EP0701873B1 - Intermediate storage oven downstream of a thin stab casting plant - Google Patents

Intermediate storage oven downstream of a thin stab casting plant Download PDF

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Publication number
EP0701873B1
EP0701873B1 EP95250210A EP95250210A EP0701873B1 EP 0701873 B1 EP0701873 B1 EP 0701873B1 EP 95250210 A EP95250210 A EP 95250210A EP 95250210 A EP95250210 A EP 95250210A EP 0701873 B1 EP0701873 B1 EP 0701873B1
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EP
European Patent Office
Prior art keywords
furnace installation
furnace
rollers
coil
station
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP95250210A
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German (de)
French (fr)
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EP0701873A1 (en
Inventor
Peter Wilhelm Seiler
Stanislaw Pawlowski
Eugeniusz Kania
Horst Wolfgang Mathejka
Werner Kircher
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Vodafone GmbH
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Mannesmann AG
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/68—Furnace coilers; Hot coilers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting

Definitions

  • the invention relates to a furnace system as a buffer between one Thin slab caster downstream thornless winder for the strip-shaped cast strand and one with the subsequent rolling mill corresponding unwinding device, and a transport system for the wound bundles through the furnace.
  • a generic furnace system is known from German Patent 32 41 745, in particular from drawing figure 2 as well as from DE-A-4 121 489, of which the preamble of Claim 1 goes out, known.
  • the prior art described there is a problem with systems that use continuous cast thin strip feed directly to a downstream rolling mill, in that the Casting speeds are and must be significantly lower than that Rolling speeds in the rolling mill. So they are different Proposed solutions have been made that allow speed compensation should be done, for example by temporarily storing the bundles coiled ribbon-shaped cast strand in a furnace, which in simple Way creates a buffer zone between the continuous caster and the rolling mill.
  • the aim of the invention is a generic device like this to design that with a largely closed furnace system only small Heat losses occur and as few movement elements in the Inside the system ensure low heat flow and high operational reliability.
  • the transport device arranged below the furnace system with outside Movable parts provided in the furnace system are susceptible to failure otherwise in Parts inside the furnace are significantly reduced. This is the required Operational safety guaranteed.
  • the Transport device consists of two coil transport trolleys, which are located on the center below the furnace system and longitudinal rails running independently of each other are movable, one transport carriage of the winding station and the other Transport trolley is assigned to the unwinding station, so one with proven Functionally reliable intermediate storage system equipped with operating elements created.
  • the for the recording the bundles on the trolleys provided the ground side reach through the opening of the furnace system that extends parallel to the rails, wherein the opening can be closed by flaps, which in the process of Transport trolleys can be moved away in the immediate area of the supports.
  • the movable parts transport trolleys
  • the flaps closing the bottom opening ensures that an extreme low heat flow is only possible where the flaps in the immediate area the trolley or the supports are moved away.
  • temporary storage purposes are storable Invention provided that the furnace system on both sides of the bottom opening outside of the winding and unwinding device with prismatic supports for the Bundles forming storage benches is provided. On these storage benches Bundles placed side by side in the longitudinal direction of the furnace system and thereby cached. Once the unwind station after unwinding a bundle is free, the transport trolley assigned to the unwinding station can do that Transfer the temporarily stored bundle to the unwind station.
  • Such domless Winding stations are known per se. Such a station is now in the Entire furnace system integrated, with the necessary to produce the federal government Driving and bending rollers are arranged so that they operate the furnace seal and thus keep the heat flow low.
  • the drive and bending rollers as a unit from the Inlet opening of the furnace system in a repair and / or inspection position are movable and the inlet opening of the furnace system when the blowing and Bending rolls can be closed by a door.
  • the in Oven system integrated unwinding station driven floor rollers as a support for the has to be unwound, as well as one in the direction of the subsequent rolling mill opening door through which a manipulator leading the beginning of the tape is insertable after threading this beginning into a pair of drive rollers is retractable, the door except for a narrow passage for band-shaped cast strand is closable.
  • Both the bottom rolls of the winding station and the unwinding station are open a movable frame arranged on below the system arranged rails can be extended transversely to the furnace system. So it will allows you to easily remove these parts from the oven to close them inspect, repair or replace.
  • the invention creates a system with which the task of present invention can be solved with simple constructive Medium with high operational reliability.
  • the system is arranged in a Z-shape, with the arrow 1 the direction of the cast strand coming from the (not shown) thin slab caster indicates and the arrow 2 shows the direction in which the unwound cast strand to subsequent rolling mill is performed.
  • the furnace system is designated 3 in total and consists essentially of the winding station 4, the unwind station 5 and the intermediate storage part 6 arranged in between designated groups, of which e.g. four next to each other are saved. With 8 a roller table piece is designated, via which the cast strand of Furnace system can be fed. In the right half of the drawing is a dashed line A mirror-inverted part of the system can be recognized, which symbolizes is that the furnace system according to the invention is advantageous for connecting two thin slab casting plants arranged in parallel or the existing system is expandable to such.
  • FIGS. 2 and 3 describe the individual system parts.
  • the enclosed roller table part is marked at 8, the the cast strand 9 receives, which of the not shown Thin slab caster comes with or without an intermediate roughing mill.
  • the Cast strand 9 is a - as indicated at 10 - movable drive roller pair 11 fed, detected by this and fed to the bending roller unit 12, the Roller guide table 13 is used for guidance.
  • Form the bending rollers of the bending roller unit 12 the cast strand to a turn that on the driven bottom rollers 14 to one Fret are shaped.
  • the bending roller set 12 as well as the Driver 11 shielded so extensively that only a small passage opening for the Cast strand 9 to be inserted remains, so the furnace is largely closed.
  • the winding process of the federal government continues, with after winding with Support the movable support roller 16, the driven floor rollers 14 den Take over the winding process to the finished bundle.
  • the tape winding speed corresponds to that of the thin slab caster or, if applicable, the speed of the roughing road.
  • the complete drive and bending roller unit is used for revision and repair purposes 11, 12 with the aid of the piston-cylinder unit 10 in the direction of the thin slab caster retracted and disconnected from the system.
  • the opening in the The furnace system is closed by the door 15, which is above the bending roller set 12 is positioned during the operating state so that the furnace temperature is maintained can be.
  • Descriptive transport trolley provided on the rails 17 below the Winding station and below the furnace system 3 is movable. This will be done first brought the band end 42 of the federal government into a position below the federal government axis and fixed there. This fixation enables a problem-free, described later Finding and unwinding the federal government.
  • the federal transport trolley lifts with its lifting and lowerable support - the bottom opening 18 in the unwinding station sweeping - the collar on and from the floor rollers 14 and transports it Bundle out of the winding station 4.
  • both the bottom of the Winding station 4 as well as the entire furnace system 3 closed with flaps 19, which only briefly when moving the trolley with the coil and can be opened and closed automatically by the trolley.
  • the length the furnace system (Fig. 1) between the winder 4 and the Unwinding device 5 depends on the one hand on the lateral distance between Thin slab caster and rolling mill but also according to the number of required storage spaces. In normal operation, those in the Winding station 4 formed bundles 7 from the trolley directly into the position of the federal government 7a or transported directly to the unwind station 5 and stored there.
  • FIG. 4 A cross section through the furnace system 3 in the region of the storage of the collar 7a is shown in Figure 4 shown. It can also be seen here that the furnace system 3 on both sides of the bottom opening 20 is provided with storage benches 21 for the bundles that preferably consist of a material with low thermal conductivity.
  • the 22 designated trolley with its lifting and lowerable support 23, the collar 7 or 7a from the winding station 4 in the has transported the storage location shown.
  • the trolley 22 is with wheels 24 driven on the rails 17 along the furnace system 3 driven.
  • the flaps 19 can be seen directly in front of and behind the transport carriage 22 closed.
  • the additional storage locations for the Bundles 7 are occupied within the furnace system 3; it is also conceivable, like at 25 in Figure 1 indicated to provide an end door in the furnace system 3 through which Bundles can be threaded out of the system and threaded.
  • the second Possibility of threading and unthreading bundles 7 is by means of Frame constructions 34 and 35 on the floor rollers 14 and 27 by opened Doors 40 and 41 respectively.
  • Figure 1 one recognizes the rails 32 and 33 transversely to the furnace system 3, which extend the bottom rollers of the unwinding and winding station.
  • the floor rollers 14 and 27 on a frame construction 34 and 35 respectively arranged on the rails 32, 33 from the furnace system 3 with the help of cylinders 36 and 37 are extendable. If necessary, it is conceivable that together with the Frame 35 of the trolley 26 can be extended for inspection and repair purposes is. Otherwise, the frames 34, 35 are constructed in such a way that the high amount of sintering, especially when unwinding the bundles can be easily removed.

