EP0321733A1 - Production of hot-rolled strip from a continuously cast material - Google Patents

Production of hot-rolled strip from a continuously cast material Download PDF

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Publication number
EP0321733A1
EP0321733A1 EP88119749A EP88119749A EP0321733A1 EP 0321733 A1 EP0321733 A1 EP 0321733A1 EP 88119749 A EP88119749 A EP 88119749A EP 88119749 A EP88119749 A EP 88119749A EP 0321733 A1 EP0321733 A1 EP 0321733A1
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EP
European Patent Office
Prior art keywords
winding
heat
primary material
insulated
plant
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.)
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Application number
EP88119749A
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German (de)
French (fr)
Inventor
Friedrich Dipl.-Ing. Klute
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Fried Krupp AG
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Fried Krupp AG
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Publication of EP0321733A1 publication Critical patent/EP0321733A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/68—Furnace coilers; Hot coilers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007—Cutting or shearing the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a system according to the preamble of claim 3 for performing this method.
  • the system part for continuous casting can have a vertical or horizontal outlet or can be provided with a so-called band caster. If the continuously cast primary material cannot be wound due to its thickness, the continuous casting system must be followed by a reducing scaffold.
  • the rolling mill downstream of the winding device can e.g. be designed as a tandem mill or as a Steckel mill.
  • the smallest technically feasible rolling speed in hot rolling is roughly a power of ten higher than the casting speed of a continuous caster.
  • a length corresponding to a predeterminable coil weight is therefore cut off from the continuously continuously cast primary material and, after passing through or staying in or in a heat-insulated room, is fed to a rolling mill or a rolling mill.
  • the winding device is arranged at a certain distance from the cross-cut scissors, in order to wind up the not yet wound part of the pre-strip accelerated after severing, and thus time to convert the finished wound bundle from the winding device into the unwinder and thus gaining space for the primary material following at the casting speed.
  • This distance between the cross-cutting shear and the reel is not surrounded by an oven, so that different cooling conditions can occur with the rolled up sliver.
  • the invention has for its object to simplify the handling of the coil wound from the primary material. In addition, it should be possible to even out and, if necessary, influence the temperature of the preliminary strip immediately after passing through the cross-cutting shears.
  • the object on which the invention is based is achieved in that the primary material is processed from the same place at which it was wound up without the federal government changing location. A complex implementation of the coiled coil can thus be omitted.
  • the object is achieved on the one hand according to claim 5 in that only a single winding and unwinding device is present between the cross-cutting shear and the rolling mill, which, according to claim 6, can be preceded by a heat-insulated route conversion in a further embodiment.
  • the winding device can also be located in a heat-insulated conversion, which in turn can form a structural unit with the route conversion.
  • the object underlying the invention can also be achieved in terms of the system in that the winding arrangement consists of two mutually vertically offset winding and unwinding devices with thermally insulated conversion. While a bundle is being wound at a slow casting speed on one of the two winding devices, the bundle on the respective other winding device can be unwound at a high rolling speed. After winding up a bundle, the other winding device is always ready to wind up the next bundle. A buffer section is therefore not necessary with this solution, which means that the overall system is relatively short.
  • the system according to FIGS. 1 and 2 has - arranged one behind the other - a continuous caster 1, a cross-cut shear 2, a section furnace 3, a winding device 5 located in a further furnace space 4 and a rolling mill or rolling mill 6 with subsequent winding reel 7 to form a bundle 8 from the finished rolled strip 9.
  • a suitable winding device for winding and unwinding is e.g. in the DE-Z. "Stahl u. Eisen" 103 (1983) 7, page 296.
  • the raw material 10 leaves the continuous casting plant 1 with a thickness of, for example, 50 mm.
  • the cross-cut shear 2 can be preceded by a reduction frame 11 (indicated by dash-dotted lines).
  • the raw material 10 runs through the stretch furnace 3 to equalize and possibly correct its temperature and is in the winding device 5 after formation of a first Internal winding wound into a bundle 12.
  • the cross-cutting shear 2 is actuated and the speed of the drive rollers of the winding device 5 is accelerated, so that the bundle 12 of raw material 10 is wound up and the remaining one is accelerated The rest is withdrawn correspondingly quickly from line oven 3. In the meantime, the beginning of the cast pre-strip 10 moves at (low) casting speed through the stretch furnace 3 in the direction of the winding device 5 (cf. FIG. 2).
  • the end of the wound raw material 10 is entered as the beginning in the rolling mill 6, flat rolled to the finished strip 9 and wound into a bundle 8 in the winding reel 7.
  • the winding device 5 Since the rolling speed is roughly a power of ten greater than the casting speed, the winding device 5 is already empty or free before the beginning of the subsequent sliver 10 arrives there, and can be prepared or set for winding up a new bundle 12.
  • the rolling mill 6 is designed as a tandem mill with a plurality of four-high mill stands 13 arranged one behind the other.
  • the rolling mill 6 can also be designed, for example, as a Steckel rolling mill, as disclosed, for example, in DE-OS 32 41 745.
  • the primary material 10 in turn comes from a continuous casting installation 1 and is guided through a cross-cutting shear 20.
  • These scissors have a pair of knives 21, 22 that can be moved up and down and that cooperates with a fixed counter knife or knife part 23.
  • the fixed knife part 23 is followed by guide and support elements 24, 25, which alternately guide the primary material 10 to an upper and a lower winding device 26, 27, each of which is accommodated in an oven space 28 or 29, possibly offset horizontally to one another .
  • a rolling train 6 is provided, as has already been described in connection with FIG. 2.
  • the raw material 10 is passed into the upper winding device 26 and wound there into a bundle 12 ', while the bundle 12' lying in the lower winding device 27 is drawn off by the rolling train 6.
  • simple heat-insulated conversions can also be used instead of the section furnace 3 and the furnace spaces 4, 28, 29 in small systems.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)

