EP2488811A1 - Device for heat-treating sheet metal strips - Google Patents

Device for heat-treating sheet metal strips

Info

Publication number
EP2488811A1
EP2488811A1 EP10770943A EP10770943A EP2488811A1 EP 2488811 A1 EP2488811 A1 EP 2488811A1 EP 10770943 A EP10770943 A EP 10770943A EP 10770943 A EP10770943 A EP 10770943A EP 2488811 A1 EP2488811 A1 EP 2488811A1
Authority
EP
European Patent Office
Prior art keywords
bearing
support
journal
sheet metal
sliding layer
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
EP10770943A
Other languages
German (de)
French (fr)
Other versions
EP2488811B1 (en
Inventor
Robert Ebner
Eduard Morbitzer
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.)
Ebner Industrieofenbau GmbH
Original Assignee
Ebner Industrieofenbau GmbH
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 Ebner Industrieofenbau GmbH filed Critical Ebner Industrieofenbau GmbH
Publication of EP2488811A1 publication Critical patent/EP2488811A1/en
Application granted granted Critical
Publication of EP2488811B1 publication Critical patent/EP2488811B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F27D99/0035—Heating indirectly through a radiant surface

Definitions

  • the invention relates to a device for heat treatment of metal strip with at least one jet pipe unit, the three lying in a common plane parallel to the sheet metal strip tubes, namely a connectable to a burner center tube and two connected at both ends to the central tube via elbows outer tubes , And with a support on the opposite side of the burner tube unit for a connected to the two pipe bends between the central tube on the one hand and the two outer tubes on the other hand bearing pin which engages axially displaceable in a pin receiving the support.
  • the bearing of the jet pipe unit is to be designed so that at least the thermal expansions of the pipes in the axial direction are taken into account.
  • the central tube between the burner and the outer tubes is held axially in a pivot bearing, while at the opposite end of the jet tube unit, a usually hollow bearing pin, which is welded to the two connecting the ends of the central tube to the ends of the outer tubes pipe bends, axially displaceable in supported by a support.
  • the invention is therefore based on the object, a device of the type described for the heat treatment of metal bands in such a way that damage to the jet pipe unit due to thermal expansion can be largely excluded.
  • the invention solves the problem set by the fact that between the pin receiving the support and the bearing pin a sliding layer forming insert is provided in the support region of the journal.
  • the sliding layer is exposed to a considerable wear due to the relatively high weight load through the nozzle unit, so that a replaceable insert forming the overlay, brings special benefits when it comes to renew the overlay. It only needs to be removed and re-coated or replaced with a new insert.
  • FIG. 1 shows a device according to the invention for the heat treatment of sheet metal strips in sections in the area of the jet pipe unit in a simplified side view
  • Fig. 3 is a section along the line III-III of Fig. 2. Way to carry out the invention
  • At least one jet pipe unit 1 which comprises a center pipe 2 and two parallel outer pipes 3 lying in a common axial plane with the center pipe 2.
  • the outer tubes 3 are connected to the central tube. 2 each fluidly connected via end pipe bends 4.
  • the hot exhaust gases flowing into the central pipe 2 from a burner connected to an extension 5 of the center pipe 2 are thus partially recirculated via the two outer pipes 3.
  • radiant heat a dash-dotted lines indicated sheet metal strip 6 is heated, which is guided parallel to the common axial plane of the tubes 2, 3, in a feed direction 7, which is transverse to the tube axes.
  • the jet pipe unit 1 is mounted on both sides of the tubes 2 and 3, so that there is a largely uniform distribution of the weight load on the two lateral supports. While the extension 5 of the central tube 2 receiving, not shown for reasons of clarity support the jet pipe unit 1 sets axially, the opposite support 8 supports the nozzle unit 1 axially slidably. For this purpose, the jet pipe unit 1 carries at the opposite end of the extension 5 of the central tube 2 a usually tubular bearing pin 9 which is axially displaceably supported in a sleeve-shaped pin receptacle 10.
  • this sleeve-shaped pin receptacle 10 is arranged on a support plate 11, which is attached to a wall 12 of the nozzle unit receiving the nozzle unit 1 and projects through the thermal insulation 13 of the furnace wall 12 into the furnace chamber.
  • a heat-insulating plug 14 within the pin receptacle 10 and the support 8 is provided with a corresponding thermal insulation.
  • the bearing pin 9 can be supported slidably in the pin receptacle 10 even at high temperature loads
  • the sleeve-shaped pin receptacle 10 is provided with a sliding layer 15 forming insert 16, as shown in FIGS. 2 and 3, on which the pin 9 rests, so that the sliding of the Bearing 9 is secured against the support 8 by a corresponding sliding layer 15.
  • This insert 16 is held by means of secured plug-in pin 17 in the sleeve-shaped pin receptacle 10 and can therefore be changed in a simple manner, if the wear of makes this insert 16 formed sliding layer 15 makes such a change required.
  • the sliding layer 15 of the insert 16 must be designed to be temperature resistant.
  • a sliding layer 15 made of a ceramic material satisfies these conditions in an advantageous manner. The required for the compensation of the thermal expansion of the tubes 2, 3 of the jet pipe unit 1 axial relative movement between the bearing pin 9 and the support 8 is thus ensured even at the high loads occurring by the weight of the nozzle unit 1 and the temperature conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Details (AREA)
  • Gas Burners (AREA)

