DE3004805C2 - Method and device for replacing support rollers in roller hearth continuous annealing furnaces - Google Patents

Method and device for replacing support rollers in roller hearth continuous annealing furnaces

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Publication number
DE3004805C2
DE3004805C2 DE3004805A DE3004805A DE3004805C2 DE 3004805 C2 DE3004805 C2 DE 3004805C2 DE 3004805 A DE3004805 A DE 3004805A DE 3004805 A DE3004805 A DE 3004805A DE 3004805 C2 DE3004805 C2 DE 3004805C2
Authority
DE
Germany
Prior art keywords
replaced
roller
support rollers
furnace
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE3004805A
Other languages
German (de)
Other versions
DE3004805A1 (en
Inventor
Karl Ing.(grad.) 5870 Hemer Lefor
Horst Ing.(Grad.) Nickel
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.)
Sundwiger Eisenhuette Maschinenfabrik Grah & Co 5870 Hemer De
Original Assignee
Sundwiger Eisenhuette Maschinenfabrik Grah & Co 5870 Hemer De
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6094171&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3004805(C2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sundwiger Eisenhuette Maschinenfabrik Grah & Co 5870 Hemer De filed Critical Sundwiger Eisenhuette Maschinenfabrik Grah & Co 5870 Hemer De
Priority to DE3004805A priority Critical patent/DE3004805C2/en
Priority to DE8181100181T priority patent/DE3176595D1/en
Priority to EP81100181A priority patent/EP0033845B1/en
Publication of DE3004805A1 publication Critical patent/DE3004805A1/en
Application granted granted Critical
Publication of DE3004805C2 publication Critical patent/DE3004805C2/en
Expired 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
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/562—Details
    • C21D9/563—Rolls; Drums; Roll arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types

Landscapes

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

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Auswechseln von Tragrollen in Rollenherd-Durehlaufglühöfen wpjirend des laufenden Ofenbetriebs.The invention relates to a method and a device for replacing support rollers in Roller-hearth continuous annealing furnaces during the running Furnace operation.

In Rollenherd-Durchlaufglühöfen dieser Art wird das Glühgut über drehbar angetriebene Tragrollen, die beidseitig in Lagern an den Seitenwänden des Ofens gelagert sind, durch den Ofen geführt und dabei geglüht. Wenn ein vorzeitiger Austausch einer beschädigten Tragrolle erforderlich wurde, mußte bisher der Ofen stillgesetzt werden, um den Tragrollen-Wechsel durchzuführen. Zuvor mußte das Glühgut aus dem Ofen entfernt werden, vgl. DE-AS 15 08 508. Falls dies nicht möglich war, z. B. wegen zu großer Restlänge des Glühguts, wurde der während des Tragrollen-Wechsels im Ofen befindliche Teil des GlUhguts unzulässig lange erhitzt und konnte später nicht verwendet werden. Durch Produktionsstillstand während des Tragrollen-Wechsels war dieser verhältnismäßig kostenaufwendig.In roller hearth continuous annealing furnaces of this type, the material to be annealed is via rotatably driven support rollers which are stored on both sides in bearings on the side walls of the furnace, passed through the furnace and annealed in the process. If a damaged idler roller had to be replaced early, the furnace had to be used up until now be stopped in order to carry out the idler change. The material to be annealed had to be taken out of the furnace beforehand can be removed, see DE-AS 15 08 508. If this was not possible, e.g. B. because of too great a remaining length of the Incandescent material, the part of the incandescent material that was in the furnace during the change of the idler roller became inadmissibly long heated and could not be used later. Due to a production standstill while the idler roller is being changed this was relatively expensive.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs beschriebenen Art zu schaffen, die einen Tragrollen-Wechsel während des laufenden Ofenbetriebs, also ohne Unterbrechung der Förderung des Glühguis durch den Ofen, ermöglichen.The present invention is based on the object, a method and a device of to create the type described at the beginning, which allows a change of carrier rollers while the furnace is in operation, that is, without interrupting the conveyance of the glow guis through the furnace.

