EP2737092B1 - Dispositif de changement de rouleau pour fours - Google Patents

Dispositif de changement de rouleau pour fours Download PDF

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Publication number
EP2737092B1
EP2737092B1 EP12738469.1A EP12738469A EP2737092B1 EP 2737092 B1 EP2737092 B1 EP 2737092B1 EP 12738469 A EP12738469 A EP 12738469A EP 2737092 B1 EP2737092 B1 EP 2737092B1
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EP
European Patent Office
Prior art keywords
roller
furnace
housing
exchanged
handling device
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.)
Active
Application number
EP12738469.1A
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German (de)
English (en)
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EP2737092A1 (fr
Inventor
Robert Ebner
Andreas Sauschlager
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
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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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0012—Rolls; 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
    • 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
    • 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
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49545—Repairing or servicing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53104—Roller or ball bearing

Definitions

  • the invention relates to a roll changing device and a method for changing a roll of a furnace for heat treating components and relates to an arrangement of a roll changing device and a furnace.
  • a roller hearth furnace is used for heating and / or temperature compensation of continuous casting or other components, which in particular consist of steel or steel materials or of other materials such as copper or aluminum and are transported through rollers on the furnace chamber.
  • Such roller hearth furnaces are very long and are filled inside with gas of a very high temperature.
  • an order of magnitude of one hundred to two hundred rolls may be arranged along a furnace, for example one hundred meters long, which may, for example, be brought to a temperature of 1000 ° C.
  • a hydrogen protective gas atmosphere (or a hydrogen-nitrogen mixture) may be formed.
  • KR-20100 117 353 discloses a device for changing the roles of a continuous roller hearth furnace.
  • a roll changing apparatus for changing a roll from a plurality of rolls of a furnace for heat-treating components.
  • the roll changing device has a lockable (that is, sealable to the outside) housing in which a first inert gas atmosphere can be formed.
  • the roll changing device further has a roll handling device, which is at least partially disposed in the housing (but can also be moved out of the housing and, for example, can be retracted into the oven).
  • the roll handling device is adapted for disassembling the roll to be replaced from the furnace and for mounting a replacement roll to the furnace while maintaining a high temperature and a second inert gas atmosphere in the furnace during the roll change.
  • an arrangement which comprises a Roll change device having the features described above and the furnace for heat treating components.
  • a method for changing a roll from a plurality of rolls of a furnace for heat treating components is provided.
  • a first inert gas atmosphere is formed in a lockable housing of a roll changing apparatus, the roll to be replaced is dismantled from the furnace with a roll handling device of the roll changing device at least partially disposed in the housing, and a replacement roll is mounted on the furnace with the roll handling device.
  • a high temperature and a second inert gas atmosphere are maintained in the furnace.
  • a protective gas atmosphere in the furnace chamber is to be understood as meaning a gas atmosphere which is suitable for heat-treating the components as annealing goods at a corresponding high temperature.
  • a corresponding protective gas should have good thermal conductivity, for example hydrogen or helium, in order to heat the annealed material efficiently.
  • the high temperature that is maintained during a roll change may be in a range between 500 ° C and 1200 ° C, i. in the range of an operating temperature of the furnace, lie.
  • a roll-changing device which has a gas-tightly sealable housing with an inert gas filling which can be selected harmlessly or harmlessly for a furnace, for example nitrogen.
  • the roll changing device can be connected to the oven at a position of the role to be replaced. It can be done through an opening in the housing through a replacement of the roll.
  • This procedure makes it possible to maintain the protective gas atmosphere in the furnace as well as the temperature in the furnace, since during the entire change operation the furnace interior is only in fluid communication with the protective gas atmosphere of the lockable housing and is gas-tightly decoupled from a environment with harmful oxygen-containing atmosphere. Contacting the open interior with oxygen, which could lead to a fire hazard, is thus avoided according to the invention.
  • it is possible to perform the replacement of roles with a greatly reduced time of, for example, one hour. This can be done by a mechanism that allows removal of a defective roll and installation of a new roll while maintaining the protective gas and the temperature inside the furnace.
  • the roll changing device may include a traveling stage configured to move the roll handling device together with the housing relative to the furnace to position the roll handling device relative to the roll to be replaced.
  • a traveling stage configured to move the roll handling device together with the housing relative to the furnace to position the roll handling device relative to the roll to be replaced.