Abstract

To simplify the handling of a coil (12) of continuously cast feed- stock (10) of a type suitable for coiling, it is proposed that the coil (12) be uncoiled from the same point (5) at which it was coiled, without a change of location. For this purpose, it is possible to use either a single coiling apparatus (5) with an upstream buffer section (3) or two coiling apparatuses offset vertically relative to one another. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Anspruchs 1 und eine Anlage nach dem Oberbegriff des Anspruchs 3 zum Durchführen dieses Verfahrens. Dabei kann der Anlagenteil zum Stranggießen einen vertikalen oder horizontalen Auslauf aufweisen oder mit einem sog. Bandcaster versehen sein. Soweit das stranggegossene Vormaterial wegen seiner Dicke nicht wickelbar ist, ist der Stranggußanlage ein Reduziergerüst nachzuschalten. Das der Wickelvorrichtung nachgeschaltete Walzwerk kann z.B. als Tandem-­oder als Steckel-Walzstraße ausgebildet sein.The invention relates to a method according to the preamble of claim 1 and a system according to the preamble of claim 3 for performing this method. The system part for continuous casting can have a vertical or horizontal outlet or can be provided with a so-called band caster. If the continuously cast primary material cannot be wound due to its thickness, the continuous casting system must be followed by a reducing scaffold. The rolling mill downstream of the winding device can e.g. be designed as a tandem mill or as a Steckel mill.

Die kleinste technisch durchführbare Walzgeschwindigkeit beim Warmwalzen ist um überschläglich eine Zehnerpotenz größer als die Gießgeschwindigkeit einer Stranggießanlage. Von dem kontinuierlich stranggegossenen Vormaterial wird deshalb jeweils eine einem vorgebbaren Bundgewicht entsprechende Länge abgetrennt und nach dem Durchlaufen bzw. Aufenthalt durch bzw. in einem wärmeisolierten Raum je für sich einem Walzwerk bzw. einer Walzstraße zugeführt.The smallest technically feasible rolling speed in hot rolling is roughly a power of ten higher than the casting speed of a continuous caster. A length corresponding to a predeterminable coil weight is therefore cut off from the continuously continuously cast primary material and, after passing through or staying in or in a heat-insulated room, is fed to a rolling mill or a rolling mill.

Aus der DE-OS 32 41 745 ist ein gattungsgemäßes Verfahren und eine entsprechende Anlage bekannt, bei dem bzw. bei der das stranggegossene Vormaterial in einer ersten Wickelvorrichtung (Aufwickelvorrichtung) zu einem Bund aufgewickelt, als Bund in eine zweite Wickelvorrichtung (Abwickelvorrichtung) übergeben und von dort unter Abwickeln in eine Walzstraße gegeben wird. Das Umsetzen des Bundes erfordert eine Hub- und Transporteinrichtung mit entsprechendem Investitionsaufwand. Das Umsetzen erfordert zudem Zeit, in der dem heißen Bund Wärme verloren geht. Nach einer in der angegebenen DE-OS offenbarten Ausführungsform wird das heiße aufgewickelte Bund zwar in einen Zwischenspeicherofen gegeben und von dort zur Abwickelvorrichtung weiter transportiert. Dies erfordert aber einen weiteren Umsetzvorgang des heißen Bundes und einen erhöhten Aufwand für die Transporteinrichtung innerhalb des Ofens.From DE-OS 32 41 745 a generic method and a corresponding system is known, in which or in which the continuously cast primary material is wound into a bundle in a first winding device (winding device), as a bundle in a second winding device (Unwinding device) and from there it is unrolled into a rolling mill. The implementation of the federal government requires a lifting and transport facility with the corresponding investment. The implementation also takes time in which the hot bundle is lost heat. According to one embodiment disclosed in the cited DE-OS, the hot wound bundle is put into an intermediate storage oven and transported from there to the unwinding device. However, this requires a further transfer operation of the hot coil and an increased effort for the transport device within the furnace.