Abstract

The furnace installation (3) is intended as intermediate storage and transport facility for strip material between strip coiling de-coiling units (4,5) located between thin-strip casting and rolling installations. The furnace installation is characterised by the following features: (a) the strip coiling unit (4) is integrated into the entry side of the furnace installation; (b) at least one transport system-which incorporates vertically displaceable coil bearing elements reaching into the furnace interior - is located outside below the furnace installation for transport of strip coils (7,7a); (c) the strip decoiling unit (5) (communicating with the strip coiling unit by means of the coil transport system) is integrated into the exit side of the furnace installation.

Description

Die Erfindung betrifft eine Ofenanlage als Zwischenspeicher zwischen einer einer Dünnbrammengießanlage nachgeschalteten dornlosen Aufwickelvorrichtung für den bandförmigen Gußstrang und einer mit dem nachfolgenden Walzwerk korrespondierenden Abwickelvorrichtung, sowie einem Transportsystem für die gewickelten Bunde durch die Ofenanlage.The invention relates to a furnace system as a buffer between one Thin slab caster downstream thornless winder for the strip-shaped cast strand and one with the subsequent rolling mill corresponding unwinding device, and a transport system for the wound bundles through the furnace.

Eine gattungsgemäße Ofenanlage ist sowohl aus der deutschen Patentschrift 32 41 745, insbesondere aus Zeichnungsfigur 2 als auch aus der DE-A-4 121 489, von der der Oberbegriffs des Anspruchs 1 ausgeht, bekannt. Wie beim Stand der Technik beschrieben, besteht das Problem bei Anlagen, die stranggegossenes Dünnband unmittelbar einem nachgeschalteten Walzwerk zuführen, darin, daß die Gießgeschwindigkeiten wesentlich niedriger sind und sein müssen, als die Walzgeschwindigkeiten im Walzwerk. Es sind deshalb verschiedene Lösungsvorschläge gemacht worden, mit denen ein Geschwindigkeitsausgleich gemacht werden sollte, beispielsweise durch Zwischenspeichern des zu Bunden aufgewickelten bandförmigen Gußstranges in einer Ofenanlage, die in einfacher Weise eine Pufferzone zwischen der Stranggießanlage und dem Walzwerk schafft.A generic furnace system is known from German Patent 32 41 745, in particular from drawing figure 2 as well as from DE-A-4 121 489, of which the preamble of Claim 1 goes out, known. As with the prior art described, there is a problem with systems that use continuous cast thin strip feed directly to a downstream rolling mill, in that the Casting speeds are and must be significantly lower than that Rolling speeds in the rolling mill. So they are different Proposed solutions have been made that allow speed compensation should be done, for example by temporarily storing the bundles coiled ribbon-shaped cast strand in a furnace, which in simple Way creates a buffer zone between the continuous caster and the rolling mill.

