EP3884231B1 - Barre pour four convoyeur a barres, procede de fabrication et utilisation de la barre - Google Patents

Barre pour four convoyeur a barres, procede de fabrication et utilisation de la barre Download PDF

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Publication number
EP3884231B1
EP3884231B1 EP19808558.1A EP19808558A EP3884231B1 EP 3884231 B1 EP3884231 B1 EP 3884231B1 EP 19808558 A EP19808558 A EP 19808558A EP 3884231 B1 EP3884231 B1 EP 3884231B1
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EP
European Patent Office
Prior art keywords
base body
inserts
heated
insert
profile wall
Prior art date
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Active
Application number
EP19808558.1A
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German (de)
English (en)
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EP3884231A1 (fr
Inventor
Hans-Ulrich Dorst
Wilfried Brückner
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Saint Gobain IndustrieKeramik Roedental GmbH
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Saint Gobain IndustrieKeramik Roedental GmbH
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Publication of EP3884231A1 publication Critical patent/EP3884231A1/fr
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Classifications

    • 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
    • F27B9/201—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 walking beam furnace
    • F27B9/202—Conveyor mechanisms 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
    • F27B9/201—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 walking beam 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

Definitions

  • the present invention is in the technical field of heating goods to be heated in a continuous furnace and relates to a beam for a beam conveyor furnace, which serves to support items to be heated in the beam conveyor furnace. Furthermore, the invention relates to a method for producing the beam according to the invention and the use of the beam according to the invention in a beam conveyor furnace.
  • Sheet metal parts in automobile construction can be produced by hot forming at relatively low production costs. To do this, preformed components are heated in a continuous furnace to 900°C to 1000°C, placed in a press by an industrial robot and pressed into the desired shape at around 700°C. Roller or beam conveyor furnaces are used as continuous furnaces, in which the material to be heated is heated and fed to the press at a suitable point in time. In a roller furnace, actively driven rollers serve as a support for sheet metal parts or transport containers on which sheet metal parts are placed. In a beam conveyor furnace, sheet metal parts are moved on step by step by a coordinated movement of two sets of beams, each of which has a plurality of parallel beams that extend in the direction of transport and serve to support the material to be heated.
  • the bars of a first set of bars and the bars of a second set of bars are arranged in a nested manner, with one or more bars of the first set being located next to one or more bars of the second set.
  • the beams can move vertically and/or horizontally as mobile beams or stand still as fixed beams.
  • the material to be heated is always stationary with respect to the beams on which it is currently lying.
  • the beams of the first set of beams are vertically displaceable lifting beams and the beams of the second set of beams are horizontally displaceable traveling beams.
  • the lifting beams moving downwards have the task of depositing the goods to be heated on the mobile beams, which move the goods to be heated a certain distance in a horizontal direction to the furnace outlet, whereby the goods to be heated are then picked up again by the lifting beams moving upwards, so that the mobile beams can be moved back to their starting position in the direction of the furnace outlet.
  • the Mobile beams perform a reciprocal movement in the horizontal direction, which is made possible, for example, by a roller bearing, while the lifting beams perform a reciprocal movement in the vertical direction.
  • the mobile beams can also be made of a metallic material.
  • the sheet steel used in modern automobile construction is often coated with a protective layer made of an aluminum (Al)-silicon (Si) alloy.
  • Al aluminum
  • Si silicon
  • the AlSi protective layer softens and, as a result, contact corrosion occurs when it comes into contact with the beams. This applies in particular to the vertically movable lifting beams, with which the steel sheets usually have longer contact.
  • Possible corrosion mechanisms are diffusion of AISi into the porous structure of the beam, adhesion of AISi to the beam surface or a reaction in the form of a chemical conversion with the beam material. If AISi diffuses into the beam structure, differences in the coefficient of expansion between the matrix of the beam, the infiltrated AISi and reaction products caused by corrosion lead to thermal stresses and, due to the large temperature difference between the beam and the colder sheet metal parts, to spalling on the beam surface or even to beam fracture.