  • Such a movable stage allows the roller handling device to be moved to and positioned relative to any one of the plurality of rollers of the oven.
  • the roller handling device can be at least partially extendable out of the housing through a lock in a wall of the housing in order to handle the roller to be replaced.
  • a sealable and selectively openable lock in the housing wall makes it possible to perform assembly and disassembly procedures on individual rollers of the oven from within the housing.
  • the lock on the wall of the housing on a housing outside neck nozzle which is formed attachable to the furnace, thereby a dense, in particular a gas-tight environment, connection between an interior of the housing and an interior of the furnace can be formed
  • the neck nozzle can include a furnace outside cover of the role to be replaced or record in its interior when this cover is removed before disassembly of the actual reel body.
  • the attachment piece can be flange-mounted on the furnace, in particular screwed thereto.
  • This attachment piece can advantageously be gas-tightly attached to a corresponding counterpart on the furnace (for example, a corresponding counter flange in the region of the roll to be replaced), in order then to be able to process this roll specifically, without the risk of loss of the protective gas atmosphere inside the furnace or the ingress of oxygen.
  • the roller handling device can be translationally movable along one, two or three dimensions or spatial directions. Alternatively or additionally, the roller handling device can be tilted about one or more axes.
  • the roll handling device may, for example, comprise a lance that can be arbitrarily aligned relative to a roll in terms of both translational and rotational degrees of freedom. This allows a precise mechanical coupling to the role to be replaced.
  • the roll handling device may be configured to apply a contact pressure sealing the oven to the lid while at least one fastener (eg screws) is manually or machine controlled away from a lid of the roll to be replaced for separating the lid from the oven.
  • at least one fastener eg screws
  • the contact pressure of the roller handling device which acts on the lid, despite the absence of fasteners in the lid, a gas-tight connection inside the furnace can be maintained, preventing the penetration of unwanted gases into the furnace chamber is of paramount importance.
  • the roller handling device may be arranged to remove a lid of the roller to be replaced from the oven, in particular by means of a driver take off. Furthermore, the roller handling device can be set up, the removed one Carry cover into the interior of the housing and store it there.
  • the roll handling device may be arranged to remove the lid of the roll to be replaced from the oven and to convey it through the attachment piece attached to the oven into the housing.
  • the contact pressure of the roller handling device can initially be maintained and the attachment piece can be gas-tightly flanged to the furnace at the corresponding point. As a result, gas tightness between the oven and housing is ensured throughout. Now the lid can be removed, transported into the housing interior and stored there, for example, in a shelf. All this can be machine or robot controlled.
  • the roll handling device may be arranged to move into the roll to be replaced in the furnace and to first lift the roll to be replaced in the furnace against a floating bearing (provided for geometrically compensating thermal expansion effects).
  • a floating bearing provided for geometrically compensating thermal expansion effects.
  • the lance of the roller handling device can retract into an inner cavity of the tubular roller, while the roller is still connected to the latter for example at three contact points of the movable bearing.
  • a release of the movable bearing is first required by the role, which can be done by lifting the role relative to the floating bearing.
  • the roller handling device can be set up to move the movable bearing into the interior of the housing after storage in the roller to be exchanged and to store it there, in particular by means of a driver.
  • a driver may for example be attached to a lance of the roller handling device and may be Promote the floating bearing in the interior of the housing effect.
  • the docking connection of the housing preferably remains gas-tightly connected to a counterflange of the furnace, so that the removal of the floating bearing does not affect the protective gas atmosphere in the interior of the furnace.
  • the roll changing device may comprise a component supporting device, in particular at least partially disposed inside the housing, for supporting the components (for example a heat-treated strip) in the furnace at least during a part of the change of the roll.
  • the role change can be made according to the invention, while the component (for example, a band or other Glühgut) still remains in the interior of the furnace at a high temperature of for example 1000 ° C. If the role is to be replaced, on which the component rests, it should be done before replacing the role first, a support of the component. This task is fulfilled by the component support device, which can be moved from the interior of the housing into the furnace, preferably through the docking connection of the housing, and in the meantime assumes the function of the roller to be replaced with regard to the support function.
  • the component support device may be designed to be translationally movable and / or pivotable.
  • the component support device can be selectively brought into an active (the component supporting) or in a passive (non-supporting the component) state, so that component support device and roller handling device do not interfere with each other.
  • the component support means may comprise a tube segment which is retractable into the oven and is pivotable about the roller to be replaced so as to support the components.