Es hat sich gezeigt, daß sich bei einer solchen Ofenanlage, die beim gattungsbildenden Stand der Technik nur grob schematisch umrissen ist, eine Reihe von Problemen und Schwierigkeiten einstellen, die im wesentlichen durch die Kompliziertheit der verwendeten Vorrichtungen und unzureichende Wärmebilanzen begründet sind. Während die Kompliziertheit des Systems eine Frage der Kosten und damit der Wirtschaftlichkeit der Anlage, aber auch deren wirtschaftlichen Betriebes ist, wenn an Stör- und Reparaturzeiten gedacht wird, so ist die Wärmebilanz unmittelbar entscheidend für die Qualität des zu walzenden Vorproduktes.It has been shown that in such a furnace system, the generic state of the art is only roughly outlined schematically, a number of problems and difficulties that are essentially caused by the Complexity of the devices used and insufficient heat balances are justified. While the complexity of the system is a matter of cost and so that the profitability of the system, but also its economic operation, if one thinks of malfunction and repair times, the heat balance is immediate decisive for the quality of the preliminary product to be rolled.

Ausgehend davon ist es Ziel der Erfindung, eine gattungsgemäße Vorrichtung so auszugestalten, daß bei einem weitgehend geschlossenen Ofensystem nur geringe Wärmeverluste auftreten und möglichst wenige Bewegungselemente im Systeminneren für einen geringen Wärmeabfluß und hohe Betriebssicherheit sorgen.Proceeding from this, the aim of the invention is a generic device like this to design that with a largely closed furnace system only small Heat losses occur and as few movement elements in the Inside the system ensure low heat flow and high operational reliability.

Zur Lösung der Aufgabe wird eine Weiterbildung der gattungsgemäßen Ofenanlage vorgeschlagen, die gekennzeichnet ist durch folgende Merkmale:

  • a) Die Aufwickelvorrichtung ist einlaufseitig in die Ofenanlage integriert,
  • b) außerhalb und unterhalb der Ofenanlage ist mindestens eine längst der Ofenanlage verfahrbare Transportvorrichtung für die Bunde vorgesehen, die mit heb- und senkbaren Auflagen für das zu transportierende Bund in die Ofenanlage eingreift,
  • c) in einem die Aufnahme mehrerer nebeneinander angeordneter Bunde gestattenden Abstand von der Aufwickelvorrichtung ist die Abwickelvorrichtung gleichfalls in die Ofenanlage integriert, die über die Transportvorrichtung mit der Aufwickelvorrichtung korrespondiert.
    • To solve the problem, a development of the generic furnace system is proposed, which is characterized by the following features:
  • a) the take-up device is integrated into the furnace system on the inlet side,
  • b) outside and below the furnace system, at least one transport device for the bundles, which can be moved along the furnace system and which intervenes in the furnace system with lifting and lowering supports for the bundle to be transported, is provided,
  • c) at a distance from the take-up device which allows a plurality of bundles arranged next to one another to be accommodated, the take-off device is likewise integrated into the furnace system and corresponds to the take-up device via the transport device.

    • Durch die Integration von Aufwickel- und Abwickelvorrichtung in die Ofenanlage entsteht das geforderte in sich geschlossene System mit geringen Wärmeverlusten, wobei die unterhalb der Ofenanlage angeordnete Transportvorrichtung mit außerhalb der Ofenanlage vorgesehenen bewegbaren Teilen die Störanfälligkeit bei sonst im Ofeninneren vorgesehenen Teilen deutlich reduziert. Damit wird die geforderte Betriebssicherheit gewährleistet.By integrating the winding and unwinding device in the furnace system creates the required self-contained system with low heat losses, the transport device arranged below the furnace system with outside Movable parts provided in the furnace system are susceptible to failure otherwise in Parts inside the furnace are significantly reduced. This is the required Operational safety guaranteed.

    Wenn nach einem weiteren Merkmal der Erfindung vorgesehen ist, daß die Transportvorrichtung aus zwei Bundtransportwagen besteht, die auf mittig unterhalb der Ofenanlage und längs dazu verlaufenden Fahrschienen unabhängig voneinander bewegbar sind, wobei ein Transportwagen der Aufwickelstation und der weitere Transportwagen der Abwickelstation zugeordnet ist, so wird ein mit bewährten Betriebselementen ausgestattetes funktionssicheres Zwischenspeichersystem geschaffen.If according to a further feature of the invention it is provided that the Transport device consists of two coil transport trolleys, which are located on the center below the furnace system and longitudinal rails running independently of each other are movable, one transport carriage of the winding station and the other Transport trolley is assigned to the unwinding station, so one with proven Functionally reliable intermediate storage system equipped with operating elements created.

    Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß die für die Aufnahme der Bunde auf den Transportwagen vorgesehenen Auflagen die sich bodenseitig parallel zu den Fahrschienen erstreckende Öffnung der Ofenanlage durchgreifen, wobei die Öffnung durch Klappen verschließbar ist, die beim Verfahren der Transportwagen im unmittelbaren Bereich der Auflagen wegbewegbar sind. Wie bereits vorstehend erläutert sind die bewegbaren Teile (Transportwagen) außerhalb der Ofenanlage angeordnet und weisen lediglich die heb- und senkbaren Auflagen auf, die bodenseitig in den Ofen hineingreifen. Durch die vorgeschlagenen, die bodenseitige Öffnung verschließenden Klappen wird sichergestellt, daß ein äußerst geringer Wärmeabfluß nur dort möglich ist, wo die Klappen im unmittelbaren Bereich der Transportwagen bzw. der Auflagen wegbewegt werden.According to a further feature of the invention it is provided that the for the recording the bundles on the trolleys provided the ground side reach through the opening of the furnace system that extends parallel to the rails, wherein the opening can be closed by flaps, which in the process of Transport trolleys can be moved away in the immediate area of the supports. How The movable parts (transport trolleys) have already been explained above the furnace system and only have the lifting and lowering supports, who reach into the bottom of the oven. Through the proposed, the flaps closing the bottom opening ensures that an extreme low heat flow is only possible where the flaps in the immediate area the trolley or the supports are moved away.

    Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß mit dem Wegbewegen der Klappen eine Durchlaßöffnung zur Entsinterung freimachbar ist. Da im Ofeninneren stets Sinter anfällt, ist sicherzustellen, daß dieser den Ofen verlassen kann. Dazu bietet es sich an, die Klappen entsprechend zu gestalten, daß eine Selbstreinigung des Ofens erfolgen kann.According to a further feature of the invention it is provided that with the Moving the flaps clear a passage opening for desintering. There Sintering always occurs inside the furnace, ensure that it leaves the furnace can. It is advisable to design the flaps accordingly that a Self-cleaning of the oven can be done.

    Damit die von den Transportwagen in derOfenanlage transportierten Bunde dort zu Zwischenspeicherzwecken ablegbar sind, ist nach einem weiteren Merkmal der Erfindung vorgesehen, daß die Ofenanlage beidseitig der bodenseitigen Öffnung außerhalb der Aufwickel- und Abwickelvorrichtung mit prismenartigen Auflagen für die Bunde bildenden Ablagebänken versehen ist. Auf diese Ablagebänke werden die Bunde in Längsrichtung der Ofenanlage nebeneinander abgelegt und dadurch zwischengespeichert. Sobald die Abwickelstation nach dem Abwickeln eines Bundes frei ist, kann der der Abwickelstation zugeordnete Transportwagen das zwischengespeicherte Bund in die Abwickelstation überführen.The bundles transported by the trolleys in the furnace system According to a further feature, temporary storage purposes are storable Invention provided that the furnace system on both sides of the bottom opening outside of the winding and unwinding device with prismatic supports for the Bundles forming storage benches is provided. On these storage benches Bundles placed side by side in the longitudinal direction of the furnace system and thereby cached. Once the unwind station after unwinding a bundle is free, the transport trolley assigned to the unwinding station can do that Transfer the temporarily stored bundle to the unwind station.

    Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß die Aufwickelstation innerhalb der Ofenanlage angeordnete antreibbare Bodenrollen für den von der Dünnbrammengießanlage komenden bandförmigen Gußstrang aufweist, denen zum Formen des Bundes Treib- und verstellbare Biegerollen zugeordnet sind, welche im Betriebszustand die Ofeneinlaßöffnung weitgehend verschließen. Derartige domlose Aufwickelstationen sind an sich bekannt. Eine solche Station wird nunmehr in die gesamte Ofenanlage integriert, wobei die zum Herstellen des Bundes notwendigen Treib- und Biegerollen so angeordnet sind, daß sie in Betriebsstellung den Ofen verschließen und somit den Wärmeabfluß gering halten. According to a further feature of the invention it is provided that the winding station Drivable floor rollers arranged within the furnace system for the Thin slab casting system coming band-shaped cast strand, which for Forms of the federal driving and adjustable bending rollers are assigned, which in the Close the oven inlet opening as far as possible. Such domless Winding stations are known per se. Such a station is now in the Entire furnace system integrated, with the necessary to produce the federal government Driving and bending rollers are arranged so that they operate the furnace seal and thus keep the heat flow low.

    Vorzugsweise ist vorgesehen, daß die Treib- und Biegerollen als Einheit aus der Einlaßöffnung der Ofenanlage heraus in eine Reparatur- und/oder Inspektionsstellung verfahrbar sind und die Einlaßöffnung der Ofenanlage bei ausgefahrenen Treib-und Biegerollen durch eine Tür verschließbar ist. Durch diesen Vorschlag der Erfindung können die Verschleiß ausgesetzten Teile sehr schnell aus der Gesamtanlage herausgefahren werden, ohne daß Wärmeverluste im Ofen auftreten; denn die entstehende Öffnung wird sofort durch die Tür verschlossen.It is preferably provided that the drive and bending rollers as a unit from the Inlet opening of the furnace system in a repair and / or inspection position are movable and the inlet opening of the furnace system when the blowing and Bending rolls can be closed by a door. By this proposal of the invention the parts exposed to wear can be removed very quickly from the overall system be brought out without heat loss in the furnace; because that The opening is closed immediately by the door.

    Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß auch die in die Ofenanlage integrierte Abwickelstation angetriebene Bodenrollen als Auflage für das abzuwickelnde Bund aufweist, sowie eine in Richtung des nachfolgenden Walzwerkes zu öffnende Tür, durch welche ein den Anfang des Bandes führender Manipulator einführbar ist, der nach dem Einfädeln dieses Anfanges in ein Treibrollenpaar zurückfahrbar ist, wobei die Tür bis auf eine schmale Durchlaßöffnung für den bandförmigen Gußstrang verschließbar ist.According to a further feature of the invention it is provided that the in Oven system integrated unwinding station driven floor rollers as a support for the has to be unwound, as well as one in the direction of the subsequent rolling mill opening door through which a manipulator leading the beginning of the tape is insertable after threading this beginning into a pair of drive rollers is retractable, the door except for a narrow passage for band-shaped cast strand is closable.

    Sowohl die Bodenrollen der Aufwickelstation als auch der Abwickelstation sind auf einem verfahrbaren Rahmen angeordnet, der auf unterhalb des Systems angeordneten Fahrschienen quer zur Ofenanlage ausfahrbar ist. Somit wird es ermöglicht, auch diese Teile leicht aus dem Ofen herauszunehmen, um sie zu inspizieren bzw. zu reparieren oder zu ersetzen.Both the bottom rolls of the winding station and the unwinding station are open a movable frame arranged on below the system arranged rails can be extended transversely to the furnace system. So it will allows you to easily remove these parts from the oven to close them inspect, repair or replace.