Um die Gießhitze weitgehend aufrechtzuerhalten, wird in der angeführten DE-OS weiter vorgeschlagen, die Auf- und die Abwickelvorrichtung jeweils in einem gemeinsamen Ofen unterzubringen. Dabei muß das Bund aber innerhalb des Ofens umgesetzt werden, wozu wegen der heißen Ofenatmosphäre ein erhöhter mechanischer Aufwand erforderlich ist.In order to largely maintain the casting heat, it is further proposed in the cited DE-OS to accommodate the winding and unwinding devices in a common oven. Here, however, the collar must be implemented within the furnace, for which an increased mechanical effort is required because of the hot furnace atmosphere.

Bei der aus der angeführten DE-OS bekannten Anlage ist die Aufwickelvorrichtung in einer gewissenen Entfernung von der Querteilschere angeordnet, um den noch nicht aufgewickelten Teil des Vorbandes nach dem Durchtrennen beschleunigt aufwickeln und so Zeit zum Umsetzen des fertiggewickelten Bundes aus der Aufwickelvorrichtung in die Abwickelvorrichtung und damit Platz für das mit Gießgeschwindigkeit nachfolgende Vormaterial zu gewinnen. Diese Strecke zwischen der Querteilschere und der Aufwickelhaspel ist dabei nicht von einem Ofen umgeben, so daß es bei dem aufgewickelten Vorband zu unterschiedlichen Abkühlverhältnissen kommen kann.In the system known from the cited DE-OS, the winding device is arranged at a certain distance from the cross-cut scissors, in order to wind up the not yet wound part of the pre-strip accelerated after severing, and thus time to convert the finished wound bundle from the winding device into the unwinder and thus gaining space for the primary material following at the casting speed. This distance between the cross-cutting shear and the reel is not surrounded by an oven, so that different cooling conditions can occur with the rolled up sliver.

Daneben ist es bekannt, ein stranggegossenes Vorband in gestrecktem, geraden Zustand durch einen Ofen zu führen, wobei das Vorband von dem nachgegossenen Vormaterial abgetrennt wird, ehe bzw. sobald es in die Walzanlage gelangt. Bei großen Bundgrößen und geringer Dicke des Vormaterials ergibt sich aber wegen seines geraden Zustandes eine sehr große Ofenlänge, die außerordentlich unwirtschaftlich ist.In addition, it is known to pass a continuously cast pre-strip in a stretched, straight state through an oven, the pre-strip being separated from the re-cast pre-material before or as soon as it reaches the rolling mill. In the case of large bundle sizes and a small thickness of the primary material, however, because of its straight state, the furnace length is very long and extremely uneconomical.

Der Erfindung liegt die Aufgabe zugrunde, die Handhabung des aus dem Vormaterial aufgewickelten Bundes zu vereinfachen. Darüber hinaus soll die Temperatur des Vorbandes unmittelbar nach dem Passieren der Querteilschere vergleichmäßigt und ggf. beeinflußt werden können.The invention has for its object to simplify the handling of the coil wound from the primary material. In addition, it should be possible to even out and, if necessary, influence the temperature of the preliminary strip immediately after passing through the cross-cutting shears.

Die der Erfindung zugrundeliegende Aufgabe wird dadurch gelöst, daß das Vormaterial ohne Ortswechsel des Bundes von derselben Stelle abgewickelt wird, an der es aufgewickelt worden ist. Ein aufwendiges Umsetzen des aufgewickelten Bundes kann somit entfallen.The object on which the invention is based is achieved in that the primary material is processed from the same place at which it was wound up without the federal government changing location. A complex implementation of the coiled coil can thus be omitted.