  • a diameter of the pipe from which the pipe segment is formed is, should this be greater than a diameter of the roller, so that the pipe segment can swing the role.
  • the component support device should already take over the support function of the roller, while the roller to be removed is still arranged in the interior of the furnace.
  • the component support means may be mounted concentrically or partially concentrically around the roll to be replaced, and may only be swung around inside the furnace so as to support the component from below. This allows a particularly space-saving configuration.
  • the pipe segment may comprise one-sixth or one-fourth of the pipe, ie, represent a 60 ° or 90 ° piece of a full-circumference pipe.
  • the roller handling device may be arranged, after releasing the role to be replaced at a floating bearing and a fixed bearing of the furnace and after retracting into the role to be replaced finally proposen the role to be replaced out of the oven and hineinzube statisticsn into the interior of the housing and store there.
  • Each roll may be mounted on the furnace on one side by means of a fixed bearing and on another side by means of a floating bearing.
  • the bearing holds the pin in its position, the movable bearing allows thermal expansion in the longitudinal direction.
  • a loose bearing is / can be attached to one side and a fixed bearing to the other side, so that thermal expansions can be compensated.
  • the second camp Before removing the role to be replaced from the oven is thus still the second camp, usually a fixed bearing, for example, to solve by hand. It is important to ensure that after releasing the floating bearing of the role of this part of the furnace gas-tight remains, for which purpose, for example, a sealing screw or the like can be used.
  • the roller handling device may be configured to mount a replacement roller mounted in the interior of the housing in the oven after the roller to be replaced is transported inside the housing.
  • This procedure is substantially inverse to the previously described disassembly procedure of the roll to be replaced.
  • the role to be attached to the fixed bearing Then, the attachment of the roller to the movable bearing, before the lid can be placed on the replaced roller from the outside.
  • rollers For example, it is possible to store two to eight spare rolls in the housing. Also, in corresponding shelves or the like space for receiving a corresponding number of defective roles. Also, bearing components or covers of the rollers can be stored in the interior of the housing in order to be able to maintain the protective gas atmosphere even for the replacement of a plurality of rollers.
  • the first inert gas atmosphere and the second inert gas atmosphere may both be substantially free of oxygen.
  • the first inert gas atmosphere may be an inert gas atmosphere, in particular a nitrogen atmosphere
  • the second inert gas atmosphere may be a fuel gas atmosphere, in particular a hydrogen atmosphere.
  • a heater for heating the furnace may be, for example, an electric heating unit or a gas heating unit for directly heating the inside of the oven, in particular the protective gas contained therein. It is also a heating unit using electromagnetic radiation as the heating medium possible. During replacement of a roll, a corresponding heating unit may be selectively shut down or left on.
  • a high temperature in the furnace may be maintained which is in a range between about 500 ° C and about 1200 ° C.
  • an interior of the furnace can remain closed to an environment, in particular remain only in fluid communication with an interior of the roll-changing device, furthermore in particular remain free of oxygen.
  • the oven remains gas tight to the laboratory environment and is only in gas communication with the roll changing device.
  • these can be equipped with a freely selectable inert gas atmosphere, this can be chosen so that there is no negative effect for the oven.
  • a drive unit before removing the roll from the furnace on a fixed bearing side of the furnace, a drive unit can be removed and the roll to be replaced can be pressed off by means of a gas-tight screw.
  • Such Drive unit can be arranged on the outside of the oven and be provided separately for each role. But it is also possible to provide a drive unit for a part of the rollers together or even for all roles together.
  • FIG. 12 shows a plan view of an assembly according to an exemplary embodiment of the invention formed from a roll change device 1 and from a furnace 10 for heat treating strips 50 of metal.
  • the furnace 10 is a roller hearth furnace in which, in a continuous process (see arrows in FIG Fig. 1 ), a band 50 made of metal or other components to be subjected to a heat treatment are passed through the hermetically sealed oven 10 to the outside and thereby heated.
  • the tape 50 may be unwound from a reel (not shown) prior to insertion into the oven 10 and rewound after leaving the oven 10 onto another reel (not shown).
  • the furnace 10 has along its longitudinal axis a plurality of rollers 6 for transporting the metal strip 50.
  • a length of the furnace 10 from the left to the right end may be, for example, 20 m, 50 m or 100 m.
  • the heating unit 60 is the Oven inside heats.
