EP1032716A1 - Coil box oven - Google Patents

Coil box oven

Info

Publication number
EP1032716A1
EP1032716A1 EP98955579A EP98955579A EP1032716A1 EP 1032716 A1 EP1032716 A1 EP 1032716A1 EP 98955579 A EP98955579 A EP 98955579A EP 98955579 A EP98955579 A EP 98955579A EP 1032716 A1 EP1032716 A1 EP 1032716A1
Authority
EP
European Patent Office
Prior art keywords
coil
saddle
box furnace
coil box
furnace according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98955579A
Other languages
German (de)
French (fr)
Other versions
EP1032716B1 (en
Inventor
Ernst-Ulrich Becker
Detlef Bosselmann
Michael Degner
Michael Nowak
Gerd Thiemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Publication of EP1032716A1 publication Critical patent/EP1032716A1/en
Application granted granted Critical
Publication of EP1032716B1 publication Critical patent/EP1032716B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a coil box furnace with a heating device for reheating a coil to the rolling temperature and a saddle for receiving the coil to be reheated.
  • peripheral devices In the context of cost-optimized production, the production of hot strip increasingly forces the use of peripheral devices to minimize material waste. These include, in particular, devices with which a supporting strip in the process line can be preserved in the event of a malfunction in such a way that it can be reintroduced into the process line after the malfunction has been rectified in order to continue production.
  • a coil box in the infeed of a finishing line enables the pre-strip to be wound up and buffered for around ten minutes before use in the finishing line for mild steel grades.
  • Such an arrangement of a coil box is known for example from DE-OS 2 256 030.
  • EP 0 734 793 AI discloses viewing coil boxes in front of and behind a reversing frame.
  • a coil box furnace known from practice is designed as a chamber furnace with a fixed and a movable housing part.
  • the movable housing part has an electromechanical drive and can be moved on rail wheels.
  • the furnace is heated by meandering heating conductors, which are installed on the four side walls of the furnace and are combined into individual control groups.
  • the not specially heated circular segment-shaped saddle for the coil stands on a base plate made of refractory concrete and a frame made of heat-resistant steel (see Fig. 1).
  • the object of the present invention is to improve a coil box furnace of the type mentioned at the outset such that the coil temporarily stored therein can be heated as evenly as possible to the rolling temperature, so that the temperature-related final thickness tolerances of the finished rolled strip can be minimized.
  • the saddle has at least two bearing surfaces which support the coil tangentially on its outer circumference, the saddle preferably being trapezoidal.
  • the solution according to the invention is based on the knowledge that the periodic temperature changes in the preliminary strip taken from the known coil box furnace are caused by the circular saddle of the coil box furnace. Because of the circular-shaped receiving saddle, thermal energy is extracted from the overlying band by radial heat conduction in a relatively large area, which leads to the periodic temperature changes mentioned.
  • the support area of the receiving saddle is significantly reduced and thus the heat loss is considerably reduced, so that the rolling behavior in the finished season and the thickness tolerances of the finished rolled strip are improved accordingly.
  • the contact surfaces of the saddle are formed from a plurality of elevations spaced apart in the direction of the coil width. This further reduces the actual contact area between the saddle and the coil.
  • the saddle can preferably be made of nested stainless steel slabs with protruding ones Surveys. In contrast to the circular segment-shaped saddle, no refractory material is required to stabilize the receiving saddle according to the invention.
  • the receiving saddle is also provided with a heating device.
  • An inductive saddle heater can preferably be used.
  • a further advantageous embodiment of the coil box furnace according to the invention is that it also has a device for rotating or oscillating the coil. This configuration also contributes to an equalization of the temperature profile of the preliminary strip reinserted in the finished series.
  • the distance between the contact surfaces can be adjusted in relation to the coil diameter and / or the coil width.
  • the bearing surfaces are formed by disc rollers with circular discs spaced along the longitudinal axes of the rollers. At least one of the disc rollers can be coupled to a rotary drive for rotating or oscillating the coil.
  • Fig. 1 is a sectional side view of a
  • FIG. 2 shows a front view of a receiving saddle according to the invention with pre-strip coils of different diameters and different widths, indicated by dash-dotted lines;
  • Fig. 3 is a side view of the saddle shown in Fig. 2;
  • FIG. 4 is a top view of the receiving saddle shown in FIG. 2;
  • FIG. 5 shows a front view of a second embodiment of a receiving saddle according to the invention.
  • Fig. 6 is a plan view of the receiving saddle shown in Fig. 5.
  • the coil box furnace shown in FIG. 1 is a chamber furnace with a fixed housing part 1 and a housing part 2 which can be moved on rails.
  • the furnace is equipped with a heating device (not shown) for reheating a blanking coil 3 to the rolling temperature.
  • a circular saddle 4 is used to hold the coil.
  • the coil box furnace according to the invention has a receiving saddle, as is shown schematically for example in FIGS. 2 to 4.
  • the receiving saddle 4 ' consists of a base plate 5 with two spaced supports 6, 7, on each of which a support 8, 9 is attached.
  • the supports 8, 9 form two support surfaces 10, 11 which support the lead coil 3 tangentially on its outer circumference.
  • the support surfaces 10, 11 consist of nested stainless steel slabs with a large number of elevations 12 spaced in the direction of the coil width.
  • the elevations can also be convex.
  • the sliver coil 3, 3 'to be picked up by the saddle 4' can have different diameters and also different widths. With increasing diameter of the preliminary strip coil 3, the distance between the contact areas between the coil 3 and the contact surfaces 10, 11 also increases.
  • the saddle 4' can additionally be equipped with a heating device (not shown).
  • the heating device can preferably consist of an inductive saddle heater.
  • FIG. 5 shows a second exemplary embodiment of a receiving saddle for a coil box furnace according to the invention shown schematically.
  • the contact surfaces of the saddle 4 ′′ are formed by rotatable disc rollers 14 with circular discs 15 spaced along the longitudinal axes of the rollers.
  • the disc rollers 14 are mounted in support blocks 16, 17 which rotatably support the axes of rotation 18 or shafts 19 of the disc rollers in the spaces between the spaced circular disks 15 and have recesses in the area of the circular disks 15.
  • the distance between the support surfaces i. the distance A of the roller longitudinal axes is adjustable.
  • one of the disc rollers 14 is provided with a rotary drive having a gear 20 and an electric motor 21, by means of which the overlying coil 3 can be rotated during the heating in the coil box furnace in order to equalize the temperature profile.
  • the rotation can take place exclusively in one direction of rotation or alternatively alternately in both directions of rotation, so that the coil 3 practically executes an oscillating movement.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Induction Heating (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