Zur Vergleichmäßigung der Temperatur des Vormaterials ist nach Anspruch 2 vorgesehen, dieses spätestens beim Aufwickeln in einem wärmeisolierten Raum einzuführen. Soweit nur eine einzige Wickelvorrichtung vorhanden ist, wird nach Anspruch 3 vorgeschlagen, den wärmeisolierten Raum streckenförmig zu gestalten. Dadurch wird vermieden, daß das mit Gießgeschwindigkeit nachfolgende Material nicht zu Stücken zerschnitten und in die Gießanlage zurückgeführt werden muß. Dabei wird die Länge der wärmeisolierten Strecke nicht wie bei dem bekannten Streckenofen zur Aufnahme von gestrecktem Vormaterial vom Bundgewicht, sondern im wesentlichen lediglich von der mit hoher Geschwindigkeit erfolgenden Abwalzzeit bestimmt.To even out the temperature of the primary material according to claim 2, it is introduced at the latest when winding in a thermally insulated room. As far as only a single winding device is available, it is proposed according to claim 3 to make the heat-insulated space stretch. This avoids that the material following at the casting speed does not have to be cut into pieces and returned to the casting installation. The length of the heat-insulated section is not as in the known section furnace for receiving stretched primary material from Coil weight, but essentially only determined by the rolling time at high speed.

Anlagenmäßig wird die Aufgabe einerseits nach Anspruch 5 dadurch gelöst, daß zwischen der Querteilschere und dem Walzwerk nur eine einzige Auf- und Abwickelvorrichtung vorhanden ist, der nach Anspruch 6 in weiterer Ausgestaltung eine wärmeisolierte Streckenumbauung vorgeschaltet sein kann. Nach Anspruch 7 kann sich auch die Wickelvorrichtung in einer wärmeisolierten Umbauung befinden, die wiederum mit der Streckenumbauung eine Baueinheit bilden kann.In terms of system, the object is achieved on the one hand according to claim 5 in that only a single winding and unwinding device is present between the cross-cutting shear and the rolling mill, which, according to claim 6, can be preceded by a heat-insulated route conversion in a further embodiment. According to claim 7, the winding device can also be located in a heat-insulated conversion, which in turn can form a structural unit with the route conversion.

Nach Anspruch 8 kann die der Erfindung zugrundeliegende Aufgabe anlagenmäßig zum anderen auch dadurch gelöst werden, daß die Wickelanordnung aus zwei zueinander höhenversetzt angeordneten Auf- und Abwickelvorrichtungen mit wärmeisolierter Umbauung besteht. Während ein Bund mit langsamer Gießgeschwindigkeit auf einer der beiden Wickelvorrichtungen aufgewickelt wird, kann das auf der jeweils anderen Wickelvorrichtung befindliche Bund mit hoher Walzgeschwindigkeit abgewickelt werden. Nach dem Aufwickeln eines Bundes steht somit immer die jeweils andere Wickelvorrichtung bereits wieder zum Aufwickeln des jeweils nächsten Bundes bereit. Eine Pufferstrecke ist bei diesem Lösungsvorschlag somit nicht nötig, wodurch man mit einer relativ geringen Länge der Gesamtanlage auskommt.According to claim 8, the object underlying the invention can also be achieved in terms of the system in that the winding arrangement consists of two mutually vertically offset winding and unwinding devices with thermally insulated conversion. While a bundle is being wound at a slow casting speed on one of the two winding devices, the bundle on the respective other winding device can be unwound at a high rolling speed. After winding up a bundle, the other winding device is always ready to wind up the next bundle. A buffer section is therefore not necessary with this solution, which means that the overall system is relatively short.

In Anspruch 9 ist eine vorteilhafte Ausbildung einer Querteilschere beschrieben, die den durch das Abtrennen gegebenen Neuanfang des Vormaterials in einfacher Weise in Richtung der jeweils leeren Wickelvorrichtung leitet.In claim 9, an advantageous embodiment of a cross-cutting shear is described, which the new beginning given by the separation of the starting material in a simple manner in the direction of the empty Winding device conducts.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert. Es zeigen:

  • Fig. 1 den - in Vorschubrichtung gesehen - vorderen Teil einer Anlage mit einer einzigen Wickelvorrichtung und einem vorgeschalteten Streckenofen während des Aufwickelns des Vormaterials zu einem Bund,
  • Fig. 2 den hinteren Teil der Anlage gemäß Fig. 1 beim Abwickeln des Bundes und
  • Fig. 3 eine Anlage mit zwei Wickelvorrichtungen.
Embodiments of the invention are shown in the drawing and are explained in more detail below. Show it:
  • 1 the - seen in the feed direction - the front part of a system with a single winding device and an upstream line furnace during the winding of the primary material into a bundle,
  • Fig. 2 shows the rear part of the system shown in FIG. 1 when unwinding the federal government and
  • Fig. 3 shows a system with two winding devices.