  • the heating unit 60 may be, for example, an electric heating unit or a gas heating unit.
  • Inside the furnace 10 there is a hydrogen protective gas atmosphere. Hydrogen as a good heat conductive gas can efficiently transfer heat from the heating unit 60 to the belt 50.
  • the hydrogen can be introduced by means of a protective gas atmosphere control unit 40 via a valve 42 into the interior of the furnace 10.
  • the inert gas atmosphere control unit 40 may purge the hydrogen from inside the furnace 10, if necessary, and replace it with, for example, another purge gas.
  • Each of the rollers 6 of the furnace 10 is rotatably supported at one end by a fixed bearing 19 and at the other end by a movable bearing 15 on a respective wall of the furnace 10.
  • a cover 7 closes on the side of the movable bearing 15, the respective roller 6 gas-tight.
  • the fixed bearing 19 is gas-tight, so that in the operation of the furnace 10 from the inside no hydrogen escape from the furnace 10 and from the ambient atmosphere, no oxygen can penetrate into the furnace 10.
  • each of the rollers 6 has a separate drive unit 17 which drives the respective roller 6 to rotate thereby to convey the belt 50.
  • several or all rollers 6 can be driven by means of a common drive unit (not shown).
  • the oven 10 is now operated together with the roll changing device 1, which serves to replace individual rolls 6 of the oven 10, for example, if they are defective or in need of maintenance.
  • the roll changing device 1 serves to replace individual rolls 6 of the oven 10, for example, if they are defective or in need of maintenance.
  • such a change can be carried out without the temperature inside the furnace 10 having to be substantially reduced or the protective gas atmosphere having to be flushed out of hydrogen inside the furnace 10 and replaced by another protective gas. This represents a significant Save time over conventional systems where this is required.
  • the roll changing device 1 has a lockable housing 2, in which a protective gas atmosphere of, for example, nitrogen can be formed.
  • the housing 2 is hermetically lockable, but can still be controlled from the environment.
  • Fig. 1 shows that the housing 2 has a protective gas control interface 52 for supplying and removing inert gas.
  • the housing 2 has an electrical interface 54 for supplying and removing electrical signals (for example for control or monitoring purposes) or for supplying the roll changing device 1 with electrical energy.
  • the interfaces 52, 54 are configured so that a gas-tight insulation between the interior of the housing 2 and the environment prevails, ie that the nitrogen protective gas atmosphere is maintained inside the housing 2.
  • a roller handling device 4 in the interior of the housing 2 is translationally movable and arranged tiltable, as with arrows in Fig. 1 indicated. Referring to FIGS. 2 to 25 is described in more detail, can be disassembled by means of such a roller handling device 4, a certain of the rollers 6 of the oven 10 and housed inside the housing 2. Further, the roller handling device 4 is capable of mounting a replacement roller 6 mounted inside the housing 2 while maintaining the high temperature in the furnace 10 continuously and maintaining the oxygen-free inert gas atmosphere in the furnace 10 throughout. However, during the roll change, certain amounts of the non-hazardous nitrogen for the operation of the furnace 10 from the interior of the housing 2 can get into the interior of the furnace 10. What against it throughout Reel change is reliably avoided, is the external penetration of oxygen into the oven interior, since the entire change process of the roll 6 to be replaced takes place to form a gas-tight connection between the furnace 10 and housing 2.
  • FIGS. 2 to 25 show two spatial views of the arrangement.
  • the roll changing device 1 is positioned with a platform 8 along a furnace longitudinal axis 9 at the corresponding alternating position and moved up to the furnace 10 ( Fig. 2 to Fig. 4 ).
  • the various connections to the furnace 10 are completed.
  • the lance 4 moves out of the housing 2 and presses the closure lid 7 of the roller 6, in order to maintain tightness, then the cover screws can be solved ( Fig. 5 ).
  • the nozzle 3 moves fully to a furnace flange 12 and over the lid 7 over.
  • the Deckelanpressung remains upright by way and pneumatic force balance.
  • the flange connection is screwed ( Fig. 6 ).
  • the housing 2 is purged with nitrogen (N 2 ).