The invention relates to a coilbox oven comprising a heating device for reheating a coil (3, 3') to a rolling temperature and a saddle (4') which receives the coil (3, 3') that is to be reheated. The saddle (4') is provided with two bearing surfaces (10, 11) tangentially supporting the outer periphery of the coil in order to ensure that the intermediately stored coil (3, 3') is uniformly heated wherever possible to a rolling temperature with a view to minimising the final thickness tolerances dependent on temperature.

Description

Coilboxofen Coil box furnace
Die Erfindung betrifft einen Coilboxofen mit einer Heizeinrichtung zum Wiedererwärmen eines Coils auf Walztemperatur und einem Sattel zur Aufnahme des wiederzuerwärmenden Coils.The invention relates to a coil box furnace with a heating device for reheating a coil to the rolling temperature and a saddle for receiving the coil to be reheated.
Die Erzeugung von Warmband erzwingt im Rahmen einer kostenoptimierten Fertigung zunehmend den Einsatz peripherer Einrichtungen zur Minimierung von Materialausschuß. Hierzu zählen insbesondere Einrichtungen, mit denen ein in der Prozeßlinie befindliches Vorband im Störungsfalle gegebenenfalls so konserviert werden kann, daß es nach Behebung der Störung zur Fortsetzung der Fertigung in die Prozeßlinie wieder eingeführt werden kann.In the context of cost-optimized production, the production of hot strip increasingly forces the use of peripheral devices to minimize material waste. These include, in particular, devices with which a supporting strip in the process line can be preserved in the event of a malfunction in such a way that it can be reintroduced into the process line after the malfunction has been rectified in order to continue production.
Eine Coilbox im Einlauf einer Fertigstaffel ermöglicht ein Aufwickeln und eine zeitliche Pufferung des Vorbandes vor dem Einsatz in die Fertigstaffel von etwa zehn Minuten für Weichstahlsorten. Eine derartige Anordnung einer Coilbox ist beispielsweise aus der DE-OS 2 256 030 bekannt. Edelstahlgüten, die nur in einem engen Temperaturbereich gewalzt werden können, bieten diese Reserven allerings nicht, so daß solche Vorbänder bei mehrminütigen Störungen als Coil abgelegt werden, jedoch bislang nicht wieder in die Walzlinie eingeführt werden konnten . Aus der EP 0 734 793 AI ist bekannt, Coilboxen vor und hinter einem Reversiergerüst einzusehen. Ebenso ist es aus dieser Druckschrift bekannt, einen Ofen vorzusehen, in dem das Band nach Durchlauf des Reversiergerüstes wiedererwärmt wird. Mit dem Einsatz eines Wiedererwärmungsofens an der Coilbox können, die voranstehend erwähnten Probleme beseitigt werden, indem anfallende Coilboxvorbänder auf Walztemperatur aufgeheizt und wieder in den Walzprozeß integriert werden.A coil box in the infeed of a finishing line enables the pre-strip to be wound up and buffered for around ten minutes before use in the finishing line for mild steel grades. Such an arrangement of a coil box is known for example from DE-OS 2 256 030. Stainless steel grades that can only be rolled in a narrow temperature range, however, do not offer these reserves, so that in the case of faults lasting several minutes, such pre-strips are stored as a coil, but have so far not been able to be reintroduced into the rolling line. EP 0 734 793 AI discloses viewing coil boxes in front of and behind a reversing frame. It is also known from this document to provide an oven in which the belt is reheated after passing through the reversing stand. With the use of a reheating furnace on the coil box, the problems mentioned above can be eliminated by heating the coil box pre-strips to the rolling temperature and integrating them back into the rolling process.