Die Anlage gemäß den Fig. 1 und 2 weist - hintereinander angeordnet - eine Stranggießanlage 1 ein Querteilschere 2, einen Streckenofen 3, eine in einem weiteren Ofenraum 4 befindliche Wickelvorrichtung 5 und eine Walzstraße bzw. ein Walzwerk 6 mit anschließender Aufwickelhaspel 7 zur Bildung eines Bundes 8 aus dem fertiggewalzten Band 9 auf. Eine zum Auf- und Abwickeln geeignete Wickelvorrichtung ist z.B. in der DE-Z. "Stahl u. Eisen" 103(1983)7, Seite 296 beschrieben.The system according to FIGS. 1 and 2 has - arranged one behind the other - a continuous caster 1, a cross-cut shear 2, a section furnace 3, a winding device 5 located in a further furnace space 4 and a rolling mill or rolling mill 6 with subsequent winding reel 7 to form a bundle 8 from the finished rolled strip 9. A suitable winding device for winding and unwinding is e.g. in the DE-Z. "Stahl u. Eisen" 103 (1983) 7, page 296.

Das Vormaterial 10 verläßt die Stranggußanlage 1 mit einer Dicke von beispielsweise 50 mm. Bei größeren Dicken des Vormaterials kann der Querteilschere 2 ein (strichpunktiert angedeutetes) Reduziergerüst 11 vorgeschaltet sein. Das Vormaterial 10 läuft zur Vergleichmäßigung und ggf. Korrektur seiner Temperatur durch den Streckenofen 3 und wird in der Wickelvorrichtung 5 nach Bildung einer ersten Innenwindung zu einem Bund 12 aufgewickelt. Wenn der Teil des Vormaterials 10, der die Querteilschere 2 passiert hat, dem Gewicht eines fertigen Bundes 8 entspricht, wird die Querteilschere 2 betätigt und die Drehzahl der Antriebsrollen der Wickelvorrichtung 5 beschleunigt, so daß das Bund 12 aus Vormaterial 10 beschleunigt aufgewickelt und der verbleibende Rest entsprechend schnell aus dem Streckenofen 3 abgezogen wird. Derweil bewegt sich der Anfang des nachgegossenen Vorbandes 10 mit (niedriger) Gießgeschwindigkeit durch den Streckenofen 3 in Richtung auf die Wickelvorrichtung 5 (vgl. Fig. 2).The raw material 10 leaves the continuous casting plant 1 with a thickness of, for example, 50 mm. In the case of greater thicknesses of the primary material, the cross-cut shear 2 can be preceded by a reduction frame 11 (indicated by dash-dotted lines). The raw material 10 runs through the stretch furnace 3 to equalize and possibly correct its temperature and is in the winding device 5 after formation of a first Internal winding wound into a bundle 12. If the part of the primary material 10 which has passed the cross-cutting shear 2 corresponds to the weight of a finished bundle 8, the cross-cutting shear 2 is actuated and the speed of the drive rollers of the winding device 5 is accelerated, so that the bundle 12 of raw material 10 is wound up and the remaining one is accelerated The rest is withdrawn correspondingly quickly from line oven 3. In the meantime, the beginning of the cast pre-strip 10 moves at (low) casting speed through the stretch furnace 3 in the direction of the winding device 5 (cf. FIG. 2).

Nach dem Beenden des Aufwickelvorgangs eines Bundes 12 wird das Ende des aufgewickelten Vormaterials 10 als Anfang in die Walzstraße 6 eingegeben, zum Fertigband 9 flachgewalzt und in der Aufwickelhaspel 7 zu einem Bund 8 aufgewickelt.After the winding process of a bundle 12 has ended, the end of the wound raw material 10 is entered as the beginning in the rolling mill 6, flat rolled to the finished strip 9 and wound into a bundle 8 in the winding reel 7.

Da die Walzgeschwindigkeit überschläglich um eine Zehnerpotenz größer ist als die Gießgeschwindigkeit, ist die Wickelvorrichtung 5 bereits wieder leer bzw. frei, bevor der Beginn des nachfolgenden Vorbandes 10 dort ankommt, und kann zum Aufwickeln eines neuen Bundes 12 vorbereitet bzw. eingestellt werden.Since the rolling speed is roughly a power of ten greater than the casting speed, the winding device 5 is already empty or free before the beginning of the subsequent sliver 10 arrives there, and can be prepared or set for winding up a new bundle 12.