  • the lance 4 pulls over a driver, the lid 7 including an insulation plug 13 and puts it on from the shelf 5 ( Fig. 7 and Fig. 8 ). Subsequently, the lance 4 enters the hollow roller 6 inside ( Fig. 9 ) and pulls off via a pneumatic driver at the rearmost end of the floating bearing 15 ( Fig. 10 ). The roller 6 is now supported by the lance 4. In order to make room for a belt support shell 26, the lance 4 is extended to the extremely possible support position and then the belt support shell 26 is positioned ( Fig. 11 ), and then pivoted into the oven 10 to support the strip in the oven 10 ( Fig. 12 ). An expanding device in the lance 4 fixes the roller 6 on the lance 4.
  • the furnace outer-side roller drive 17 is decoupled on the opposite side of the furnace ( Fig. 13 ) and the gas-tight fixing screw 30 of the fixed bearing 19 ( Fig. 14 and Fig. 25 ).
  • the roller 6 is extended out of the oven 10 and placed on the shelf 5 ( FIGS. 15 to 17 ).
  • a new roll 6 is received, is inserted into the furnace 10 and fixed to the fixed bearing 19 ( Fig. 18 ).
  • the lance 4 moves back to the outermost support position to get space to extend the tape support tray 26 ( Fig. 19 . Fig. 20 ).
  • the lance 4 moves completely into the oven 10 to position the movable bearing 15 ( Fig. 21 ).
  • the lid 7 can be retrieved from its storage position ( Fig.
  • the lock on the wall of the housing 2 on the housing outer side neck 3, which - a furnace outer side cover 7 of the role to be replaced 6 enclosing or receiving - can be sealingly attached to the furnace 10.
  • the latter is in Fig. 6 shown where the neck nozzle 3 is screwed gas-tight to the corresponding flange 12 of the furnace 10.
  • a flushing of the housing 2 can be carried out with nitrogen.
  • Fig. 7 now shows the mandrel of the lance 4, as this is pressed against the cover 7 of the roller 6.
  • the spine can be water cooled.
  • the actual roller 6 is as a hollow cylindrical component 80 between an insulation plug 13 and an outer wall 82 in Fig. 7 shown.
  • Fig. 8 shows the arrangement in a state in which the lid 7 together with the insulating plug 13 has been gas-tightly transferred from the interior of the oven 10 through an inner lumen of the docking nozzle 3 into the interior of the housing 2 and in a rack 5 (for example, robotically controlled) has been stored.
  • a driver of the lance 4 has deducted this cover 7 from the oven 10 and transferred into the interior of the housing 2.
  • a pneumatic spreader 90 in the form of annular circumferential slots on the mandrel 4 in Fig. 8 can be seen and at a later time from the inside the roller 6 attacks to pull them out of the oven 10.
  • the annular circumferential slots Versp Sandersungstechnik can then be extended.
  • Fig. 9 It is shown how by light tilting the lance 4 is operated to raise the roller 6. As a result, a relief of the roller 6 take place on the floating bearing 15 on which the roller 6 previously rests. This prepares the subsequent removal of the outer plug.
  • a drive unit 17 of the roller 6 which is positioned outside the furnace 10 and acts on the side of the fixed bearing 19.
  • a conical end portion 74 of the roller 6 is embedded in a corresponding counterpart of the fixed bearing 19.
  • Fig. 10 shows how the outer wall 82 of the roller 6 together with movable bearing 15 is removed after the shaft 6 has been lifted by lifting the shaft 6 by means of the lance 4 and thus has been relieved from the movable bearing 15.
  • Fig. 11 now shows how the shell 26, clearly a bent sheet with water cooling (for example, a quarter or a sixth segment of a tube) is handled.
  • a trolley 84 which can run along a guide 86 and by means of a pivoting element 16, the tape support tray 26 can be translated and rotated.
  • the band support shell 26 engages around the mandrel of the lance 4 on the outside.
  • Fig. 12 shows how the rotation means 16 is pivoted when the belt support 26 has been inserted into the interior of the furnace 10.
  • the shell 26 is pivoted upward from an underside of the shaft 6 (not shown in FIG Fig. 12 ).
  • This can be a likewise in Fig. 12 not shown tape as a component to be thermally treated on the underside of the as Tube piece trained band support tray 26 are supported. This then allows a subsequent roll removal, without the tape would have to be removed from the oven 10.
  • Fig. 13 shows a drive shaft 17 for driving the corresponding roller 6. Also is in Fig. 13 to see an outer wall of the furnace 10 with fixed bearing 19 attached thereto. To remove the drive shaft 17, screws can be unscrewed, as indicated by reference numeral 66, manually or machine-controlled.