Abstract

The invention relates to a device for heat-treating sheet metal strips (6), comprising at least one steel pipe unit (1), which has three pipes lying in a common plane parallel to the sheet metal strip (6), namely a middle pipe (2) that can be connected to a burner and two outer pipes (3) that are connected at both ends to the middle pipe (2) by means of pipe bends (4), and a bearing (8) on the side of the steel pipe unit (1) opposite the burner for a bearing journal (9) connected to the two pipe bends (4) between the middle pipe (2) on the one side and the two outer pipes (3) on the other side, the bearing journal engaging in a journal receptacle (10) of the bearing (8) in an axially slidable manner. In order to create advantageous design conditions, an insert (16) forming a sliding layer (15) is provided between the journal receptacle (10) of the bearing (8) and the bearing journal (9) in the contact area of the bearing journal (9).

Description

Vorrichtung zur Wärmebehandlung von Blechbändern  Apparatus for heat treatment of metal strips
Technisches Gebiet Technical area
Die Erfindung bezieht sich auf eine Vorrichtung zur Wärmebehandlung von Blechbändern mit wenigstens einer Strahlrohreinheit, die drei in einer gemeinsamen, zum Blechband parallelen Ebene liegende Rohre, nämlich ein an einen Brenner anschließbares Mittelrohr und zwei an beiden Enden mit dem Mittelrohr über Rohrbögen verbundene Außenrohre, aufweist, und mit einem Auflager auf der dem Brenner gegenüberliegenden Seite der Strahlrohreinheit für einen mit den beiden Rohrbögen zwischen dem Mittelrohr einerseits und den beiden Außenrohren anderseits verbundenen Lagerzapfen, der axial verschiebbar in eine Zapfenaufnahme des Auflagers eingreift. The invention relates to a device for heat treatment of metal strip with at least one jet pipe unit, the three lying in a common plane parallel to the sheet metal strip tubes, namely a connectable to a burner center tube and two connected at both ends to the central tube via elbows outer tubes , And with a support on the opposite side of the burner tube unit for a connected to the two pipe bends between the central tube on the one hand and the two outer tubes on the other hand bearing pin which engages axially displaceable in a pin receiving the support.
Stand der Technik State of the art
Zur Wärmebehandlung von Blechbändern ist es bekannt (DE 20 2008 009 065 U1), mit Hilfe von Brennern beheizbare Strahlrohreinheiten vorzusehen, die zwei von einem an den Brenner angeschlossenen Mittelrohr ausgehende, parallel zum Mittelrohr in einer gemeinsamen Axialebene liegende Außenrohre aufweisen, sodass mit Hilfe der endseitig über Rohrbögen mit dem Mittelrohr verbundenen Außenrohre jeweils ein Teilstrom der in das Mittelrohr strömenden heißen Abgase des Brenners im Kreislauf geführt werden kann. Das zu behandelnde Blechband, das parallel zur gemeinsamen Axialebene der Rohre der Strahlrohreinheit mit einer quer zu den Rohrachsen verlaufenden Vor- schubrichtung gefördert wird, wird über die von den Rohren der Strahlrohreinheit abgestrahlte Wärmestrahlung erwärmt. Wegen der hohen Temperaturen der Strahlrohre ist die Lagerung der Strahlrohreinheit so auszugestalten, dass zumindest die Wärmedehnungen der Rohre in axialer Richtung berücksichtigt werden. Zu diesem Zweck wird das Mittelrohr zwischen dem Brenner und den Außenrohren in einem Schwenklager axial festgehalten, während am gegenüberliegenden Ende der Strahlrohreinheit ein üblicherweise hohler Lagerzapfen, der an den beiden die Enden des Mittelrohrs mit den Enden der Außenrohre verbindenden Rohrbögen angeschweißt ist, axial verschiebbar in einem Auflager abgestützt wird. Aufgrund der hohen Behandlungstemperaturen von beispielsweise 750° C bis 900° C leidet die Festigkeit auch von warmfesten Stählen, was die Gefahr eines Festbackens des Lagerzapfens im Auflager mit sich bringt. Mit dem Verhindern der axialen Zapfenbewegung im Auflager