In dem dargestellten Ausführungsbeispiel ist die Walzstraße 6 als Tandemstraße mit mehreren hintereinander angeordneten Quarto-Walzgerüsten 13 ausgebildet. Die Walzstraße 6 kann aber auch z.B. als Steckel-Walzwerk ausgebildet sein, wie es beispielsweise in der DE-OS 32 41 745 offenbart ist.In the exemplary embodiment shown, the rolling mill 6 is designed as a tandem mill with a plurality of four-high mill stands 13 arranged one behind the other. The rolling mill 6 can also be designed, for example, as a Steckel rolling mill, as disclosed, for example, in DE-OS 32 41 745.

Bei dem in Fig. 3 dargestellten Ausführungsbeispiel kommt das Vormaterial 10 wiederum aus einer Stranggießanlage 1 und wird durch eine Querteilschere 20 geführt. Diese Schere weist ein auf- und abbewegbares Messerpaar 21, 22 auf, das mit einem feststehenden Gegenmesser oder Messerteil 23 zusammenarbeitet. Dem feststehenden Messerteil 23 sind Führungs- und Stützelemente 24, 25 nachgeordnet, die das Vormaterial 10 abwechselnd zu einer oberen und einer unteren Wickelvorrichtung 26, 27 führen, die - ggf. auch horizontal zueinander versetzt - jeweils in einem Ofenraum 28 bzw. 29 untergebracht sind. Im Anschluß an die beiden Wickelvorrichtungen 26, 27 ist eine Walzstraße 6 vorgesehen, wie sie bereits im Zusammenhang mit der Fig. 2 beschrieben ist.In the exemplary embodiment shown in FIG. 3, the primary material 10 in turn comes from a continuous casting installation 1 and is guided through a cross-cutting shear 20. These scissors have a pair of knives 21, 22 that can be moved up and down and that cooperates with a fixed counter knife or knife part 23. The fixed knife part 23 is followed by guide and support elements 24, 25, which alternately guide the primary material 10 to an upper and a lower winding device 26, 27, each of which is accommodated in an oven space 28 or 29, possibly offset horizontally to one another . Following the two winding devices 26, 27, a rolling train 6 is provided, as has already been described in connection with FIG. 2.

Bei dem in Fig. 3 dargestellten Betriebszustand wird das Vormaterial 10 in die obere Wickelvorrichtung 26 geleitet und dort zu einem Bund 12′ aufgewickelt, während das in der unteren Wickelvorrichtung 27 liegende Bund 12˝ durch die Walzstraße 6 abgezogen wird.In the operating state shown in Fig. 3, the raw material 10 is passed into the upper winding device 26 and wound there into a bundle 12 ', while the bundle 12' lying in the lower winding device 27 is drawn off by the rolling train 6.

Abweichend von den beschriebenen Ausführungsformen können statt des Streckenofens 3 und der Ofenräume 4, 28, 29 bei kleinen Anlagen auch einfache wärmeisolierte Umbauungen eingesetzt werden.In a departure from the described embodiments, simple heat-insulated conversions can also be used instead of the section furnace 3 and the furnace spaces 4, 28, 29 in small systems.

Claims (10)