Ein aus der Praxis bekannter Coilboxofen ist als Kammerofen mit einem feststehenden und einem verfahrbaren Gehäuseteil ausgebildet. Der verfahrbare Gehäuseteil weist einen elektromechanischen Antrieb auf und ist auf Schienenrädern verfahrbar. Die Beheizung des Ofens erfolgt durch maanderformigen Heizleiter, die an den vier Seitenwänden des Ofens installiert und zu einzelnen Regelgruppen zusammengefaßt sind. Der nicht extra beheizte kreissegmentförmige Aufnahmesattel für das Coil steht auf einer Bodenplatte aus feuerfestem Beton und einem Gerüst aus warmfestem Stahl (vgl. Fig. 1) .A coil box furnace known from practice is designed as a chamber furnace with a fixed and a movable housing part. The movable housing part has an electromechanical drive and can be moved on rail wheels. The furnace is heated by meandering heating conductors, which are installed on the four side walls of the furnace and are combined into individual control groups. The not specially heated circular segment-shaped saddle for the coil stands on a base plate made of refractory concrete and a frame made of heat-resistant steel (see Fig. 1).
Bei diesem bekannten Coilboxofen wurden jedoch in dem in den Walzprozeß wiedereingesetzten Vorband erhebliche periodische Temperaturänderungen festgestellt, die sich auf das Walzverhalten in der Fertigstafel und auf die erreichbaren Toleranzen der Endwalzdicke ungünstig auswirken.In this known coil box furnace, however, considerable periodic temperature changes were found in the preliminary strip re-used in the rolling process, which have an unfavorable effect on the rolling behavior in the finished sheet and on the achievable tolerances of the final roll thickness.
Aufgabe der vorliegenden Erfindung ist es, einen Coilboxofen der eingangs genannten Art dahingehend zu verbessern, daß das darin zwischengespeicherte Coil möglichst gleichmäßig auf Walztemperatur aufheizbar ist, so daß sich die temperaturbedingten Enddickentoleranzen des fertiggewalzten Bandes minimieren lassen.The object of the present invention is to improve a coil box furnace of the type mentioned at the outset such that the coil temporarily stored therein can be heated as evenly as possible to the rolling temperature, so that the temperature-related final thickness tolerances of the finished rolled strip can be minimized.
Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß der Sattel mindestens zwei das Coil an dessen Außenumfang tangential abstützende Auflägeflächen aufweist, wobei der Sattel vorzugsweise trapezförmig ausgebildet ist.To achieve this object, it is proposed according to the invention that the saddle has at least two bearing surfaces which support the coil tangentially on its outer circumference, the saddle preferably being trapezoidal.
Der erfindungsgemäßen Lösung liegt die Erkenntnis zugrunde, daß die periodischen Temperaturänderungen in dem aus dem bekannten Coilboxofen entnommenen Vorband durch den kreissegmentförmigen Aufnahmesattel des Coilboxofens bedingt sind. Durch den kreisbogenförmigen Aufnahmesattel wird dem aufliegenden Band nämlich durch radiale Wärmeleitung in einem relativ großen Bereich Wärmeenergie entzogen, was zu den erwähnten periodischen Temperaturänderungen führt .The solution according to the invention is based on the knowledge that the periodic temperature changes in the preliminary strip taken from the known coil box furnace are caused by the circular saddle of the coil box furnace. Because of the circular-shaped receiving saddle, thermal energy is extracted from the overlying band by radial heat conduction in a relatively large area, which leads to the periodic temperature changes mentioned.