kommt es zu Verformungen der Strahlrohre und in Folge davon zu Beschädigungen, die einen Stillstand der Vorrichtung bedingen können. For heat treatment of metal strips, it is known (DE 20 2008 009 065 U1) to provide by means of burners heatable jet pipe units which have two outgoing from a central tube connected to the burner, parallel to the central tube in a common axial plane outer tubes, so with the aid of A partial flow of the hot exhaust gases of the burner flowing into the central tube can be circulated in each case at the ends via tube bends connected to the central tube. The metal strip to be treated, which is parallel to the common axial plane of the tubes of the jet tube unit with a transversely extending to the tube axes Vorvor thrust is promoted, is heated by the radiated from the pipes of the jet pipe unit heat radiation. Because of the high temperatures of the jet pipes, the bearing of the jet pipe unit is to be designed so that at least the thermal expansions of the pipes in the axial direction are taken into account. For this purpose, the central tube between the burner and the outer tubes is held axially in a pivot bearing, while at the opposite end of the jet tube unit, a usually hollow bearing pin, which is welded to the two connecting the ends of the central tube to the ends of the outer tubes pipe bends, axially displaceable in supported by a support. Due to the high treatment temperatures of, for example, 750 ° C to 900 ° C, the strength also suffers from heat-resistant steels, which brings the risk of jamming of the journal in the support with it. By preventing the axial journal movement in the bearing, deformations of the jet tubes and, as a consequence, damage that can cause the device to come to a standstill occur.
Darstellung der Erfindung Presentation of the invention
Der Erfindung liegt somit die Aufgabe zugrunde, eine Vorrichtung der eingangs geschilderten Art zur Wärmebehandlung von Blechbändern so auszugestalten, dass eine Beschädigung der Strahlrohreinheit aufgrund von Wärmedehnungen weitgehend ausgeschlossen werden kann. The invention is therefore based on the object, a device of the type described for the heat treatment of metal bands in such a way that damage to the jet pipe unit due to thermal expansion can be largely excluded.
Die Erfindung löst die gestellte Aufgabe dadurch, dass zwischen der Zapfenaufnahme des Auflagers und dem Lagerzapfen ein eine Gleitschicht bildender Einsatz im Auflagebereich des Lagerzapfens vorgesehen ist. The invention solves the problem set by the fact that between the pin receiving the support and the bearing pin a sliding layer forming insert is provided in the support region of the journal.
Durch das Vorsehen eines Einsatzes mit einer Gleitschicht zwischen dem Lagerzapfen und der Zapfenaufnahme des Auflagers kann in einfacher Weise einem Festbacken des Lagerzapfens in der Zapfenaufnahme vorgebeugt werden, sodass auch bei hohen Temperaturen die gleitfähige Aufnahme des Lagerzapfens im Auflager gewährleistet werden kann. Voraussetzung ist eine Gleitschicht, die eine ausreichende Temperaturbeständigkeit aufweist, wie dies beispielsweise für Gleitschichten aus einem keramischen Werkstoff vorteilhaft gegeben ist. Durch das vorsehen eines die Gleitschicht bildenden Einsatzes im Auflagebereich des Lagerzapfens zwischen der Zapfenaufnahme und dem Zapfen ergeben sich einfache Konstruktionsverhältnisse, weil der Einsatz, vorzugsweise ein entsprechend geformter Blechteil, als gesonderter Bauteil einfach mit einer Gleitschicht beschichtet werden kann. Außerdem ist die Gleitschicht aufgrund der vergleichsweise hohen Gewichtsbelastung durch die Strahlrohreinheit einem nicht unerheblichen Verschleiß ausgesetzt, sodass ein auswechselbarer Einsatz, der die Gleitschicht bildet, besondere Vorteile mit sich bringt, wenn es gilt, die Gleitschicht zu erneuern. Es braucht ja lediglich der Einsatz ausgebaut und neu beschichtet bzw. durch