  • AISi can build up up to several millimeters on the beam material, causing the steel sheets to shift during transport through the furnace and as a result to damage to the fiber-lined furnace wall or problems when the sheets are taken over by the industrial robot.
  • the DE 42 03 595 A1 discloses a walking beam furnace, with at least one support tube through which coolant flows, on which at least two high-temperature-resistant top pieces are arranged, the at least one support surface for the charge material running eccentrically essentially parallel to the support tube in its longitudinal direction, with adjacent support surfaces being at a lateral distance from one another and at least partly laterally run next to the support tube.
  • Means of transport in which a heated item is not stored over the entire surface can GB 397 610 A , DE 10 2011 011258 A1 , U.S. 2018/283791 A1 , DE 20 56 957 A1 and DE 103 12 802 B3 be removed.
  • the object of the present invention is to improve beam conveyor furnaces known in the prior art in such a way that a heat treatment of material to be heated, in particular AlSi coated sheet metal parts, with fewer production stops due to changing damaged beams and at lower cost. In addition, unexpected beam breakage should be avoided.
  • the beam in cooperation with other beams of the same set of beams serves to place the material to be heated in the beam conveyor furnace, whereby the material to be heated, depending on the type of use of the beam in the beam conveyor furnace, is subjected to horizontal and/or vertical transport with the beam or is stationary in the beam conveyor furnace is stored. There is no relative movement between the item to be heated and the beam on which the item is placed.
  • the beam can be used as a lifting beam that can only be moved in the vertical direction, in accordance with the WO 2018/019920 described type for a beam conveyor furnace.
  • the item to be heated is preferably a metal part, in particular a sheet steel part, which has an AlSi protective layer.
  • the beam according to the invention comprises an elongate base body which is designed as a hollow profile.
  • the base body In the form of a hollow profile, the base body has a profile wall that delimits an internal cavity.
  • one or more receptacles are formed in the elongate base body, in each of which an insert part is received.
  • the inserts are designed in such a way that they protrude in relation to the elongate base body and together form a support for the material to be heated. In the working position of the beam in the beam conveyor furnace, the inserts project upwards relative to the base body, so that the material to be heated can be placed on the inserts.
  • the receptacles are formed in a base body surface that is at the top when the beam is in the working position in the beam conveyor furnace. The goods to be heated are therefore not on the elongated base body, but only on the inserts used in the receptacles of the base body.
  • the respective bearing surfaces of the inserts together form the bearing surface or bearing plane for the material to be heated.
  • the contact surface between the material to be heated and the beam is smaller than the contact surface that would result if the material to be heated were to lie directly on the base body (i.e. on a base body surface that is at the top in the working position of the beam in the beam conveyor furnace). Due to a lower heat transfer between the material to be heated and the base body, thermal stresses in the base body are reduced in an advantageous manner.
  • the elongate beam for a beam conveyor furnace can have different cross-sectional shapes.
  • the beam preferably has a rectangular or square cross-sectional shape, which in the working position of the beam in the beam conveyor furnace has an overhead beam surface.
  • the elongate body and inserts are made of a refractory material.
  • the inserts, and optionally also the elongate base body preferably consist of a ceramic material which is preferably selected from the group consisting of mullite, alumina, SiC, or mixtures thereof.
  • the inserts, and optionally also the elongate base body preferably consist of a SiC material such as Si-SiC, in particular a porous SiC material such as N-SiC and R-SiC, preferably silicon nitride, silicon oxynitride, silicon-M- oxynitride, or mixtures thereof.
  • the inserts and the elongate base body can consist of one and the same material, in particular ceramic.
  • the inserts on the one hand and the elongate base body on the other hand consist of different materials.