    Weitere Ausgestaltungen dfer Erfindung sind in den Unteransprüchen beschrieben.Further refinements of the invention are described in the subclaims.

    Insgesamt wird durch die Erfindung ein System geschaffen, mit dem die Aufgabe der vorliegenden Erfindung gelöst werden kann, und zwar mit einfachen konstruktiven Mitteln bei hoher Betriebssicherheit.Overall, the invention creates a system with which the task of present invention can be solved with simple constructive Medium with high operational reliability.

    Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigt:

    Figur 1
    eine Gesamtansicht der erfindungsgemäßen Ofenlage von oben.
    Figur 2
    einen Querschnitt durch die Aufwickelstation
    Figur 3
    einen Querschnitt durch die Abwickelstation und
    Figur 4
    einen Querschnitt durch die Ofenanlage
    An embodiment of the invention is shown in the drawing and is described below. It shows:
    Figure 1
    an overall view of the furnace layer according to the invention from above.
    Figure 2
    a cross section through the winding station
    Figure 3
    a cross section through the unwind station and
    Figure 4
    a cross section through the furnace system

    Wie Figur 1 zeigt, ist das System in Z-Form angeordnet, wobei der Pfeil 1 die Richtung des von der (nicht dargestellten) Dünnbrammengießanlage kommenden Gußstranges angibt und der Pfeil 2 die Richtung zeigt, in der der abgewickelte Gußstrang zum nachfolgenden Walzwerk geführt wird. Die Ofenanlage ist insgesamt mit 3 bezeichnet und besteht im wesentlichen aus der Aufwickelstation 4, der Abwickelstation 5 und dem dazwischen angeordneten Zwischenspeicherteil 6. In diesen sind mit 7 bezeichnete Bunde dargestellt, von denen z.B. vier Stück nebeneinanderliegend gespeichert sind. Mit 8 ist ein Rollgangsstück bezeichnet, über das der Gußstrang der Ofenanlage zuführbar ist. In der rechten Zeichnungshälfte ist gestrichelt ein spiegelbildlich angeordneter Anlagenteil erkennbar, durch den symbolisiert werden soll, daß sich die erfindungsgemäße Ofenanlage vorteilhaft zur Verbindung zweier parallel nebeneinander angeordneter Dünnbrammengießanlagen eignet bzw. die bestehende Anlage auf eine solche erweiterungsfähig ist.As Figure 1 shows, the system is arranged in a Z-shape, with the arrow 1 the direction of the cast strand coming from the (not shown) thin slab caster indicates and the arrow 2 shows the direction in which the unwound cast strand to subsequent rolling mill is performed. The furnace system is designated 3 in total and consists essentially of the winding station 4, the unwind station 5 and the intermediate storage part 6 arranged in between designated groups, of which e.g. four next to each other are saved. With 8 a roller table piece is designated, via which the cast strand of Furnace system can be fed. In the right half of the drawing is a dashed line A mirror-inverted part of the system can be recognized, which symbolizes is that the furnace system according to the invention is advantageous for connecting two thin slab casting plants arranged in parallel or the existing system is expandable to such.

    Die einzelnen Anlagenteile lassen sich anhand der Figuren 2 und 3 am besten beschreiben. In Figur 2 ist bei 8 der eingehauste Rollgangsteil gekennzeichnet, der den Gußstrang 9 aufnimmt, welcher von der nicht dargestellten Dünnbrammengießanlage mit oder ohne zwischengeschalteter Vorstraße kommt. Der Gußstrang 9 wird einem - wie bei 10 angedeutet - verfahrbaren Treibrollenpaar 11 zugeleitet, von diesem erfaßt und der Biegerolleneinheit 12 zugeführt, wobei der Rollenleittisch 13 der Führung dient. Die Biegerollen der Biegerolleneinheit 12 formen den Gußstrang zu einer Windung, die auf den angetriebenen Bodenrollen 14 zu einem Bund geformt werden. Wie erkennbar, sind der Biegerollensatz 12 sowie auch der Treiber 11 so umfangreich abgeschirmt, daß nur eine geringe Durchlaßöffnung für den einzuführenden Gußstrang 9 verbleibt, also der Ofen weitgehend geschlossen ist.The individual system parts can best be seen in FIGS. 2 and 3 describe. In Figure 2, the enclosed roller table part is marked at 8, the the cast strand 9 receives, which of the not shown Thin slab caster comes with or without an intermediate roughing mill. Of the Cast strand 9 is a - as indicated at 10 - movable drive roller pair 11 fed, detected by this and fed to the bending roller unit 12, the Roller guide table 13 is used for guidance. Form the bending rollers of the bending roller unit 12 the cast strand to a turn that on the driven bottom rollers 14 to one Fret are shaped. As can be seen, the bending roller set 12 as well as the Driver 11 shielded so extensively that only a small passage opening for the Cast strand 9 to be inserted remains, so the furnace is largely closed.

    Der Aufwickelvorgang des Bundes setzt sich fort, wobei nach dem Anwickeln mit Unterstützung der beweglichen Stützrolle 16 die angetriebenen Bodenrollen 14 den Aufwickelvorgang zum fertigen Bund übernehmen. Die Bandaufwickelgeschwindigkeit entspricht der der Dünnbrammengießanlage bzw. ggf. der Vorstraßengeschwindigkeit. Um eine Zeitdifferenz zwischen dem Abtransport des Bundes von den Bodenrollen der Aufwickelstation und dem nachfolgenden Anfang des nächsten Gußstrangabschnittes zu erhalten, werden die letzten Windungen mit höherer Geschwindigkeit aufgewickelt. Die Zeitdifferenz ist so bemessen, daß das fertige Bund aus der Aufwickelstation heraustransportierbar ist, bevor der Anfang des nächsten Gußstranges einläuft. The winding process of the federal government continues, with after winding with Support the movable support roller 16, the driven floor rollers 14 den Take over the winding process to the finished bundle. The tape winding speed corresponds to that of the thin slab caster or, if applicable, the speed of the roughing road. By a time difference between the removal of the federal government from the ground rolls of the Winding station and the subsequent beginning of the next casting section to get, the last turns are wound up at a higher speed. The time difference is dimensioned so that the finished bundle from the winding station can be transported out before the beginning of the next cast strand arrives.