einen neuen Einsatz ersetzt zu werden. By providing an insert with a sliding layer between the bearing pin and the pin receptacle of the support can be prevented in a simple manner a caking of the journal in the pin receiving, so that even at high temperatures, the slidable recording of the journal can be guaranteed in the support. Prerequisite is one Sliding layer, which has a sufficient temperature resistance, as is advantageous, for example, for sliding layers of a ceramic material. By providing an overlay forming insert in the support area of the journal between the pin receiving and the pin, simple construction conditions arise because the insert, preferably a correspondingly shaped sheet metal part can be easily coated as a separate component with a sliding layer. In addition, the sliding layer is exposed to a considerable wear due to the relatively high weight load through the nozzle unit, so that a replaceable insert forming the overlay, brings special benefits when it comes to renew the overlay. It only needs to be removed and re-coated or replaced with a new insert.
Kurze Beschreibung der Zeichnung Short description of the drawing
In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen In the drawing, the subject invention is shown, for example. Show it
Fig. 1 eine erfindungsgemäße Vorrichtung zur Wärmebehandlung von Blechbändern ausschnittsweise im Bereich der Strahlrohreinheit in einer vereinfachten Seitenansicht,  1 shows a device according to the invention for the heat treatment of sheet metal strips in sections in the area of the jet pipe unit in a simplified side view,
Fig. 2 die Strahlrohreinheit ausschnittsweise im Bereich des Lagerzapfens in einem vereinfachten Schnitt durch das Auflager für den Lagerzapfen in einem größeren Maßstab und  Fig. 2, the jet pipe unit fragmentary in the region of the journal in a simplified section through the support for the journal on a larger scale and
Fig. 3 einen Schnitt nach der Linie III-III der Fig. 2. Weg zur Ausführung der Erfindung  Fig. 3 is a section along the line III-III of Fig. 2. Way to carry out the invention
Die dargestellte Vorrichtung zur Wärmebehandlung von Blechbändern weist gemäß der Fig. 1 wenigstens eine Strahlrohreinheit 1 auf, die ein Mittelrohr 2 und zwei mit dem Mittelrohr 2 in einer gemeinsamen Axialebene liegende, parallele Außenrohre 3 umfasst. Die Außenrohre 3 sind mit dem Mittelrohr 2 jeweils über endseitige Rohrbögen 4 strömungsverbunden. Die von einem an eine Verlängerung 5 des Mittelrohrs 2 angeschlossenen Brenner in das Mittelrohr 2 strömenden heißen Abgase werden somit über die beiden Außenrohre 3 teilweise im Kreislauf geführt. Mit Hilfe der von den Rohren 2, 3 abgestrahlten Strahlungswärme wird ein strichpunktiert angedeutetes Blechband 6 erwärmt, das parallel zur gemeinsamen Axialebene der Rohre 2, 3 geführt wird, und zwar in einer Vorschubrichtung 7, die quer zu den Rohrachsen verläuft. 1, at least one jet pipe unit 1, which comprises a center pipe 2 and two parallel outer pipes 3 lying in a common axial plane with the center pipe 2. The outer tubes 3 are connected to the central tube. 2 each fluidly connected via end pipe bends 4. The hot exhaust gases flowing into the central pipe 2 from a burner connected to an extension 5 of the center pipe 2 are thus partially recirculated via the two outer pipes 3. With the help of radiated from the tubes 2, 3 radiant heat a dash-dotted lines indicated sheet metal strip 6 is heated, which is guided parallel to the common axial plane of the tubes 2, 3, in a feed direction 7, which is transverse to the tube axes.