Bei dem erfindungsgemäßen Coilboxofen ist dagegen der Auflagebereich des Aufnahmesattels wesentlich verkleinert und damit der Wärmeverlust erheblich reduziert, so daß das Walzverhalten in der Fertigstaffel und die Dickentoleranzen des fertiggewalzten Bandes entsprechend verbessert sind.In the case of the coil box furnace according to the invention, on the other hand, the support area of the receiving saddle is significantly reduced and thus the heat loss is considerably reduced, so that the rolling behavior in the finished season and the thickness tolerances of the finished rolled strip are improved accordingly.
Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Lösung besteht darin, daß die Auflageflächen des Sattels aus einer Vielzahl in Richtung der Coilbreite beabstandeter Erhebungen gebildet sind. Hierdurch wird der tatsächliche Kontaktbereich zwischen Sattel und Coil weiter verringert . Dabei kann der Sattel vorzugsweise aus ineinandergesteckten Edelstahlbrammen mit vorstehenden Erhebungen aufgebaut sein. Zur Stabilisierung des erfindungsmäßen Aufnahmesattels ist im Gegensatz zu dem oben erwähnten kreissegmentförmigen Sattel kein Feuerfestmaterial erforderlich.An advantageous embodiment of the solution according to the invention is that the contact surfaces of the saddle are formed from a plurality of elevations spaced apart in the direction of the coil width. This further reduces the actual contact area between the saddle and the coil. The saddle can preferably be made of nested stainless steel slabs with protruding ones Surveys. In contrast to the circular segment-shaped saddle, no refractory material is required to stabilize the receiving saddle according to the invention.
Desweiteren ist es vorteilhaft, wenn, wie nach einer weiteren Ausgestaltung der erfindungsgemäßen Lösung vorgesehen, neben den Wänden des Coilboxofens auch der Aufnahmesattel mit einer Heizeinrichtung versehen ist. Dabei kann vorzugsweise eine induktive Sattelheizung verwendet werden.Furthermore, it is advantageous if, as provided for in a further embodiment of the solution according to the invention, in addition to the walls of the coil box furnace, the receiving saddle is also provided with a heating device. An inductive saddle heater can preferably be used.
Eine weitere vorteilhafte Ausgestaltung des erfindungsgemäßen Coilboxofens besteht darin, daß dieser ferner eine Vorrichtung zum Drehen oder Pendeln des Coils aufweist. Diese Ausgestaltung trägt ebenfalls zu einer Vergleichmäßigung des Temperaturprofils des in die Fertigstaffel wieder eingesetzten Vorbandes bei.A further advantageous embodiment of the coil box furnace according to the invention is that it also has a device for rotating or oscillating the coil. This configuration also contributes to an equalization of the temperature profile of the preliminary strip reinserted in the finished series.
Im Hinblick auf unterschiedliche Coildurchmesser und/oder Coilbreiten ist es auch günstig, wenn der Abstand der Auflageflächen in bezug auf den Coildurchmesser und/oder die Coilbreite einstellbar ist.With regard to different coil diameters and / or coil widths, it is also expedient if the distance between the contact surfaces can be adjusted in relation to the coil diameter and / or the coil width.
Nach einer weiteren vorteilhaften Ausgestaltung kann vorgesehen sein, daß die Auflageflächen durch Scheibenrollen mit entlang der Rollenlängsachsen beabstandeten Kreisscheiben gebildet sind. Dabei kann zum Drehen oder Pendeln des Coils mindestens eine der Scheibenrollen mit einem Drehantrieb gekoppelt sein. Die Erfindung wird nachstehend anhand einer mehrere Ausführungsbeispiele darstellenden schematischen Zeichnung näher erläutert. Im einzelnen zeigen:According to a further advantageous embodiment, it can be provided that the bearing surfaces are formed by disc rollers with circular discs spaced along the longitudinal axes of the rollers. At least one of the disc rollers can be coupled to a rotary drive for rotating or oscillating the coil. The invention is explained in more detail below on the basis of a schematic drawing illustrating several exemplary embodiments. In detail show:
Fig. 1 eine geschnittene Seitenansicht einesFig. 1 is a sectional side view of a
Coilboxofens mit einem in einem herkömmlichen Aufnahmesattel abgestützten Coil;Coil box furnace with a coil supported in a conventional saddle;
Fig. 2 eine Vorderansicht eines erfindungsgemäßen Aufnahmesattels mit durch strichpunktierte Linien angedeutete Vorbandcoils unterschiedlichen Durchmessers sowie unterschiedlicher Breite;2 shows a front view of a receiving saddle according to the invention with pre-strip coils of different diameters and different widths, indicated by dash-dotted lines;
Fig. 3 eine Seitenansicht des in Fig. 2 gezeigten Aufnahmesattels;Fig. 3 is a side view of the saddle shown in Fig. 2;
Fig. 4 eine Draufsicht auf den in Fig. 2 gezeigten Aufnahmesattel ;FIG. 4 is a top view of the receiving saddle shown in FIG. 2;
Fig. 5 eine Vorderansicht einer zweiten Ausführungsform eines erfindungsgemäßen Aufnahmesattels ; und5 shows a front view of a second embodiment of a receiving saddle according to the invention; and
Fig. 6 eine Draufsicht auf den in Fig. 5 gezeigten Aufnahmesattel .Fig. 6 is a plan view of the receiving saddle shown in Fig. 5.
Der in Fig. 1 dargestellte Coilboxofen ist ein Kammerofen mit einem feststehenden Gehäuseteil 1 und einem auf Schienen verfahrenbaren Gehäuseteil 2. Zur Wiedererwärmung eines Vorbandcoils 3 auf Walztemperatur ist der Ofen mit einer Heizeinrichtung (nicht gezeigt) ausgestattet. Zur Aufnahme des Coils dient ein kreissegmentförmiger Aufnahmesattel 4. Der erfindungsgemäße Coilboxofen weist dagegen einen Aufnahmesattel auf, wie er beispielsweise in den Figuren 2 bis 4 schematisch dargestellt ist. Wie zu erkennen ist, besteht der Aufnahmesattel 4' aus einer Grundplatte 5 mit zwei beabstandeten Stützen 6, 7, auf denen jeweils eine Auflage 8, 9 befestigt ist. Die Auflagen 8, 9 bilden zwei das Vorbandcoil 3 an dessen Außenumfang tangential abstützende Auflageflächen 10, 11. Die Auflageflächen 10, 11 bestehen dabei aus ineinandergesteckten Edelstahlbrammen mit einer Vielzahl in Richtung der Coilbreite beabstandeter Erhebungen 12. Die Erhebungen 12, die durch parallel zur Umfangsrichtung des Coils 3 verlaufende Nuten 13 gebildet sind, haben jeweils im wesentlichen ebene Auflägeflächen. Alternativ können die Erhebungen auch konvex ausgebildet sein.The coil box furnace shown in FIG. 1 is a chamber furnace with a fixed housing part 1 and a housing part 2 which can be moved on rails. The furnace is equipped with a heating device (not shown) for reheating a blanking coil 3 to the rolling temperature. A circular saddle 4 is used to hold the coil. The coil box furnace according to the invention, on the other hand, has a receiving saddle, as is shown schematically for example in FIGS. 2 to 4. As can be seen, the receiving saddle 4 'consists of a base plate 5 with two spaced supports 6, 7, on each of which a support 8, 9 is attached. The supports 8, 9 form two support surfaces 10, 11 which support the lead coil 3 tangentially on its outer circumference. The support surfaces 10, 11 consist of nested stainless steel slabs with a large number of elevations 12 spaced in the direction of the coil width. The elevations 12, which are parallel to the circumferential direction of the coil 3 extending grooves 13 are formed, each have substantially flat bearing surfaces. Alternatively, the elevations can also be convex.