  • Fig. 14 shows an enlarged view of the roller 6 in the region of the fixed bearing 19.
  • the roller 6 can be abdrückbar by means of a gas-tight screw 30. Furthermore, a lateral locking element 18 is shown.
  • Fig. 15 shows how the roller 6, which is now free on the fixed bearing side, is recorded.
  • the role 6 is with the in Fig. 8 shown spreader 90 attached to the lance 4, and the roller 6 is then retracted from the oven 10 into the housing 2 and stored in the shelf 5.
  • Fig. 16 and Fig. 17 show how the roller 6 in the housing 2.
  • Fig. 18 begins the installation of a new roller 6 in the oven 10. It is initially the fixed bearing 19 to be mounted on the new roll 6, before the tape support 26 according to Fig. 19 and Fig. 20 is handled.
  • Fig. 21 then shows how the floating bearing 15 is installed. Then according to Fig. 22 the lid 7 is picked up according to Fig. 23 the lid 7 is positioned and pressed, the housing 2 is released from the oven 10 and the cover 7 is screwed ( Fig. 24 ) .
  • FIG. 25 the fixed bearing 19 again shown in detail.
  • two O-rings 77 are provided, which improve the seal.
  • a locking ring 78 is provided which allows the expressions of the roller 6.
  • a conical seat is provided with reference numeral 79.
  • a spherical roller bearing 81 is also shown.
  • shaft seals 83 can be seen. Cooling fins 85 are also shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Claims (13)

  1. Dispositif de changement de rouleau (1) servant à changer un rouleau (6) parmi une pluralité de rouleaux (6) d'un four (10) servant au traitement thermique de composants (50), caractérisé en ce que le dispositif de changement de rouleau (1) présente :
    un boîtier (2) pouvant être fermé, dans lequel une première atmosphère protectrice peut être réalisée ;
    un système de manutention de rouleau (4), qui est disposé au moins en partie dans le boîtier (2) et qui est mis au point afin de démonter du four (10) le rouleau (6) à remplacer et afin de monter un rouleau de remplacement (6) au niveau du four (10) essentiellement en conservant une température élevée et une deuxième atmosphère protectrice dans le four (10) au cours du changement de rouleau,
    caractérisé en ce que le système de manutention de rouleau (4) peut être sorti du boîtier (2) au moins en partie en passant par un sas dans la paroi du boîtier (2) afin de manipuler le rouleau (6) à remplacer,
    caractérisé en ce que le sas dans la paroi du boîtier (2) présente un embout tubulaire (3) situé côté extérieur du boîtier, lequel est réalisé de manière à pouvoir être installé de telle manière au niveau du four (10) qu'une liaison étanche, en particulier une liaison étanche aux gaz par rapport à l'environnement, peut être réalisée entre un intérieur du boîtier (2) et un intérieur du four (10).
  2. Dispositif de changement de rouleau (1) selon la revendication 1, présentant une plate-forme (8), qui est mise au point afin de déplacer le système de manutention de rouleau (4), le boîtier (2) y compris, par rapport au four (10) afin de positionner le système de manutention de rouleau (4) par rapport au rouleau (6) à remplacer.
  3. Dispositif de changement de rouleau (1) selon la revendication 1 ou 2, caractérisé en ce que le système de manutention de rouleau (4) est réalisé de manière à pouvoir être déplacé par translation le long d'une, de deux ou de trois dimensions, et/ou est réalisé de manière à pouvoir être basculé.
  4. Dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le système de manutention de rouleau (4) est mis au point afin d'exercer, au cours d'un enlèvement manuel ou à réglage mécanique d'au moins un élément de fixation d'un couvercle (7) du rouleau (6) à remplacer, une force de compression, rendant le four (10) étanche, sur le couvercle (7) afin de séparer le couvercle (7) du four (10).
  5. Dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le système de manutention de rouleau (4) est mis au point afin de retirer du four (10) un couvercle (7) du rouleau (6) à remplacer, en particulier à le retirer au moins d'un entraîneur.
  6. Dispositif de changement de rouleau (1) selon la revendication 5, caractérisé en ce que le système de manutention de rouleau (4) est mis au point afin de retirer du four (10) le couvercle (7) du rouleau (6) à remplacer et afin de le transporter dans le boîtier (2) en passant par l'embout tubulaire (3) installé au niveau du four (10).