  • the inserts and the elongate base body can be made of different ceramic materials, for example a more durable ceramic material being used for the inserts than for the base body, with the more durable ceramic material generally also being more expensive than the ceramic material of the base body. Costs can be saved due to the cheaper ceramic material of the base body.
  • the inserts to consist of a ceramic material and for the elongate base body to consist of a non-ceramic material, in particular a metallic material. By choosing a metallic material for the base body and a ceramic material for the inserts, costs can be saved in the production of the beam according to the invention.
  • an opening is formed in the profile wall surrounding the cavity for the formation of a respective receptacle for an insert.
  • the opening opens into the cavity.
  • the openings are formed in a profile wall section which is at the top when the beam is in the working position in the beam conveyor furnace, which applies in particular to a hollow profile with a square or rectangular cross-section.
  • the receptacles for the inserts are each formed by the opening in the profile wall and the underlying area of the cavity of the hollow profile.
  • the inserts lie on the opposite profile wall section (in the working position of the beam in the beam conveyor furnace, on the bottom). In this way, the inserts are securely accommodated in the base body.
  • An inner surface of the profile wall section facing the cavity is preferably provided with a depression opposite the openings, into which a lower end face of the insert part accommodated in the receptacle is inserted.
  • the inserts are loose, i.e. can be removed non-destructively, inserted into the mounts. Accordingly, there is no non-positive and/or material connection between the inserts and the base body. On the one hand, this enables simple production of the beam and, on the other hand, simple replacement of individual or all insert parts, especially if they are damaged, with the base body and undamaged insert parts being able to be reused, which means that costs can be saved.
  • the inserts received in the receptacles are each connected in a form-fitting manner to the associated receptacle in the direction perpendicular to the direction of extension of the base body (in the direction out of the receptacle), so that the insert part cannot be pulled exclusively perpendicular to the direction of extent of the base body can be extracted from the recording.
  • the inserts preferably each have a convex area (bulge) which engages in an undercut area of the receptacle.
  • the convex area of the insert covers the profile wall (upper profile wall section) internally behind.
  • the insert part can advantageously be designed in such a way that, opposite the convex area, it has a concave area which is shaped in a manner complementary to the convex area. The insert can then be inserted into the receptacle in a simple manner by tilting, in particular in a direction perpendicular to the extension of the base body.
  • the contact surface between the cooler material to be heated and the base body can be reduced by the insert parts, which together form a support for the material to be heated, compared to a direct bearing on the base body, which prevents large thermal stresses from building up.
  • the inserts are designed according to one embodiment of the invention in such a way that they each have one or more upwardly directed projections (in the working position of the beam in the beam conveyor furnace), which together form the support for the material to be heated. The material to be heated is then exclusively against these projections of the inserts. This measure allows the contact surface between the material to be heated and the beam to be reduced even further.
  • the inserts are each designed in such a way that they have one or more projections, in particular web-like projections, directed towards the base body.
  • the contact area and thus the heat transfer between the inserts and the base body can advantageously be reduced, so that the formation of thermal stresses is inhibited even better.
  • the heat transfer between the inserts and the base body is also reduced. Both effects combine in an advantageous manner.
  • another important advantage of this configuration results from the fact that contamination of the base body with AISi or contact reaction with AISi due to AISi that is on the insert is avoided.
  • the inserts can be arranged in any way in the beam according to the invention, as long as the material to be heated can rest securely on the inserts.
  • a plurality of insert parts are distributed, in particular evenly distributed, along the extension direction of the elongate base body.
  • the inserts are each plate-shaped, with the plate-shaped inserts being accommodated in the receptacles with plate planes aligned parallel to the extension of the elongate base body.
  • the support for the material to be heated is formed by the respective (upper) end faces of the plate-shaped inserts.