Wie in den Figuren 2 und 3 durch strichpunktierte Linien angedeutet ist, kann das vom Sattel 4' aufzunehmende Vorbandcoil 3, 3' unterschiedliche Durchmesser und auch unterschiedliche Breiten aufweisen. Mit zunehmenden Durchmesser des Vorbandcoils 3 nimmt auch der Abstand der Kontaktbereiche zwischen dem Coil 3 und den Auflageflächen 10, 11 zu.As indicated in FIGS. 2 and 3 by dash-dotted lines, the sliver coil 3, 3 'to be picked up by the saddle 4' can have different diameters and also different widths. With increasing diameter of the preliminary strip coil 3, the distance between the contact areas between the coil 3 and the contact surfaces 10, 11 also increases.
Um einen Wärmeverlust über den Aufnahmesattel 4' gänzlich zu verhindern, kann der Sattel 4' zusätzlich mit einer Heizeinrichtung (nicht gezeigt) ausgestattet sein. Die Heizeinrichtung kann dabei vorzugsweise aus einer induktiven Sattelheizung bestehen.In order to completely prevent heat loss via the receiving saddle 4 ', the saddle 4' can additionally be equipped with a heating device (not shown). The heating device can preferably consist of an inductive saddle heater.
In Fig. 5 ist ein zweites Ausführungsbeispiel eines Aufnahmesattels für einen erfindungsgemäßen Coilboxofen schematisch dargestellt. Im Gegensatz zu dem in den Figuren 2 bis 4 gezeigten Ausführungsbeispiel sind hier die Auflageflächen des Sattels 4'' durch drehbare Scheibenrollen 14 mit entlang der Rollenlängsachsen beabstandeten Kreisscheiben 15 gebildet. Die Scheibenrollen 14 sind in Stützblöcken 16, 17 gelagert, die die Drehachsen 18 bzw. Wellen 19 der Scheibenrollen in den Zwischenräumen der beabstandeten Kreisscheiben 15 drehbar abstützen und im Bereich der Kreisscheiben 15 Ausnehmungen aufweisen.5 shows a second exemplary embodiment of a receiving saddle for a coil box furnace according to the invention shown schematically. In contrast to the exemplary embodiment shown in FIGS. 2 to 4, the contact surfaces of the saddle 4 ″ are formed by rotatable disc rollers 14 with circular discs 15 spaced along the longitudinal axes of the rollers. The disc rollers 14 are mounted in support blocks 16, 17 which rotatably support the axes of rotation 18 or shafts 19 of the disc rollers in the spaces between the spaced circular disks 15 and have recesses in the area of the circular disks 15.
Um eine optimale Auflage des jeweiligen Coils 3 in Abhängigkeit des Coildurchmessers erzielen zu können, ist der Abstand der Auflageflächen, d.h. der Abstand A der Rollenlängsachsen einstellbar. Ferner ist eine der Scheibenrollen 14 mit einem ein Getriebe 20 und einen Elektromotor 21 aufweisenden Drehantrieb versehen, mittels dem das aufliegende Coil 3 während des Aufheizens im Coilboxofen zur Vergleichmäßigung des Temperaturprofils gedreht werden kann. Die Drehung kann dabei ausschließlich in einer Drehrichtung oder alternativ auch abwechselnd in beiden Drehrichtungen erfolgen, so daß das Coil 3 praktisch eine Pendelbewegung ausführt . In order to achieve an optimal support of the respective coil 3 depending on the coil diameter, the distance between the support surfaces, i. the distance A of the roller longitudinal axes is adjustable. Furthermore, one of the disc rollers 14 is provided with a rotary drive having a gear 20 and an electric motor 21, by means of which the overlying coil 3 can be rotated during the heating in the coil box furnace in order to equalize the temperature profile. The rotation can take place exclusively in one direction of rotation or alternatively alternately in both directions of rotation, so that the coil 3 practically executes an oscillating movement.