  7. Dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le système de manutention de rouleau (4) est mis au point afin de rentrer dans une cavité du rouleau (6) à remplacer dans le four (10) et afin de soulever le rouleau (6) à remplacer dans le four (10) par rapport à un palier lâche (15).
  8. Dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 7,
    présentant un système de support de composant (26), disposé en particulier au moins en partie à l'intérieur du boîtier (2) servant à supporter un des composants (50) dans le four (10) au moins au cours d'une partie du changement du rouleau (6).
  9. Dispositif de changement de rouleau (1) selon la revendication 8, caractérisé en ce que le système de support de composant (26) présente un segment de tuyau, qui peut être rentré dans le four (10) et qui peut être pivoté tout autour du rouleau (6) à remplacer afin de soutenir ainsi un des composants (50).
  10. Dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le système de manutention de rouleau (4) est mis au point afin de transporter en dehors du four (10) le rouleau (6) à remplacer, afin de le transporter à l'intérieur du boîtier (2) et de l'y entreposer après avoir détaché le rouleau (6) à remplacer d'un palier lâche (15) et d'un palier fixe (19) du four (10) et après être rentré dans une cavité du rouleau (6) à remplacer.
  11. Ensemble présentant :
    un dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 10 ;
    le four (10) servant au traitement thermique de composants (50).
  12. Procédé servant à changer un rouleau (6) d'une pluralité de rouleaux (6) d'un four (10) servant au traitement thermique de composants (50), caractérisé en ce que le procédé présente les étapes suivantes consistant à :
    réaliser une première atmosphère protectrice dans un boîtier (2) pouvant être fermé d'un dispositif de changement de rouleau (1) selon l'une quelconque des revendications 1 à 10 ;
    démonter du four (10) le rouleau (6) à remplacer avec un système de manutention de rouleau (4), disposé au moins en partie dans le boîtier (2), du dispositif de changement de rouleau (1),
    caractérisé en ce que le système de manutention de rouleau (4) peut être sorti du boîtier (2) au moins en partie en passant par un sas dans une paroi du boîtier (2) afin de manipuler le rouleau (6) à remplacer ;
    monter un rouleau de remplacement (6) au niveau du four (10) avec le système de manutention de rouleau (4) ;
    caractérisé en ce qu'au cours du démontage et du montage, une température élevée et une deuxième atmosphère protectrice restent essentiellement maintenues dans le four (10).
  13. Procédé selon la revendication 12, caractérisé en ce qu'au cours du changement du rouleau (6), une température élevée reste maintenue dans le four (10), laquelle se situe dans une plage comprise entre 500 °C et 1 200 °C, et/ou
    caractérisé en ce qu'avant l'enlèvement du rouleau (6) hors du four (10), une unité d'entraînement (17) est retirée d'un côté de palier fixe du four (10), et en ce que le rouleau (6) à remplacer est éjecté au moyen d'une vis étanche aux gaz.
EP12738469.1A 2011-07-25 2012-07-25 Dispositif de changement de rouleau pour fours Active EP2737092B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011079771.8A DE102011079771B4 (de) 2011-07-25 2011-07-25 Rollenwechselvorrichtung und Verfahren zum Wechseln einer Rolle für Öfen
PCT/EP2012/064620 WO2013014201A1 (fr) 2011-07-25 2012-07-25 Dispositif de changement de rouleau pour fours

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EP2737092A1 EP2737092A1 (fr) 2014-06-04
EP2737092B1 true EP2737092B1 (fr) 2016-10-12

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US (1) US20140165404A1 (fr)
EP (1) EP2737092B1 (fr)