Die Strahlrohreinheit 1 wird beidseits der Rohre 2 und 3 gelagert, sodass sich eine weitgehend gleichmäßige Aufteilung der Gewichtsbelastung auf die beiden seitlichen Auflager ergibt. Während das die Verlängerung 5 des Mittelrohrs 2 aufnehmende, aus Übersichtlichkeitsgründen nicht dargestellte Auflager die Strahlrohreinheit 1 axial festlegt, stützt das gegenüberliegende Auflager 8 die Strahlrohreinheit 1 axial verschiebbar ab. Zu diesem Zweck trägt die Strahlrohreinheit 1 an dem der Verlängerung 5 gegenüberliegenden Ende des Mittelrohrs 2 einen üblicherweise rohrförmigen Lagerzapfen 9, der axial verschiebbar in einer hülsenförmigen Zapfenaufnahme 10 abgestützt ist. Wie insbesondere der Fig. 2 zu entnehmen ist, ist diese hülsenförmige Zapfenaufnahme 10 an einer Tragplatte 11 angeordnet, die an eine Wand 12 eines die Strahlrohreinheit 1 aufnehmenden Ofengestells befestigt ist und durch die Wärmedämmung 13 der Ofenwand 12 in den Ofenraum ragt. Durch einen wärmedämmenden Stopfen 14 innerhalb der Zapfenaufnahme 10 ist auch das Auflager 8 mit einer entsprechenden Wärmedämmung versehen. The jet pipe unit 1 is mounted on both sides of the tubes 2 and 3, so that there is a largely uniform distribution of the weight load on the two lateral supports. While the extension 5 of the central tube 2 receiving, not shown for reasons of clarity support the jet pipe unit 1 sets axially, the opposite support 8 supports the nozzle unit 1 axially slidably. For this purpose, the jet pipe unit 1 carries at the opposite end of the extension 5 of the central tube 2 a usually tubular bearing pin 9 which is axially displaceably supported in a sleeve-shaped pin receptacle 10. 2, this sleeve-shaped pin receptacle 10 is arranged on a support plate 11, which is attached to a wall 12 of the nozzle unit receiving the nozzle unit 1 and projects through the thermal insulation 13 of the furnace wall 12 into the furnace chamber. By a heat-insulating plug 14 within the pin receptacle 10 and the support 8 is provided with a corresponding thermal insulation.
Damit der Lagerzapfen 9 selbst bei hohen Temperaturbelastungen gleitfähig in der Zapfenaufnahme 10 abgestützt werden kann, ist gemäß den Fig. 2 und 3 die hülsenförmige Zapfenaufnahme 10 mit einem eine Gleitschicht 15 bildenden Einsatz 16 versehen, auf dem der Zapfen 9 aufruht, sodass die Gleitfähigkeit des Lagerzapfens 9 gegenüber dem Auflager 8 durch eine entsprechende Gleitschicht 15 sichergestellt wird. Dieser Einsatz 16 wird mit Hilfe gesicherter Steckzapfen 17 in der hülsenförmigen Zapfenaufnahme 10 gehalten und kann daher in einfacher Weise gewechselt werden, falls der Verschleiß der durch diesen Einsatz 16 gebildeten Gleitschicht 15 einen solchen Wechsel erforderlich macht. Thus, the bearing pin 9 can be supported slidably in the pin receptacle 10 even at high temperature loads, the sleeve-shaped pin receptacle 10 is provided with a sliding layer 15 forming insert 16, as shown in FIGS. 2 and 3, on which the pin 9 rests, so that the sliding of the Bearing 9 is secured against the support 8 by a corresponding sliding layer 15. This insert 16 is held by means of secured plug-in pin 17 in the sleeve-shaped pin receptacle 10 and can therefore be changed in a simple manner, if the wear of makes this insert 16 formed sliding layer 15 makes such a change required.
Die Gleitschicht 15 des Einsatzes 16 muss entsprechend temperaturfest ausgebildet sein. Eine Gleitschicht 15 aus einem keramischen Werkstoff erfüllt diese Bedingungen in vorteilhafter Weise. Die für den Ausgleich der Wärmedehnungen der Rohre 2, 3 der Strahlrohreinheit 1 erforderliche axiale Relativbewegung zwischen dem Lagerzapfen 9 und dem Auflager 8 ist damit auch bei den auftretenden hohen Belastungen durch das Gewicht der Strahlrohreinheit 1 und die Temperaturverhältnisse gewährleistet. The sliding layer 15 of the insert 16 must be designed to be temperature resistant. A sliding layer 15 made of a ceramic material satisfies these conditions in an advantageous manner. The required for the compensation of the thermal expansion of the tubes 2, 3 of the jet pipe unit 1 axial relative movement between the bearing pin 9 and the support 8 is thus ensured even at the high loads occurring by the weight of the nozzle unit 1 and the temperature conditions.