    Zu Revisions- und Reparaturzwecken wird die komplette Treib- und Biegerolleneinheit 11, 12 mit Hilfe der Kolbenzylindereinheit 10 in Richtung der Dünnbrammengießanlage zurückgefahren und vom System getrennt. Die dabei entstehende Öffnung in der Ofenanlage wird durch die Tür 15 verschlossen, die oberhalb des Biegerollensatzes 12 während des Betriebszustandes positioniert ist, so daß die Ofen temperatur gehalten werden kann.The complete drive and bending roller unit is used for revision and repair purposes 11, 12 with the aid of the piston-cylinder unit 10 in the direction of the thin slab caster retracted and disconnected from the system. The opening in the The furnace system is closed by the door 15, which is above the bending roller set 12 is positioned during the operating state so that the furnace temperature is maintained can be.

    Zum Transportieren des Bundes aus der Aufwickelstation heraus ist ein später noch zu beschreibender Transportwagen vorgesehen, der auf Fahrschienen 17 unterhalb der Aufwickelstation und unterhalb der Ofenanlage 3 verfahrbar ist. Dazu wird zunächst das Bandende 42 des Bundes in eine Lage unterhalb der Bundachse gebracht und dort fixiert. Diese Fixierung ermöglicht ein problemloses, später noch beschriebenes Auffinden und Abwickeln des Bundes. Der Bundtransportwagen hebt mit seiner heb-und senkbaren Auflage - die bodenseitige Öffnung 18 in der Abwickelstation durchgreifend - das Bund an und von den Bodenrollen 14 ab und transportiert das Bund aus der Aufwickelstation 4 heraus. In der übrigen Zeit sind sowohl der Boden der Aufwickelstation 4 wie auch der gesamten Ofenanlage 3 mit Klappen 19 verschlossen, die lediglich beim Verfahren des Transportwagens mit dem Coil kurzzeitig und selbsttätig durch den Transportwagen geöffnet und geschlossen werden. Die Länge der Ofenanlage (Fig. 1) zwischen der Aufwickelvorrichtung 4 und der Abwickelvorrichtung 5 richtet sich einerseits nach dem seitlichen Abstand zwischen Dünnbrammengießanlage und Walzstraße aber auch nach der Anzahl der erforderlichen Speicherplätze. Im normalen Betriebsfall werden die in der Aufwickelstation 4 gebildeten Bunde 7 vom Transportwagen unmittelbar in die Position des Bundes 7a oder direkt in die Abwickelstation 5 transportiert und dort abgelegt.To transport the bundle out of the take-up station, one is still closed later Descriptive transport trolley provided on the rails 17 below the Winding station and below the furnace system 3 is movable. This will be done first brought the band end 42 of the federal government into a position below the federal government axis and fixed there. This fixation enables a problem-free, described later Finding and unwinding the federal government. The federal transport trolley lifts with its lifting and lowerable support - the bottom opening 18 in the unwinding station sweeping - the collar on and from the floor rollers 14 and transports it Bundle out of the winding station 4. In the rest of the time, both the bottom of the Winding station 4 as well as the entire furnace system 3 closed with flaps 19, which only briefly when moving the trolley with the coil and can be opened and closed automatically by the trolley. The length the furnace system (Fig. 1) between the winder 4 and the Unwinding device 5 depends on the one hand on the lateral distance between Thin slab caster and rolling mill but also according to the number of required storage spaces. In normal operation, those in the Winding station 4 formed bundles 7 from the trolley directly into the position of the federal government 7a or transported directly to the unwind station 5 and stored there.

    Einen Querschnitt durch die Ofenanlage 3 im Bereich der Ablage des Bundes 7a ist in Figur 4 dargestellt. Hier ist gleichfalls erkennbar, daß die Ofenanlage 3 beidseitig der bodenseitigen Öffnung 20 mit Ablagebänken 21 für die Bunde versehen ist, die vorzugsweise aus einem Material geringer Wärmeleitfähigkeit bestehen. In Figur 4 ist auch der mit 22 bezeichnete Transportwagen erkennbar, der mit seiner heb-und senkbaren Auflage 23 das Bund 7 bzw. 7a aus der Aufwickelstation 4 in die dargestellte Speicherposition transportiert hat. Der Transportwagen 22 ist mit Rädern 24 auf den Schienen 17 längs der Ofenanlage 3 angetrieben verfahrbar. In Figur 4 sind erkennbar die Klappen 19 unmittelbar vor und hinter dem Transportwagen 22 geschlossen. A cross section through the furnace system 3 in the region of the storage of the collar 7a is shown in Figure 4 shown. It can also be seen here that the furnace system 3 on both sides of the bottom opening 20 is provided with storage benches 21 for the bundles that preferably consist of a material with low thermal conductivity. In Figure 4 is also recognizable with the 22 designated trolley, with its lifting and lowerable support 23, the collar 7 or 7a from the winding station 4 in the has transported the storage location shown. The trolley 22 is with wheels 24 driven on the rails 17 along the furnace system 3 driven. In Figure 4 the flaps 19 can be seen directly in front of and behind the transport carriage 22 closed.