Zur Lösung dieser Aufgabe wird erfindungsgemäß ein Verfahren und eine Vorrichtung mit den in den Ansprüchen angegebenen Merkmalen vorgeschlagen. Für die praktische Ausführung des erfindungsgemäßen Verfahrens und der Vorrichtung gibt es verschiedene Varianten, von denen die wichtigsten im Zusammenhang mit den in der Zeichnung dargestellten Ausfüh-To achieve this object, the invention provides a method and a device with the in the Claims indicated features proposed. For the practical implementation of the invention There are various variants of the method and the device, the most important of which are related with the execution shown in the drawing

rungsbeispjelen erläutert werden. Der sich durch die Erfindung ergebende Vorteil liegt darin, daß durch verhältnismäßig einfache Maßnahmen eine Fortsetzung des Ofenbetriebs während des Tragrollen-Wechsels ermöglicht wird. Der Tragrollen-Wechsel führt damit nicht zu sinem Produktionsausfall und ist daher kostengünstiger als das bisher bekannte Verfahren /um Wechsel der Tragrollen. In der Zeichnung zeigtrungsbeispjelen are explained. Who is going through the The advantage resulting from the invention is that it can be continued by relatively simple measures the furnace operation is enabled while the idler roller is being changed. The idler change leads to it does not result in loss of production and is therefore more cost-effective than the previously known method / um Change of idlers. In the drawing shows

Fig. I in schernatischer Seitenansicht den Ofeu! im normalen Betrieb,Fig. I in a Schernatic side view the Ofeu! in the normal operation,

F i g. 2 ein Ausführungsbeispiel für den Wechsel einer Tragrolle,F i g. 2 shows an embodiment for changing a Conveyor roller,

Fig.3 ein weiteres Ausführungsbeispiel für den Wechsel einer Tragrolle und3 shows a further embodiment for changing a support roller and

F i g. 4 ein weiteres Ausführungsbeispiel,F i g. 4 another embodiment,

F i g. 5 einen Teilquerschnitt durch den Ofen.F i g. 5 shows a partial cross-section through the furnace.

Gemäß Fig. 1 liegen die achsparallel im Ofen 1 drehbar angetriebenen Tragrollen 2 in einer Ebene und fördern ein Band 3 als Glühgut in Pfeilrichtung 4 kontinuierlich durch den Ofen 1 hindurch, wo es geglüht wird.According to Fig. 1, the axially parallel in the furnace 1 rotatably driven support rollers 2 are in a plane and convey a strip 3 as annealing material in the direction of arrow 4 continuously through the furnace 1, where it is annealed will.

Gemäß dem in Fig. 2 dargestellten Ausführungsbeispiel sind die der auszuwechselnden Tragrolle 2' benachbarten Tragrollen 2" so weit über ihre normale Arbeitsstellung angehoben, daß das Band 3 außer Kontakt mit der Tragrolle 2' kommt, die dann stillgesetzt und ohne fieeintrachtigung des laufenden Ofenbetriebs aus dem Ofen 1 herausgenommen und durch eine neu eingesetzte Tragrolle 2 ersetzt werden kann. Nach Abschluß des Tragrollen-Wechsels werden die Tragrollen 2" aus ihrer angehobenen Lage wieder in die Arbeitsstellung abgesenkt, wodurch das Band 3 wieder in Kontakt mit der ausgewechselten Tragrolle 2' kommt.According to the embodiment shown in FIG the support rollers 2 "adjacent to the support roller 2 'to be replaced are so far above their normal Raised working position that the belt 3 comes out of contact with the support roller 2 ', which then shut down and without approval of the current Oven operation can be removed from the oven 1 and replaced by a newly inserted support roller 2 can. After the end of the conveyor roller change, the conveyor rollers 2 "are back in their raised position the working position lowered, whereby the belt 3 again in contact with the replaced support roller 2 ' comes.

Bei dem in F i g. 3 dargestellten Ausführungsbeispiel wird die auszuwechselnde Tragrolle 2' so weit abgesenkt, bis sie außer Kontakt mit dem zu glühenden Band 3 kommt, worauf sie gegen eine neue Tragrolle ausgewechselt werden kann, ohne u>ß der laufende Betrieb gestört wird.In the case of the FIG. 3 illustrated embodiment, the supporting roller 2 'to be replaced is so far lowered until it comes out of contact with the glowing band 3, whereupon it against a new idler roller can be replaced without disrupting ongoing operations.