Claims

P a t e n t a n s p r ü c h e : Patent claim:
1. Vorrichtung zur Wärmebehandlung von Blechbändern (6) mit wenigstens einer Strahlrohreinheit (1), die drei in einer gemeinsamen, zum Blechband (6) parallelen Ebene liegende Rohre, nämlich ein an einen Brenner anschließbares Mittelrohr (2) und zwei an beiden Enden mit dem Mittelrohr (2) über Rohrbögen (4) verbundene Außenrohre (3), aufweist, und mit einem Auflager (8) auf der dem Brenner gegenüberliegenden Seite der Strahlrohreinheit (1) für einen mit den beiden Rohrbögen (4) zwischen dem Mittelrohr (2) einerseits und den beiden Außenrohren (3) anderseits verbundenen Lagerzapfen (9), der axial verschiebbar in eine Zapfenaufnahme (10) des Auflagers (8) eingreift, dadurch gekennzeichnet, dass zwischen der Zapfenaufnahme (10) des Auflagers (8) und dem Lagerzapfen (9) ein eine Gleitschicht (15) bildender Einsatz (16) im Auflagebereich des Lagerzapfens (9) vorgesehen ist. 1. A device for heat treatment of metal strips (6) with at least one jet pipe unit (1), the three in a common, the sheet metal strip (6) parallel plane lying tubes, namely a connectable to a burner central tube (2) and two at both ends with the outer tube (3), connected to the central tube (2) via pipe bends (4), and with a support (8) on the opposite side of the burner tube unit (1) for one with the two pipe bends (4) between the central tube (2 ) On the one hand and the two outer tubes (3) on the other hand connected bearing pin (9) which engages axially displaceable in a pin receptacle (10) of the support (8), characterized in that between the pin receiving means (10) of the support (8) and the bearing pin (9) an insert (16) forming a sliding layer (15) is provided in the support area of the bearing journal (9).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der die Gleitschicht (15) bildende Einsatz (16) auswechselbar in der Zapfenaufnahme (10) des Auflagers (8) gehalten ist. 2. Apparatus according to claim 1, characterized in that the sliding layer (15) forming insert (16) is replaceably held in the pin receptacle (10) of the support (8).
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gleitschicht (15) aus einem keramischen Werkstoff hergestellt ist. 3. Device according to claim 1 or 2, characterized in that the sliding layer (15) is made of a ceramic material.
EP10770943.8A 2009-10-13 2010-09-17 Device for heat-treating sheet metal strips Active EP2488811B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0160909A AT508368B1 (en) 2009-10-13 2009-10-13 DEVICE FOR HEAT TREATMENT OF TAPE BANDS
PCT/AT2010/000340 WO2011044599A1 (en) 2009-10-13 2010-09-17 Device for heat-treating sheet metal strips

Publications (2)

Publication Number Publication Date
EP2488811A1 true EP2488811A1 (en) 2012-08-22
EP2488811B1 EP2488811B1 (en) 2017-06-14

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US (1) US8877120B2 (en)
EP (1) EP2488811B1 (en)
JP (1) JP2013507525A (en)
KR (1) KR20120099400A (en)
CN (1) CN102713484B (en)
AT (1) AT508368B1 (en)
BR (1) BR112012008659A2 (en)
CA (1) CA2774828A1 (en)
MX (1) MX2012003807A (en)
RU (1) RU2012119517A (en)
TW (1) TW201120391A (en)
WO (1) WO2011044599A1 (en)
ZA (1) ZA201202062B (en)

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TW201120391A (en) 2011-06-16
AT508368A4 (en) 2011-01-15
CN102713484B (en) 2015-12-16
CN102713484A (en) 2012-10-03
ZA201202062B (en) 2013-05-29
JP2013507525A (en) 2013-03-04
BR112012008659A2 (en) 2017-06-13
KR20120099400A (en) 2012-09-10
US20120200015A1 (en) 2012-08-09
EP2488811B1 (en) 2017-06-14
RU2012119517A (en) 2013-11-20
WO2011044599A1 (en) 2011-04-21
US8877120B2 (en) 2014-11-04
MX2012003807A (en) 2012-05-08
CA2774828A1 (en) 2011-04-21
AT508368B1 (en) 2011-01-15

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