    Bei einer Störung in der Walzstraße können auch die weiteren Speicherplätze für die Bunde 7 innerhalb der Ofenanlage 3 belegt werden; es ist auch denkbar, wie bei 25 in Figur 1 angedeutet, eine stirnseitige Tür in der Ofenanlage 3 vorzusehen, durch die Bunde aus dem System ausgefädelt und eingefädelt werden können. Die zweite Möglichkeit des Ein- und Ausfädelns von Bunden 7 besteht mittels Rahmenkonstruktionen 34 bzw.35 auf die Bodenrollen 14 bzw.27 durch geöffnete Türen 40 bzw.41.In the event of a malfunction in the rolling mill, the additional storage locations for the Bundles 7 are occupied within the furnace system 3; it is also conceivable, like at 25 in Figure 1 indicated to provide an end door in the furnace system 3 through which Bundles can be threaded out of the system and threaded. The second Possibility of threading and unthreading bundles 7 is by means of Frame constructions 34 and 35 on the floor rollers 14 and 27 by opened Doors 40 and 41 respectively.

    Das im normalen Betriebszustand aus der Aufwickelstation transportierte Bund wird entweder direkt mit dem Transportwagen 22 in die Abwickelstation 5 gefahren oder vom Transportwagen 22 in die Position 7a transportiert und nach Ablage auf den Ablagebänken 21 vom zweiten Transportwagen 26 übernommen, der der Abwickelstation 5 zugeordnet ist. Dieser Transportwagen ist im wesentlichen baugleich mit dem Transportwagen 22, der der Aufwickelstation zugeordnet ist und unabhängig von diesem ebenfalls auf den Schienen 17 verfahrbar ist. In Figur 3 ist in einem Querschnitt durch die Abwickelstation erkennbar, daß der Transportwagen 26 bei geöffneten Klappen 19 mit seiner heb- und senkbaren Auflage 23 für das Bund 7 durch die zwischen den Bodenrollen 27 der Abwickelstation gebildete Öffnung hindurchgreift und somit das Bund 7 nach Absenken der Auflage 23 auf die Bodenrollen 27 ablegt. Dabei bewährt sich die Vorpositionierung des Bundanfanges unterhalb der Bundachse, die es dem Bundöffner 28 ermöglicht, nach Öffnen der Tür 29 druckmittelbetrieben 30 einzufahren und den Bundanfang zu den Treibrollen 31 zu leiten. Gleichzeitig beginnen die angetriebenen Bodenrollen 27 mit dem Abwickeln des Bundes 7. Sobald die Treibrollen 31 den Anfang des Bundes 7 erfaßt haben, wird die Tür 29 der Ofenanlage bis auf einen geringen, den Gußstrang 9 durchlassenden Spalt, geschlossen und in dieser Position belassen, bis das Abwickeln des Bundes erfolgt ist. Es ist denkbar, gegen Ende des Abwickelvorganges Bundhalter 38 in das Auge 39 des Bundes 7 einzuschwenken, um zu verhindern, daß sich das Restbund von den Bodenrollen abhebt. Die Bundhalter 38 sind in Figur 1 erkennbar. Ebenfalls in Figur 1 erkennt man die Fahrschienen 32 und 33 quer zur Ofenanlage 3, die ein Ausfahren der Bodenrollen der Abwickelstation und Aufwickelstation ermöglichen. Zu diesem Zweck sind die Bodenrollen 14 bzw. 27 auf einer Rahmenkonstruktion 34 bzw. 35 angeordnet, die auf den Schienen 32, 33 aus der Ofenanlage 3 mit Hilfe von Zylindern 36 und 37 ausfahrbar sind. Bei Bedarf ist es denkbar, daß zusammen mit dem Rahmen 35 der Transportwagen 26 zu Revisions- und Reparaturzwecken ausfahrbar ist. Im übrigen sind die Rahmen 34, 35 so konstruiert, daß der hohe Sinteranfall, insbesonder beim Abwickeln der Bunde problemlos abgeführt werden kann.The bundle transported from the take-up station in the normal operating state is either drove directly into the unwinding station 5 with the transport trolley 22 or transported by the trolley 22 to the position 7a and after storage on the Storage benches 21 taken over by the second trolley 26, the Unwind station 5 is assigned. This dolly is essentially identical to the trolley 22 which is assigned to the winding station and independent of this is also movable on the rails 17. In Figure 3 is in a cross section through the unwinding station recognizable that the trolley 26th when the flaps 19 are open with its lifting and lowering support 23 for the collar 7 through the opening formed between the bottom rollers 27 of the unwinding station reaches through and thus the collar 7 after lowering the pad 23 on the Floor rolls 27 sets. The prepositioning of the beginning of the collar has proven itself below the collar axis, which allows the collar opener 28, after opening the door 29 pressure medium operated 30 retract and the collar beginning to the drive rollers 31 conduct. At the same time, the driven floor rollers 27 begin to unwind Federal 7. As soon as the drive rollers 31 have grasped the beginning of the federal 7, the Door 29 of the furnace system except for a small gap which allows the cast strand 9 to pass through, closed and left in this position until the bundle has been unwound. It is conceivable to pull the collar holder 38 into the eye 39 of the end of the unwinding process Swing federal 7 to prevent the rest of the bundle from the Ground rollers stand out. The collar holder 38 can be seen in Figure 1. Also in Figure 1 one recognizes the rails 32 and 33 transversely to the furnace system 3, which extend the bottom rollers of the unwinding and winding station. To this Purpose are the floor rollers 14 and 27 on a frame construction 34 and 35 respectively arranged on the rails 32, 33 from the furnace system 3 with the help of cylinders 36 and 37 are extendable. If necessary, it is conceivable that together with the Frame 35 of the trolley 26 can be extended for inspection and repair purposes is. Otherwise, the frames 34, 35 are constructed in such a way that the high amount of sintering, especially when unwinding the bundles can be easily removed.