1. Verfahren zum Herstellen von warmgewalztem Band aus wickelbarem stranggegossenen Vormaterial,
wobei das Vormaterial nach vollständiger Erstarrung mit Gießgeschwindigkeit zu einem Bund aufgewickelt, nach Erreichen des zulässigen bzw. gewünschten Bundgewichtes von dem nachgegossenen Vormaterial abgetrennt, beschleunigt aufgewickelt und nach dem vollständigen Aufwickeln unter Abwickeln in ein Walzwerk eingegeben und dort gewalzt wird,
dadurch gekennzeichnet,
daß das Vormaterial (10) ohne Ortswechsel des Bundes (12; 12′, 12˝) von derselben Stelle (5; 27, 28) abgewickelt wird, an der es aufgewickelt worden ist.1. A process for producing hot-rolled strip from windable continuously cast starting material,
the primary material being wound into a bundle at the casting speed after complete solidification, being separated from the cast-in primary material after reaching the permissible or desired bundle weight, being wound up at an accelerated rate, and being fed into a rolling mill and being rolled there after being completely wound up,
characterized,
that the primary material (10) without changing the federal government (12; 12 ', 12˝) from the same location (5; 27, 28) is processed at which it was wound up. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Vormaterial (10) spätestens beim Aufwickeln in einen wärmeisolierten Raum (3; 28, 29) eintritt.2. The method according to claim 1, characterized in that the primary material (10) occurs at the latest when winding in a heat-insulated space (3; 28, 29). 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das Vormaterial (10) vor dem Aufwickeln eine wärmeisolierte Strecke (3) durchläuft.3. The method according to claim 2, characterized in that the primary material (10) passes through a heat-insulated section (3) before winding. 4. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß dem Vormaterial (10) in dem wärmeisolierten Raum (28, 29) bzw. der wärmeisolierten Strecke (3) Wärme zugeführt wird.4. The method according to claim 2 or 3, characterized in that the primary material (10) in the heat-insulated space (28, 29) or the heat-insulated section (3) is supplied with heat. 5. Anlage zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 4, bestehend aus einer Stranggießanlage und ggf. einem Reduziergerüst, einer Querteilschere, einer Wickelanordnung und einem Walzwerk, dadurch gekennzeichnet, daß zwischen der Querteilschere (2) und dem Walzwerk (6) eine einzige Auf- und Abwickelvorrichtung (5) vorhanden ist.5. Plant for carrying out the method according to claims 1 to 4, consisting of a continuous casting plant and possibly a reducing stand, a cross-cutting shear, a winding arrangement and a rolling mill, characterized in that between the cross-cutting shear (2) and the rolling mill (6) one only winding and unwinding device (5) is present. 6. Anlage nach Anspruch 5, dadurch gekennzeichnet, daß der Wickelvorrichtung (5) eine wärmeisolierte Streckenumbauung (3) vorgeschaltet ist.6. Plant according to claim 5, characterized in that the winding device (5) is preceded by a thermally insulated section conversion (3). 7. Anlage nach Anspruch 5, dadurch gekennzeichnet, daß sich die Wickelvorrichtung (5) in einer wärmeisolierten Umbauung (4) befindet.7. Plant according to claim 5, characterized in that the winding device (5) is in a heat-insulated enclosure (4). 8. Anlage zur Durchführung des Verfahrens nach den Ansprüchen 1 bis 4, bestehend aus einer Stranggießanlage und ggf. einem Reduziergerüst, einer Querteilschere, einer Wickelanordnung und einem Walzwerk, dadurch gekennzeichent, daß die Wickelanordnung aus zwei zueinander höhenversetzt angeordneten Auf- und Abwickelvorrichtungen (26, 27) mit wärmeisolierter Umbauung (28, 29) besteht.8. Plant for carrying out the method according to claims 1 to 4, consisting of a continuous casting plant and possibly a reducing scaffold, a cross-cut shear, a winding arrangement and a rolling mill, characterized in that the winding arrangement consists of two winding and unwinding devices (26 , 27) with heat-insulated conversion (28, 29). 9. Anlage nach Anspruch 8, dadurch gekennzeichnet, daß die Querteilschere (20) ein auf- und abbewegbares Messerpaar (21, 22) und ein - in Vorschubrichtung gesehen - nachgeschaltetes feststehendes Gegenmesser (23) aufweist, dem zu den Wickelvorrichtungen (26, 27) weisende Führungselemente (24, 25) nachgeordnet sind.9. Plant according to claim 8, characterized in that the cross-cutting shear (20) has a pair of blades which can be moved up and down (21, 22) and a - seen in the feed direction - downstream fixed counter knife (23) to which the winding devices (26, 27 ) pointing guide elements (24, 25) are arranged downstream. 10. Anlage nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die wärmeisolierte Umbauung (3; 28, 29) mit Heizmitteln versehen ist.10. Plant according to one of claims 6 to 9, characterized in that the heat-insulated enclosure (3; 28, 29) is provided with heating means.
EP88119749A 1987-12-18 1988-11-26 Production of hot-rolled strip from a continuously cast material Withdrawn EP0321733A1 (en)

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DE3743057 1987-12-18
DE19873743057 DE3743057C1 (en) 1987-12-18 1987-12-18 Process and plant for producing hot-rolled strip from continuously cast starting material