Claims

A n s p r ü c h e Expectations
1. Coilboxofen mit einer Heizeinrichtung zum Wiedererwärmen eines Coils (3) auf Walztemperatur und einem Sattel (4', 4'') zur Aufnahme des wiederzuerwärmenden Coils, d a d u r c h g e k e n n z e i c h n e t , daß der Sattel1. Coil box furnace with a heating device for reheating a coil (3) to the rolling temperature and a saddle (4 ', 4' ') for receiving the coil to be rewarmed, so that the saddle
(4', 4'') mindestens zwei das Coil (3, 3') an dessen Außenumfang tangential abstützende Auflageflächen (10, 11) aufweist.(4 ', 4' ') has at least two bearing surfaces (10, 11) which tangentially support the coil (3, 3') on its outer circumference.
2. Coilboxofen nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß der Sattel (4', 4'') trapezförmig ausgebildet ist.2. Coilboxofen according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the saddle (4 ', 4' ') is trapezoidal.
3. Coilboxofen nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß die Auflageflächen (10, 11) aus einer Vielzahl von in Richtung der Coilbreite beabstandeten Erhebungen (12) gebildet sind.3. Coil box furnace according to claim 1 or 2, so that the support surfaces (10, 11) are formed from a plurality of elevations (12) spaced apart in the direction of the coil width.
4. Coilboxofen nach einem der vorstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß der Sattel (4', 4'') aus ineinandergesteckten Edelstahlbrammen mit vorstehenden Erhebungen (12) aufgebaut ist . 4. Coil box furnace according to one of the preceding claims, characterized in that the saddle (4 ', 4'') is constructed from nested stainless steel slabs with protruding elevations (12).
5. Coilboxofen nach einem der vorstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß auch der Sattel (4', 4'') mit einer Heizeinrichtung versehen ist .5. Coil box furnace according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the saddle (4 ', 4' ') is provided with a heating device.
6. Coilboxofen nach einem der vorstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß dieser ferner eine Vorrichtung (14 bis 21) zum Drehen oder Pendeln des Coils (3) aufweist.6. Coil box furnace according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that this further comprises a device (14 to 21) for rotating or oscillating the coil (3).
7. Coilboxofen nach einem der vorstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß der Abstand der Auflageflächen (10, 11) in bezug auf den Coildurchmesser und/oder die Coilbreite einstellbar ist.7. Coil box furnace according to one of the preceding claims, that the distance between the bearing surfaces (10, 11) is adjustable with respect to the coil diameter and / or the coil width.
8. Coilboxofen nach einem der vorstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , daß die Auflageflächen (10, 11) durch Scheibenrollen (14) mit entlang der Rollenlängsachsen beabstandeten Kreisscheiben (15) gebildet sind.8. Coil box furnace according to one of the preceding claims, that the supporting surfaces (10, 11) are formed by disk rollers (14) with circular disks (15) spaced along the longitudinal axes of the rollers.
9. Coilboxofen nach Anspruch 8, d a d u r c h g e k e n n z e i c h n e t , daß zum Drehen oder Pendeln des Coils (3) mindestens eine der Scheibenrollen (14) durch einen Drehantrieb (20, 21) antreibbar ist. 9. Coilboxofen according to claim 8, d a d u r c h g e k e n e z e c h n e t that at least one of the disc rollers (14) can be driven by a rotary drive (20, 21) for rotating or oscillating the coil (3).
EP98955579A 1997-11-18 1998-11-14 Coil box oven Expired - Lifetime EP1032716B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19750998A DE19750998C1 (en) 1997-11-18 1997-11-18 Coil box furnace
DE19750998 1997-11-18
PCT/EP1998/007298 WO1999025883A1 (en) 1997-11-18 1998-11-14 Coil box oven