  • projections directed upwards and in the direction of the base body can be formed in a simple manner.
  • the projections forming a support for the material to be heated are formed in the region of the (upper) end face of the plate-shaped insert part.
  • the projections directed toward the base body are formed in the region of the two plate surfaces (parallel to one another) extending in the plane of the plate.
  • a form-fitting connection with the receptacles in the direction perpendicular to the extent of the base body can be produced in a simple manner.
  • the base body of the beam according to the invention has a layer of a fiber material on the outer surface, which can absorb and bind molten AISi. This prevents AISi from touching the base body.
  • the fiber material is arranged on the outer surface facing upwards in the working position of the beam in the beam conveyor furnace, it being advantageous if the inserts are each passed through the fiber material so that the fiber material has no physical contact with the material to be heated.
  • the fibrous material is preferably a material which is chemically resistant to AISi, for example Al 2 O 3 -containing fibrous paper.
  • the invention extends to the use of the beam according to the invention in a beam conveyor furnace as a beam for placing items to be heated.
  • the beam can be used as a vertically and/or horizontally movable mobile beam or as a stationary fixed beam.
  • the beam is used as a walking beam that can only be moved vertically.
  • the base body 2 of a beam 1 according to the invention for a beam conveyor furnace is illustrated in different views. Accordingly, the base body 2 is designed in the form of an elongated square hollow profile with a rectangular cross-section. The base body 2 is shown in a shortened form, which results from the broken lines drawn in.
  • the hollow profile of the base body 2 is formed by a profile wall 5 which delimits an internal cavity 3 .
  • the profile wall 5 comprises an upper profile wall section 5-1 and opposite a lower profile wall section 5-2.
  • the profile wall 5 is completed by two parallel lateral profile wall sections 5-3.
  • the profile wall 5 has an outer profile surface 6 facing the external environment and an inner profile surface 7 facing the cavity 3 .
  • the upper and lower profile wall sections 5-1, 5-2 are typically horizontal, and the two lateral profile wall sections 5-3 are vertical.
  • the upper profile wall section 5 - 1 is provided with a plurality of slot-shaped openings (perforations) 4 which are arranged in rows along the extension of the base body 2 .
  • openings 4 which are each bounded by an edge 18 formed by the profile wall 5, open into the cavity 3.
  • a depression 8 is formed in the profile inner surface 7 of the lower profile wall section 5-2.
  • the openings 4 are each embodied in the form of slits, with different shapes being possible here as well.
  • an insert 21 can be inserted loosely, which is based on the Figures 2a to 2d is explained in more detail.
  • FIG. 2a to 2d a first exemplary embodiment of the beam 1 according to the invention is illustrated in a typical working position in the beam conveyor furnace.
  • the bar 1 comprises a base body 2 with slot-shaped openings 4, as in the Figures 1a to 1c is shown.
  • an insert 21 is loosely inserted, which passes through the cavity 3 and is supported on the profile inner surface 7 of the lower profile wall section 5-2.
  • Each opening 4 forms, together with the cavity 3, a receptacle 19 for the insert 21.
  • the insert 21 is not connected to the base body 2 in a non-positive or material manner.
  • the insert 21 is in the form of a plate and has an upper face 9 and a lower face 10 .
  • the plane of the plate-shaped insert 21 is aligned parallel to the extension of the base body 2 and parallel to the two lateral profile wall sections 5-3. Since the vertical dimension of the insert 21 (i.e. the shortest or vertical dimension between the upper end face 9 and the lower end face 10) is greater than the vertical dimension of the base body 2 without the lower profile wall section 5-3 in the area of the recess 8, the Insert part 21 upwards from base body 2, i.e. has a protruding area 11 in relation to profile outer surface 6 of upper profile wall section 5-1. The protruding area 11 of the insert part 21 has the upper face 9 at the end.
  • the upper end faces 9 of all the inserts 21 serve as contact or support surfaces and together form a support 23 for a material to be heated in the beam conveyor furnace.
  • the beam conveyor furnace typically has a large number of parallel beams 1, the upper end faces 9 of all beams 1 together forming the support 23 for the material to be heated.
  • a material to be heated lying on the upper end faces 9 of a beam 1 does not lie against the profile outer surface 6 of the beam 1, but only has contact with the inserts 21.
