160) from the intermediate deposit station until it is completely in the first position (P1) on the turntable;
    15d) rotating the turntable so that the first position, which is occupied by the at least one new work roll (310), is in front of the first or second reducing stand (116-1, 116-2), from which the at least one worn work roll was previously withdrawn;
    15e) pushing the at least one new work roll (310) with the help of the pushing and pulling equipment (160) into the reducing stand (116-1, 116-2); or
    alternatively to the steps 15b) - 15c2), if a sub-region of the turntable is accessible to the casting bay crane or the crane of the neighbouring bay:
    15b') rotating the turntable (130) so that a first position (P1) on the turntable for reception of the at least one new work roll (310) is accessible to the crane (142) of the rolling bay; and
    15c') depositing the at least one new work roll (310) with the help of the casting bay crane or the crane (142) of the neighbouring bay (140) on the first position on the turntable.
  16. Method of demounting worn backing rolls (320) from a reducing stand (116-1, 116-2) of a casting and rolling plant according to claim 4, comprising the following steps:
    16a) optionally: advance positioning of a backing roll support chair on the turntable (130);
    16b) rotating the turntable so that a free third position (P3) is present on the turntable in front of the first or second reducing stand (116-1, 116-2) for reception of the worn backing rolls;
    16c) withdrawing the lower backing roll (320-1) from the reducing stand into the third position (P3) on the turntable (130);
    16d) depositing the backing roll change chair on the worn lower backing roll (320-1) in the third position (P3);
    16e) moving the worn lower backing roll (320-1) together with the deposited backing roll change chair into the reducing stand (116-1, 116-2);
    16f) in the reducing stand: depositing the worn upper backing roll (320-2) on the backing roll change chair;
    16g) withdrawing the upper and lower backing rolls together with the backing roll change chair from the reducing stand to the third position (P3) on the turntable (130);
    16h) rotating the turntable (130) so that the third position is opposite the roll intermediate deposit station (150);
    16i) pushing or pulling the backing roll change chair together with the two backing rolls from the turntable onto the intermediate deposit station (150); and
    16j) transporting the upper backing roll (320-2), the backing roll change chair and the lower backing roll (320-1) in succession by the crane (142) of the rolling bay away from the intermediate deposit station; or
    alternatively to the steps 16h) - 16j), if a sub-region (150) of the turntable (130), is accessible to the casting bay crane or the crane of the neighbouring bay:
    16i') transporting the upper backing roll (320-2), the backing roll change chair and the lower backing roll (320-1) in succession by the casting bay crane (190) or the crane (142) of the neighbouring bay (140) away to the roll workshop.
  17. Method according to claim 16, characterised in that
    step 16c) and the succeeding steps are carried out only after the two work rolls (310) have been demounted beforehand, for example in accordance with the method according to claim 14, from the reducing stand (116-1, 116-2).
  18. Method according to claim 16 or 17, characterised in that
    if the backing roll change chair has already been placed at the third position (P3) on the turntable (130) in the course of step 16a) then prior to carrying out step 16c) it is raised and after step 16c) has been carried out it is lowered in the course of step 16d) onto the worn lower backing roll.
  19. Method of installing new backing rolls (320) in a reducing stand (116-1, 116-2) of a casting and rolling plant (100) according to claim 4, comprising the following steps:
    19a) transporting a new lower backing roll (320-1) onto the intermediate deposit station (150) with the help of the crane (142) of the neighbouring bay;
    19b) depositing a backing roll change chair on the new lower backing roll (320-1) on the intermediate deposit station (150) with the help of the crane (142) of the neighbouring bay;
    19c) depositing a new upper backing roll (320-2) on the backing roll change chair with the help of the crane (142) of the neighbouring bay;
    19d) pulling or pushing the backing roll change chair together with the lower and upper backing rolls from the intermediate deposit station to a third position (P3) on the turntable (130);
    19e) rotating the turntable so that the third position (P3) is present in front of the first or second reducing stand (116-1. 116-2);
    19f) pushing the backing roll change chair together with the lower and upper backing rolls (320-1, 320-2) into the reducing stand (116-1, 116-2);
    19g) raising the upper new backing roll from the backing roll change chair and suspending the upper backing roll in the reducing stand;
    19h) withdrawing the lower backing roll (320-1) together with the deposited backing roll change chair from the reducing stand (116-1, 116-2);
    19i) raising the backing roll change chair from the lower backing roll and depositing the backing roll change chair on the turntable (130);
    19j) pushing the new lower backing roll (320-1) into and installing it in the reducing stand; or
    alternatively to steps 19a) - 19d), if a sub-region of the turntable is accessible to the casting bay crane or the crane of the neighbouring bay:
    19a') transporting a new lower backing roll (320-1) with the help of the casting bay crane or the crane of the neighbouring bay onto the turntable (130);
    19b') depositing a backing roll change chair on the new lower backing roll on the turntable with the help of the casting bay crane or the crane of neighbouring bay; and
    19c') depositing a new upper backing roll (320-2) on the backing roll change chair with the help of the casting bay crane or the crane of the neighbouring bay.
  20. Method according to claim 19, characterised in that
    the installation of the new backing roll in accordance with the method according to claim 19 is carried out only after the worn work rolls (310) and the worn backing rolls have been previously demounted from the reducing stand, for example in accordance with the method according to claims 14 and 16.
EP14701298.3A 2013-01-14 2014-01-08 Casting/rolling installation and method for dismantling and installing rolls in a reducing stand of the casting/rolling installation Not-in-force EP2943296B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013200438 2013-01-14
DE102013224633.1A DE102013224633A1 (en) 2013-01-14 2013-11-29 Casting rolling mill and method for removing and installing rolls in a reduction stand of the casting rolling mill
PCT/EP2014/050178 WO2014108413A1 (en) 2013-01-14 2014-01-08 Casting/rolling installation and method for dismantling and installing rolls in a reducing stand of the casting/rolling installation

Publications (2)

Publication Number Publication Date
EP2943296A1 EP2943296A1 (en) 2015-11-18
EP2943296B1 true EP2943296B1 (en) 2017-05-10

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Country Link
US (1) US9700938B2 (en)
EP (1) EP2943296B1 (en)
CN (1) CN105142811B (en)
DE (1) DE102013224633A1 (en)
WO (1) WO2014108413A1 (en)

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Publication number Priority date Publication date Assignee Title
IT201700032906A1 (en) 2017-03-24 2018-09-24 Danieli Off Mecc APPARATUS AND METHOD OF CHANGE OF DRIVE UNITS IN A CONTINUOUS CASTING MACHINE
WO2021115900A1 (en) * 2019-12-11 2021-06-17 Sms Group Gmbh Modular rolling train, particularly hot rolling train, preferably in conjunction with an upstream casting facility
CN114433630B (en) * 2021-12-22 2023-08-29 广西柳州钢铁集团有限公司 Step knockout method
CN114535305B (en) * 2021-12-22 2024-01-19 太原重工股份有限公司 Auxiliary device and method for roll replacement of roll stand

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CN105142811B (en) 2018-01-09
US20150343524A1 (en) 2015-12-03
CN105142811A (en) 2015-12-09
EP2943296A1 (en) 2015-11-18
DE102013224633A1 (en) 2014-07-17
WO2014108413A1 (en) 2014-07-17
US9700938B2 (en) 2017-07-11

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