Fig.4 zeigt ein weiteres Ausführungsbeispiel, bei dem das zu glühende Band 3 mittels einer Druckgas-, etwa Druckluft, erzeugenden, unterhalb der Tragrollen angeordneten, gegebenenfalls in Längsrichtung des Ofens 1 verschiebbaren Vorrichtung 5 im Bereich der auszuwechselnden Tragrolle 2' von dieser abgehoben wird, wonach sie ausgewechseil werden kann.4 shows a further embodiment in which the band 3 to be glowed is lifted off the conveyor roller 2 'to be replaced by means of a device 5 which generates compressed gas, e.g. , after which it can be replaced.

In F i g. 5 ist eine Hub- und/oder Absenkvorrichtung 6 angedeutet, mittels der das Tragrollen-Lager 7 und gegebenenfalls der Drehantrieb 8 der auszuwechselnden Tragrolle 2' nach Lösen der Lagerbefestigung an der Seitenwand des Ofens I um den Betrag h angehoben oder abgesenkt werden kann. Hierzu muß ein entsprechend großer Ausschnitt in der Seitenwand des Ofens I gebildet sein.In Fig. 5 a lifting and / or lowering device 6 is indicated, by means of which the support roller bearing 7 and possibly the rotary drive 8 of the support roller 2 'to be replaced can be raised or lowered by the amount h after loosening the bearing fastening on the side wall of the furnace I. For this purpose, a correspondingly large cutout must be made in the side wall of the furnace I.

Die in Fig. 5 gezeigte Lage kann die abgesenkte Stellung der auszuwechselnden Tragrolle 2' sein, jedoch auch die Ausgangsstellung der /u der auszuwechselnden Tragrolle 2' benachbarten Tragrollen 2" sein, die vor dem Tragrollen-Wechsel dann um den Betrag h angehoben werden. Dieses Anheben der Tragrollen 2" kann auch mittels Kran erfolgen, wodurch eine besondere Hubvorrichtung entbehrlich wird.The position shown in Fig. 5 can be the lowered position of the supporting roller 2 'to be replaced, but also the starting position of the supporting rollers 2 "adjacent to the supporting roller 2' to be replaced, which are then raised by the amount h before the supporting roller change. This lifting of the support rollers 2 ″ can also be carried out by means of a crane, which means that a special lifting device is unnecessary.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims (4)

Patentansprüche;Claims; 1. Verfahren zum Auswechseln von Tragrollen in Rollenherd-Durehlaufglühöfen während des laufenden Ofenbetriebs insbesondere für Bandmaterial als Glühgut,dadurch gekennzeichnet, daß für den Rollenwechsel das im Bereich der auszuwechselnden Tragrolle befindliche Glühgut durch Anheben des Glühgutes selbst oder durch Absenken der auszuwechselnden Tragrolle außer Kontakt mit dieser Tragrolle gebracht wird.1. Procedure for replacing idlers in roller hearth annealing furnaces while the furnace is running Oven operation in particular for strip material as annealing material, characterized in that for the role change the annealing material located in the area of the carrying roller to be replaced by lifting it the annealing material itself or by lowering the supporting roller to be replaced out of contact with this idler is brought. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß mindestens eine der beiden der auszuwechselnden Tragrolle benachbarten Tragrollen so weit angehoben wird, bis das Glühgut außer Kontakt mit der auszuwechselnden Tragrolle kommt.2. The method according to claim 1, characterized in that that at least one of the two supporting rollers adjacent to the supporting roller to be replaced is raised until the annealing material is out of contact with the supporting roller to be replaced comes. 3. Vorrichtung zur Ausübung des Verfahrens nach Anspruch 1, gekennzeichnet durch das Glühgut (.3) von der auszuwechselnden Tragrolle (2') abhebende Druckgasdüsen (5).3. Device for performing the procedure according to Claim 1, characterized by the annealing material (.3) lifting off from the supporting roller (2 ') to be replaced Pressurized gas nozzles (5). 4. Vorrichtung zur Ausübung des Verfahrens nach Anspruch 2, gekennzeichnet durch an den Lagern (7) und/oder Drehantrieben (8) der Tragrollen (2) angreifende Hub- bzw. Absenkvorrichtungen (6).4. Device for performing the method according to claim 2, characterized by on the bearings (7) and / or rotary drives (8) of the support rollers (2) engaging lifting or lowering devices (6).
DE3004805A 1980-02-09 1980-02-09 Method and device for replacing support rollers in roller hearth continuous annealing furnaces Expired DE3004805C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE3004805A DE3004805C2 (en) 1980-02-09 1980-02-09 Method and device for replacing support rollers in roller hearth continuous annealing furnaces
DE8181100181T DE3176595D1 (en) 1980-02-09 1981-01-13 Process and apparatus for changing transport rollers in a roller-hearth furnace
EP81100181A EP0033845B1 (en) 1980-02-09 1981-01-13 Process and apparatus for changing transport rollers in a roller-hearth furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3004805A DE3004805C2 (en) 1980-02-09 1980-02-09 Method and device for replacing support rollers in roller hearth continuous annealing furnaces