  • the upper end faces 9 of a beam 1 in total have a (contact) Have an area that is smaller than the profile outer surface 6 of the upper profile wall section 5-1, whereby (compared to the direct placement of the material to be heated on the profile outer surface 6) the heat transfer between the material to be heated and beam 1 is reduced.
  • all objects to be hot-formed can be considered as the material to be heated, in particular metal parts, such as AlSi-coated steel sheets, which are used as vehicle body parts, for example for the B-pillar of a car.
  • the insert 21 can have different shapes. A possible embodiment is in the Figures 2a to 2d illustrated.
  • the plate-shaped insert 21 has different end faces, each of which is arranged perpendicularly to the plane of the plate. In addition, it has two parallel plate surfaces 14 in the plane of the plate.
  • the upper face 9 and the lower face 10 are each flat, with in the sectional views of Figure 2a or 2d results in a straight line. In the inserted state and in the working position of the beam 1, the upper face 9 and the lower face 10 are arranged horizontally.
  • the insert 21 also has two lateral end faces 12, 13 with a generally vertical orientation, which are curved surfaces in the sectional views of FIG Figures 2a and 2b recognizable as curved lines.
  • a first lateral face 12 is convex in shape and has a bulge 15 .
  • the opposite second lateral face 13 is concave in shape and has a trough 16 .
  • the two plate surfaces 14 are not flat, but have linear webs 17 running in the vertical direction (recognizable in Figure 2b ) which extend from the upper end surface 9 to the lower end surface 10 and each project perpendicularly from the plate surface 14 (ie each towards the opposite edge 18 of the opening 4).
  • the bulge 15 engages behind the upper profile wall section 5-1 in the area of the opening 4, which forms an undercut 22, so to speak, so that a form-fitting connection is established between the insert part 21 and the base body 2 in the direction perpendicular to the extent of the base body 2 (in the direction out of the opening 4) results.
  • the insert part 21 Due to the depression 16, which is shaped complementarily to the bulge 15, the insert part 21 can be easily inserted into the opening 4 by tilting it vertically.
  • the contact surface of the insert part 21 with the base body 2 or profile wall 5 is reduced by the linear webs 17 on the plate surfaces 14 which abut the edge 18 of the opening 4 .
  • the transfer of heat between insert 21 and base body 2 is inhibited and the risk of contamination of base body 2 with AISi by AISi, which is located on insert 21, is reduced.
  • the webs 17 ensure a secure positioning of the insert 21 in the receptacle 19, in particular in connection with the lower end face 10 inserted into the recess 8.
  • Both the base body 2 and the inserts 21 are made of a refractory material.
  • the insert 21 and optionally the base body 2 consists of a ceramic material, for example a SiC material such as Si—SiC.
  • the base body 2 can consist of a ceramic or a non-ceramic material.
  • the beam 1 in the area of the upper profile wall section 5-1 on the profile outer surface 6 comprises a fiber layer 20 made of a fiber material, here for example Al 2 O 3 -containing fiber paper.
  • the fiber sheet 20 can absorb and bind molten AISi, thereby preventing AISi from touching the base body 2 .
  • the protruding area 11 or the upper end face 9 forming a contact surface for the material to be heated breaks through the fiber layer 20.
  • the plate surfaces 14 of the insert part 21 each have a wavy contour with closely spaced, elongate webs 17 (wave crests).
  • the webs 17 extend in the vertical direction.
  • This surface design can on the one hand reduce the heat transfer between the insert 21 and the base body 2, and on the other hand the insert 21 is reliably accommodated in the opening 4 with a good seat.
  • this non-planar surface configuration can also be formed in the direction in which the base body 2 extends.
  • the invention provides an improved beam for a beam conveyor furnace for supporting a material to be heated. Due to the reduced contact surface between the inserts and the goods to be heated, heat transfer between the goods to be heated can occur and beams are reduced to reduce thermal stress and prevent body chipping or body fracture. This is supported by a reduced contact area between inserts and base body, which also has the advantage of reduced contamination of the base body with AISi and reduced contact corrosion.
  • the inserts can be inserted into the base body and removed again in a simple manner, which enables easy replacement.
  • a fiber layer on the outer surface of the profile allows molten AISi to be absorbed and bound, which further reduces the risk of contact corrosion of the base body with AISi, which is equally advantageous in terms of avoiding mechanical damage to the base body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Claims (12)