Publications (2)

Publication Number Publication Date
EP1032716A1 true EP1032716A1 (en) 2000-09-06
EP1032716B1 EP1032716B1 (en) 2002-09-04

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Application Number Title Priority Date Filing Date
EP98955579A Expired - Lifetime EP1032716B1 (en) 1997-11-18 1998-11-14 Coil box oven

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EP (1) EP1032716B1 (en)
JP (1) JP2001523762A (en)
AR (1) AR014024A1 (en)
AT (1) ATE223508T1 (en)
AU (1) AU734790B2 (en)
CA (1) CA2310411A1 (en)
DE (2) DE19750998C1 (en)
TW (1) TW490491B (en)
WO (1) WO1999025883A1 (en)
ZA (1) ZA9810397B (en)

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Publication number Priority date Publication date Assignee Title
KR101263853B1 (en) 2011-07-18 2013-05-13 주식회사 포스코 Specimen automatic charging apparatus for pass aging heat treatment and the method of specimen temperature homonization for using that

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Publication number Priority date Publication date Assignee Title
DE609979C (en) * 1929-08-11 1935-02-27 Heimsoth & Vollmer G M B H Device for heating heavy work pieces
GB1373375A (en) * 1971-11-15 1974-11-13 Canada Steel Co Method for rolling hot metal workpieces
DE2613459A1 (en) * 1976-03-30 1977-10-13 Schloemann Siemag Ag Arrangement for avoiding scrap in a rolling mill - for wide strip material, during break down of the prodn. line and/or the strip winding arrangement
GB2167170B (en) * 1984-11-21 1988-05-18 Salem Furnace Heat treatment of coils of metal
US5383651A (en) * 1994-02-07 1995-01-24 Pyrotek, Inc. Aluminum coil annealing tray support pad
DE4434370C2 (en) * 1994-09-15 1998-05-28 Mannesmann Ag Furnace plant as a buffer behind a thin slab caster
DE19512953A1 (en) * 1995-03-28 1996-10-02 Mannesmann Ag Method and device for producing hot-rolled steel strip

Non-Patent Citations (1)

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Title
See references of WO9925883A1 *

Also Published As

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JP2001523762A (en) 2001-11-27
DE59805451D1 (en) 2002-10-10
EP1032716B1 (en) 2002-09-04
ZA9810397B (en) 1999-05-13
WO1999025883A1 (en) 1999-05-27
ATE223508T1 (en) 2002-09-15
AU1235299A (en) 1999-06-07
CA2310411A1 (en) 1999-05-27
AU734790B2 (en) 2001-06-21
AR014024A1 (en) 2001-01-31
TW490491B (en) 2002-06-11
DE19750998C1 (en) 1999-08-19

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