Publications (2)

Publication Number Publication Date
DE3004805A1 DE3004805A1 (en) 1981-10-01
DE3004805C2 true DE3004805C2 (en) 1981-12-10

Family

ID=6094171

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3004805A Expired DE3004805C2 (en) 1980-02-09 1980-02-09 Method and device for replacing support rollers in roller hearth continuous annealing furnaces
DE8181100181T Expired DE3176595D1 (en) 1980-02-09 1981-01-13 Process and apparatus for changing transport rollers in a roller-hearth furnace

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8181100181T Expired DE3176595D1 (en) 1980-02-09 1981-01-13 Process and apparatus for changing transport rollers in a roller-hearth furnace

Country Status (2)

Country Link
EP (1) EP0033845B1 (en)
DE (2) DE3004805C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230115A1 (en) * 1982-08-13 1984-02-16 Ruhrgas Ag, 4300 Essen METHOD FOR REPLACING THE ROLLS OF A CONTINUOUS ROLLER OVEN AND OVEN FOR CARRYING OUT THE METHOD

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385945A (en) * 1981-11-19 1983-05-31 Armco Inc. Lift-off means and method for use with a horizontal continuous hearth roll furnace for the treatment of metallic strip
DE3735949A1 (en) * 1987-10-23 1989-05-03 Ruhrgas Ag METHOD AND DEVICE FOR CLEANING THE SURFACE OF OVEN ROLLS OF A ROLLER OVEN
DE8809428U1 (en) * 1988-07-23 1988-09-08 Drever International S.A., Liègè Device for the transport of sheet metal strip, especially stainless steel strip, in sagging furnaces of annealing and pickling lines
DE4203395C2 (en) * 1992-02-06 1993-11-25 Didier Ofu Eng Method for guiding thin slabs, sheets and steel strips to be heated in high-temperature roller hearth furnaces and high-temperature roller hearth furnace for carrying out the method
FR2760077B1 (en) * 1997-02-27 1999-04-30 Stein Heurtey DEVICE FOR ENSURING THE REPLACEMENT OF A TAPE SUPPORT ROLLER IN A HEAT TREATMENT OVEN
AT14592U1 (en) * 2015-01-20 2016-02-15 Loi Thermprocess Gmbh Bearing roller changing device
EP3048404B1 (en) 2015-01-20 2018-04-11 LOI Thermprocess GmbH Support roller exchange device and method for exchanging support rollers
EP3048405A1 (en) 2015-01-20 2016-07-27 LOI Thermprocess GmbH Support roller exchange device
US10830536B2 (en) 2018-03-15 2020-11-10 Ford Motor Company Roller transport assembly for transporting rollers to and from a roller hearth furnace

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872174A (en) * 1954-01-08 1959-02-03 Drever Co Roller furnace construction and method of maintenance operation
DE1232997B (en) * 1963-05-09 1967-01-26 Ofu Ofenbau Union G M B H Roller hearth for a roller hearth furnace for the heat treatment of, in particular, metallic goods
US3328861A (en) * 1965-06-24 1967-07-04 Pullman Inc Roller hearth tunnel kilns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230115A1 (en) * 1982-08-13 1984-02-16 Ruhrgas Ag, 4300 Essen METHOD FOR REPLACING THE ROLLS OF A CONTINUOUS ROLLER OVEN AND OVEN FOR CARRYING OUT THE METHOD

Also Published As

Publication number Publication date
DE3004805A1 (en) 1981-10-01
DE3176595D1 (en) 1988-02-11
EP0033845A1 (en) 1981-08-19
EP0033845B1 (en) 1988-01-07

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