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EP0576890A1 (en) * 1992-06-30 1994-01-05 DANIELI &amp; C. OFFICINE MECCANICHE S.p.A. Assembly to wind-unwind thin slabs
WO1994029042A1 (en) * 1993-06-04 1994-12-22 Giovanni Arvedi Interconnecting unit between at least one line for hot processing of steel flat products such as thin slabs or strips and a finishing rolling mill downstream
EP0647485A1 (en) * 1993-10-08 1995-04-12 MANNESMANN Aktiengesellschaft Device for winding-up and winding-off alternately strip-shaped material
EP0659503A2 (en) * 1993-12-27 1995-06-28 Hitachi, Ltd. Continuous casting apparatus and continuous casting system
WO1996032509A1 (en) * 1995-04-13 1996-10-17 Voest-Alpine Industrieanlagenbau Gmbh Hot-rolled strip reel furnace
EP0904861A1 (en) * 1997-09-11 1999-03-31 Nkk Corporation Method of producing thin hot rolled steel sheet, and apparatus to carry out the method
AT405028B (en) * 1996-01-31 1999-04-26 Voest Alpine Ind Anlagen METHOD FOR REVERSING ROLLING A STRIP AND DEVICE FOR CARRYING OUT THE METHOD
EP0916415A1 (en) * 1997-04-04 1999-05-19 Kawasaki Steel Corporation Heavy unit weight hot rolling method for sheet bars, and steel mill equipment therefor
WO2006046266A1 (en) * 2004-10-28 2006-05-04 Giovanni Arvedi Process and production line for manufacturing hot ultrathin steel strips with two casting lines for a single endless rolling line

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WO1991009694A1 (en) * 1989-12-29 1991-07-11 Stelco Inc. Thin material handling system for use in downcoilers and the like
NL1000693C2 (en) * 1995-06-29 1996-12-31 Hoogovens Staal Bv Device for manufacturing a steel strap.
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EP0576890A1 (en) * 1992-06-30 1994-01-05 DANIELI &amp; C. OFFICINE MECCANICHE S.p.A. Assembly to wind-unwind thin slabs
US5433264A (en) * 1992-06-30 1995-07-18 Danieli & C. Officine Meccaniche Spa. Assembly to wind-unwind thin slabs
WO1994029042A1 (en) * 1993-06-04 1994-12-22 Giovanni Arvedi Interconnecting unit between at least one line for hot processing of steel flat products such as thin slabs or strips and a finishing rolling mill downstream
EP0647485A1 (en) * 1993-10-08 1995-04-12 MANNESMANN Aktiengesellschaft Device for winding-up and winding-off alternately strip-shaped material
EP0659503A2 (en) * 1993-12-27 1995-06-28 Hitachi, Ltd. Continuous casting apparatus and continuous casting system
EP0659503A3 (en) * 1993-12-27 1995-08-02 Hitachi Ltd
CN1048434C (en) * 1993-12-27 2000-01-19 株式会社日立制作所 Continuous casting apparatus and continuous casting system
GB2303691B (en) * 1995-04-13 1998-10-28 Voest Alpine Ind Anlagen Coiler furnace for a hot strip
GB2303691A (en) * 1995-04-13 1997-02-26 Voest Alpine Ind Anlagen Hot-rolled strip reel furnace
DE19680225C1 (en) * 1995-04-13 1999-12-02 Voest Alpine Ind Anlagen Coiler furnace for a hot strip
WO1996032509A1 (en) * 1995-04-13 1996-10-17 Voest-Alpine Industrieanlagenbau Gmbh Hot-rolled strip reel furnace
AT405028B (en) * 1996-01-31 1999-04-26 Voest Alpine Ind Anlagen METHOD FOR REVERSING ROLLING A STRIP AND DEVICE FOR CARRYING OUT THE METHOD
US6134934A (en) * 1996-01-31 2000-10-24 Voest-Alpine Industrieanlagenbau Gmbh Process and device for reverse rolling metal strips
EP0916415A1 (en) * 1997-04-04 1999-05-19 Kawasaki Steel Corporation Heavy unit weight hot rolling method for sheet bars, and steel mill equipment therefor
EP0916415A4 (en) * 1997-04-04 2002-05-22 Kawasaki Steel Co Heavy unit weight hot rolling method for sheet bars, and steel mill equipment therefor
EP0904861A1 (en) * 1997-09-11 1999-03-31 Nkk Corporation Method of producing thin hot rolled steel sheet, and apparatus to carry out the method
WO2006046266A1 (en) * 2004-10-28 2006-05-04 Giovanni Arvedi Process and production line for manufacturing hot ultrathin steel strips with two casting lines for a single endless rolling line
EP1657004A1 (en) * 2004-10-28 2006-05-17 ARVEDI, Giovanni Process and production line for manufacturing hot ultrathin steel strips with two casting lines for a single endless rolling line
CN101052481B (en) * 2004-10-28 2012-11-14 乔瓦尼·阿尔维迪 Process and production line for manufacturing hot ultrathin steel strips with two casting lines for a single endless rolling line

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