  1. Poutre (1) pour un four à convoyeur de poutre pour déposer un matériau à chauffer, comprenant :
    - un corps de base allongé (2),
    - un ou plusieurs réceptacles (19) dans le corps de base allongé (2), dans chacun desquels est reçu un insert (21), les inserts (21) faisant saillie par rapport au corps de base allongé (2) et formant ensemble un support (23) pour le matériau à chauffer,
    dans lequel le corps de base allongé (2) est un profilé creux qui a une paroi de profilé (5) délimitant une cavité intérieure (3), dans lequel la paroi de profilé (5) a une ou plusieurs ouvertures (4) dans chacune desquelles un insert (21) est inséré, dans lequel les ouvertures (4) sont formées dans une section de paroi de profilé supérieure (5-1) située au sommet dans la position de travail de la poutre dans le four à convoyeur de poutre,
    dans lequel les inserts (21) sont insérés de manière lâche dans les réceptacles (19) et reposent sur une section de paroi de profilé inférieur (5-2) opposée à la section de paroi de profilé supérieur (5-1), dans lequel les inserts (21) sont chacun en forme de plaque, dans lequel le support (23) pour le matériau à chauffer est formé par des faces d'extrémité (9) des inserts en forme de plaque (21) et dans lequel les inserts en forme de plaque (21) sont reçus dans les réceptacles (19) avec des plans de plaque alignés parallèlement à l'extension du corps de base allongé (2).
  2. Poutre (1) selon la revendication 1, dans laquelle une surface intérieure (7) de la paroi de profilé (5) tournée vers la cavité (3) présente, en face d'une ouverture respective (4), un évidement (8) dans lequel est reçue une surface inférieure (10) de l'insert (21) guidé à travers l'ouverture (4).
  3. Poutre (1) selon la revendication 1 ou 2, dans laquelle les inserts (21) sont reliés de manière positive au réceptacle (19) les recevant dans la direction perpendiculaire à l'extension du corps de base (2).
  4. Poutre (1) selon la revendication 3, dans laquelle les inserts (21) présentent chacun une zone convexe (15) qui s'engage dans une contre-dépouille (22) du réceptacle (19).
  5. Poutre (1) selon l'une des revendications 1 à 4, dans laquelle les inserts (21) présentent chacun une ou plusieurs saillies (17'), notamment des saillies en forme de bande, qui forment ensemble le support (23) pour le matériau à chauffer.
  6. Poutre (1) selon l'une des revendications 1 à 5, dans lequel les inserts (21) présentent chacune une ou plusieurs saillies (17), notamment en forme de bande, dirigées vers le corps de base (2).
  7. Poutre (1) selon l'une des revendications 1 à 6, dans laquelle une pluralité d'inserts (21) est disposée de manière répartie dans le prolongement du corps de base (2).
  8. Poutre (1) selon l'une des revendications 1 à 7, dans laquelle les inserts (21) sont réalisés dans un matériau différent du matériau du corps de base (2).
  9. Poutre (1) selon l'une des revendications 1 à 8, dans laquelle le corps de base (2) est muni sur sa surface extérieure (6) d'une couche (20) de matériau fibreux.
  10. Poutre (1) selon la revendication 9, dans laquelle les inserts (21) sont chacun passés à travers la couche (20) de matériau fibreux.
  11. Procédé de fabrication d'une poutre (1) pour un four à convoyeur de poutre pour déposer un matériau à chauffer selon l'une quelconque des revendications 1 à 10, comprenant les étapes suivantes :
    - réaliser un corps de base allongé (2),
    - former un ou plusieurs réceptacles (19) dans le corps de base allongé (2),
    - insérer un insert (21) dans un réceptacle respectif (19).
  12. Utilisation de la poutre (1) selon l'une quelconque des revendications 1 à 10 dans un four à convoyeur de poutre comme poutre de dépôt de matériau à chauffer.
EP19808558.1A 2018-11-22 2019-11-19 Barre pour four convoyeur a barres, procede de fabrication et utilisation de la barre Active EP3884231B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018129446.8A DE102018129446B4 (de) 2018-11-22 2018-11-22 Balken für Balkenförderofen
PCT/EP2019/081701 WO2020104403A1 (fr) 2018-11-22 2019-11-19 Longeron conçu pour un four à convoyeur à longerons