    Claims (12)

    1. A furnace installation as an intermediate store between a mandrel-less winding device (4), succeeding a thin-slab casting plant, for the strip-shaped cast billet (9) and an unwinding device (5) corresponding with the subsequent rolling mill and also a system (22, 26) for transporting the coiled bundles (7, 7a) through the furnace installation,
      characterised by the following features:
      a) the winding device (4) is integrated in the furnace installation (3) on the inlet side.
      b) outside and beneath the furnace installation (3) there is provided at least one transport device (22, 26), movable along the furnace installation (3), for the coils (7, 7a), which device engages in the furnace installation (3) with support surfaces (23) which can be raised and lowered for the coil (7, 7a) which is to be transported.
      c) the unwinding device (5) is likewise integrated in the furnace installation (3) at a distance from the winding device (4) which permits the receiving of a plurality of coils (7, 7a) located next to each other, which unwinding device corresponds with the winding device via the transport device (22, 26).
    2. A furnace installation according to Claim 1, characterised in that the transport device consists of two coil transporters (22, 26) which are movable independently of each other on rails (17) located centrally beneath the furnace installation (3) and extending longitudinally thereto, one transporter (22) being associated with the winding station (4) and the additional transporter (26) with the unwinding station (5).
    3. A furnace installation according to Claims 1 and 2, characterised in that the support surfaces (23) provided for receiving the coils (7) on the transporters (22, 26) engage through the opening (20) in the furnace installation (3) which extends on the base side parallel to the rails (17), the opening (18 or 20) being closable by means of flaps (19) which can be moved away when the transporters (22, 26) move into the immediate vicinity of the support surfaces (23).
    4. A furnace installation according to Claim 3, characterised in that a passage opening for descaling can be revealed when the flaps (19) are moved away.
    5. A furnace installation according to Claims 1 to 4, characterised in that the furnace installation (3) is provided on either side of the basal opening (20) outside the winding device (4) and unwinding device (5) with deposition beds (21) which form prism-like support surfaces for coils (7, 7a).
    6. A furnace installation according to Claim 1, characterised in that the winding station (4) has drivable base rollers (14) for the strip-shaped cast billet (9) coming from the thin-slab casting installation, which rollers are located inside the furnace installation and with which driving rollers and adjustable bending rollers (11, 12) are associated for forming the coil (7), which rollers largely close the furnace inlet opening in the operating state.
    7. A furnace installation according to Claim 6, characterised in that the driving and bending rollers (11, 12) can be moved as a unit out of the inlet opening of the furnace installation (3) into a repair and/or inspection position and the inlet opening of the furnace installation (3) can be closed by a door (15) when the driving and bending rollers are moved out.
    8. A furnace installation according to Claims 1 and 2, characterised in that the unwinding station (5) integrated in the furnace installation (3) has driven base rollers (27) for the coil (7) which is to be unwound, and also a door (29) which can be opened in the direction (2) of the subsequent rolling mill, through which door a manipulator (28) which guides the beginning of the coil (7) can be introduced, which can be moved back once the beginning has been threaded into a pair of driving rollers (31), the door (29) being able to be closed, leaving just a narrow passage opening for the strip-shaped cast billet (9).
    9. A furnace installation according to Claims 6 and 8, characterised in that the base rollers of the winding station (14) and the base rollers of the unwinding station (27) are located on a movable frame (34 or 35) which can be moved transversely to the furnace installation (3) on rails (32 or 33) located beneath the system.
    10. A furnace installation according to Claims 1 and 2, characterised in that the strip end (42) of the coil (7) is brought and fixed into a defined position beneath the coil axis.
    11. A furnace installation according to Claims 1 to 10, characterised in that all the means can be moved out of the furnace region.
    12. A furnace installation according to Claims 1 to 11, characterised in that the furnace installation (3) can be converted into a twin-strand installation by extending a winding station (4) and intermediate storage section (6).
    EP95250210A 1994-09-15 1995-08-28 Intermediate storage oven downstream of a thin stab casting plant Expired - Lifetime EP0701873B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4434370 1994-09-15
    DE4434370A DE4434370C2 (en) 1994-09-15 1994-09-15 Furnace plant as a buffer behind a thin slab caster

    Publications (2)

    Publication Number Publication Date
    EP0701873A1 EP0701873A1 (en) 1996-03-20
    EP0701873B1 true EP0701873B1 (en) 1999-03-31

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    ID=6529223

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95250210A Expired - Lifetime EP0701873B1 (en) 1994-09-15 1995-08-28 Intermediate storage oven downstream of a thin stab casting plant

    Country Status (4)

    Country Link
    US (1) US5823766A (en)
    EP (1) EP0701873B1 (en)
    AT (1) ATE178237T1 (en)
    DE (2) DE4434370C2 (en)

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19750998C1 (en) * 1997-11-18 1999-08-19 Thyssenkrupp Stahl Ag Coil box furnace
    US8043089B2 (en) * 1999-04-23 2011-10-25 3M Innovative Properties Company One piece dental implant and use thereof in prostodontic and orthodontic applications

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3241745C2 (en) * 1982-11-11 1985-08-08 Mannesmann AG, 4000 Düsseldorf Process for the production of hot-rolled steel strip from continuously cast raw material in directly successive work steps
    DE3525457C3 (en) * 1985-07-17 1999-06-10 Mannesmann Ag Rolling mill for the production of hot-rolled steel strips
    JPS63252604A (en) * 1987-04-08 1988-10-19 Hitachi Ltd Method and apparatus for rolling coupled directly to continuous casting
    DE4121489C2 (en) * 1991-06-26 1994-08-04 Mannesmann Ag Furnace plant as a buffer behind a thin slab caster

    Also Published As

    Publication number Publication date
    US5823766A (en) 1998-10-20
    DE4434370C2 (en) 1998-05-28
    ATE178237T1 (en) 1999-04-15
    DE4434370A1 (en) 1996-03-21
    EP0701873A1 (en) 1996-03-20
    DE59505488D1 (en) 1999-05-06

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