JP (1) JP2014523972A (fr)
KR (1) KR20140039335A (fr)
CN (1) CN103764855A (fr)
BR (1) BR112014001632A2 (fr)
CA (1) CA2843033A1 (fr)
DE (1) DE102011079771B4 (fr)
RU (1) RU2014106618A (fr)
TW (1) TW201323813A (fr)
WO (1) WO2013014201A1 (fr)

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EP3048403B1 (fr) 2015-01-20 2017-11-29 LOI Thermprocess GmbH Dispositif de changement de rouleau porteur et procédé de changement de rouleau porteur
DE202015100232U1 (de) 2015-01-20 2015-02-05 Loi Thermprocess Gmbh Tragrollenwechselvorrichtung
EP3048405A1 (fr) 2015-01-20 2016-07-27 LOI Thermprocess GmbH Dispositif de changement de rouleau porteur
EP3048404B1 (fr) 2015-01-20 2018-04-11 LOI Thermprocess GmbH Dispositif de changement de rouleau porteur et procédé de changement de rouleau porteur
AT14633U1 (de) * 2015-01-20 2016-02-15 Loi Thermprocess Gmbh Tragrollenwechselvorrichtung
DE202015100250U1 (de) 2015-01-21 2015-02-27 Loi Thermprocess Gmbh Tragrollenwechselvorrichtung
DE202015100286U1 (de) 2015-01-22 2015-03-02 Loi Thermprocess Gmbh Tragrollenwechselvorrichtung
DE202015100501U1 (de) 2015-02-03 2015-02-25 Loi Thermprocess Gmbh Tragrollenwechselvorrichtung
CN104976890A (zh) * 2015-05-28 2015-10-14 海宁奇晟轴承有限公司 一种网带回火炉
US10830536B2 (en) 2018-03-15 2020-11-10 Ford Motor Company Roller transport assembly for transporting rollers to and from a roller hearth furnace
CN114396796B (zh) * 2022-01-14 2024-02-23 南京科达新控仪表有限公司 一种带氮气保护的推板炉双闸门进料装置及其使用方法
CN115305337A (zh) * 2022-08-27 2022-11-08 湖南湘钢工程技术有限公司 钢厂中厚板热处理炉热态更换炉辊工艺
CN115519519A (zh) * 2022-09-20 2022-12-27 北京机科国创轻量化科学研究院有限公司 一种专门用于炉辊拆装的折叠架

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DE3230115A1 (de) 1982-08-13 1984-02-16 Ruhrgas Ag, 4300 Essen Verfahren zum auswechseln der rollen eines durchlauf-rollenherdofens sowie ofen zum durchfuehren des verfahrens
DE3738317C1 (en) 1987-11-11 1988-12-22 Didier Eng Supporting-roller arrangement for reheating furnaces for steel strips produced in the CSP process
DE4041217A1 (de) 1989-12-23 1991-07-11 Reining Heisskuehlung Gmbh & C Durchlaufofen und verfahren zur wartung der rollen eines durchlaufofens
DE69809312T2 (de) 1997-02-27 2003-09-04 Stein Heurtey S.A., Ris Orangis Einrichtung zur Ersetzung einer Bandträgerrolle in einem Wärmebehandlungsofen
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EP1224337A1 (fr) 1999-08-04 2002-07-24 Outokumpu Oyj Appareil destine a supporter un materiau a traiter dans des fours de traitement thermique a fonctionnement continu
JP2002285246A (ja) 2001-03-27 2002-10-03 Chugai Ro Co Ltd カテナリー型連続熱処理炉用ロール取替え装置
KR20100117535A (ko) 2009-04-24 2010-11-03 주식회사 코림 박리화된 다층형 무기 나노입자를 함유하는 열전사 인화리본 및 그의 제조방법
EP2341157A1 (fr) 2009-12-18 2011-07-06 Chugai Ro Co., Ltd. Four de type caténaire
CN102002569A (zh) 2010-11-03 2011-04-06 中冶南方(武汉)威仕工业炉有限公司 辊底式钢板热处理炉炉外换辊的方法及其装置
AT511034B1 (de) 2011-02-04 2013-01-15 Andritz Tech & Asset Man Gmbh Verfahren zum kontrollieren einer schutzgasatmosphäre in einer schutzgaskammer zur behandlung eines metallbandes
DE202012013282U1 (de) 2012-09-04 2015-11-20 Schwartz Gmbh Tragmittel für Öfen

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Publication number Priority date Publication date Assignee Title
CN109576472A (zh) * 2017-09-29 2019-04-05 宝山钢铁股份有限公司 一种热处理炉炉辊快速更换装置

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CN103764855A (zh) 2014-04-30
WO2013014201A1 (fr) 2013-01-31
RU2014106618A (ru) 2015-08-27
KR20140039335A (ko) 2014-04-01
US20140165404A1 (en) 2014-06-19
CA2843033A1 (fr) 2013-01-31
DE102011079771A1 (de) 2013-01-31
DE102011079771B4 (de) 2016-12-01
JP2014523972A (ja) 2014-09-18
BR112014001632A2 (pt) 2017-02-21
EP2737092A1 (fr) 2014-06-04
TW201323813A (zh) 2013-06-16

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