Publications (2)

Publication Number Publication Date
EP3884231A1 EP3884231A1 (fr) 2021-09-29
EP3884231B1 true EP3884231B1 (fr) 2022-11-23

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EP19808558.1A Active EP3884231B1 (fr) 2018-11-22 2019-11-19 Barre pour four convoyeur a barres, procede de fabrication et utilisation de la barre

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EP (1) EP3884231B1 (fr)
DE (1) DE102018129446B4 (fr)
ES (1) ES2935167T3 (fr)
WO (1) WO2020104403A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011258B4 (de) * 2010-11-26 2013-05-29 Otto Junker Gmbh Ofenanlage und Verfahren zur Wärmebehandlung von Werkstücken

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB397610A (en) * 1932-05-03 1933-08-31 Alfred Smallwood Improvements in or relating to furnaces and the like and to the conveyance of goods therethrough
DE2117148A1 (en) 1971-04-08 1972-10-19 Koppers Wistra Ofenbau Gmbh Rocker bar furnace for metals - having up-and down only rockers and separate travelling instead of fixed bars
DE7214686U (de) * 1972-04-19 1976-03-25 Koppers-Wistra-Ofenbau Gmbh, 4000 Duesseldorf Reiter fuer waermguttraeger in industrieoefen
DE4133698A1 (de) * 1991-10-11 1993-04-15 Italimpianti Deutschland Gmbh Hubbalkenofen
DE4203595C2 (de) * 1992-02-10 2001-07-19 Loi Thermprocess Gmbh Vorrichtung zum Abstützen von Einsatzgut in einem Erwärmungsofen
DE4324421C2 (de) 1993-07-21 2002-06-06 Loi Thermprocess Gmbh Vorrichtung zum Abstützen von Wärmebehandlungsgut in einem Erwärmungsofen
DE19710870A1 (de) * 1997-03-15 1998-09-17 Techint Italimpianti Deutschla Hubbalkenofen
DE10312802B3 (de) 2003-03-21 2004-07-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Werkstückträger zum Wärmebehandeln von Werkstücken
US11293695B2 (en) 2016-07-28 2022-04-05 Autotech Engineering S.L. Conveying through furnaces
DE102017205046A1 (de) * 2017-03-24 2018-09-27 Schunk Kohlenstofftechnik Gmbh Werkstückträger und Verfahren zur Herstellung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011258B4 (de) * 2010-11-26 2013-05-29 Otto Junker Gmbh Ofenanlage und Verfahren zur Wärmebehandlung von Werkstücken

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DE102018129446A1 (de) 2020-05-28
ES2935167T3 (es) 2023-03-02
EP3884231A1 (fr) 2021-09-29
DE102018129446B4 (de) 2024-03-14
WO2020104403A1 (fr) 2020-05-28

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