EP0922778A1 - Modular device for the vacuum heat treatment - Google Patents

Modular device for the vacuum heat treatment Download PDF

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Publication number
EP0922778A1
EP0922778A1 EP98410138A EP98410138A EP0922778A1 EP 0922778 A1 EP0922778 A1 EP 0922778A1 EP 98410138 A EP98410138 A EP 98410138A EP 98410138 A EP98410138 A EP 98410138A EP 0922778 A1 EP0922778 A1 EP 0922778A1
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EP
European Patent Office
Prior art keywords
module
heat treatment
enclosure
cells
installation according
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EP98410138A
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German (de)
French (fr)
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EP0922778B1 (en
Inventor
Laurent Pelissier
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Etudes et Constructions Mecaniques SA
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Etudes et Constructions Mecaniques SA
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    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • 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
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • 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
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/029—Multicellular type furnaces constructed with add-on modules
    • 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
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/042—Vacuum furnaces
    • 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
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F27B2017/0091—Series of chambers, e.g. associated in their use

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Photovoltaic Devices (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The common enclosure of the heat treatment installation is a cylinder (10) with a horizontal axis of which at least one end is designed to receive a module (8) in the form of an extended cylinder (10') to which are connected some supplementary cells (14'). A heat treatment installation is operated under a rarified atmosphere and incorporates several treatment cells (14, 15, 16) connected in a horizontal plane to a common airtight enclosure fitted with a handling system (18, 22) for transferring a charge (24) from one cell to another. The common enclosure is a cylinder (10) with a horizontal axis of which at least one end is designed to receive a module (8) in the form of an extended cylinder (10') to which are connected some supplementary cells (14').

Description

La présente invention concerne une installation de traitement thermique sous atmosphère raréfiée du type comportant plusieurs cellules de traitement reliées à une enceinte commune étanche munie de moyens de manutention pour transférer une charge d'une cellule à l'autre.The present invention relates to an installation of heat treatment in a rarefied atmosphere of the type comprising several treatment cells connected to a common enclosure waterproof fitted with handling means to transfer a load from one cell to another.

La demande de brevet Français 2 537 260 décrit une telle installation de traitement thermique. Les cellules de traitement sont disposées horizontalement et en étoile à l'intérieur d'une enceinte étanche cylindrique à axe vertical. Les cellules sont desservies par un dispositif de manutention central.French patent application 2,537,260 describes a such a heat treatment installation. Treatment cells are arranged horizontally and star-shaped inside a sealed cylindrical enclosure with a vertical axis. Cells are served by a central handling device.

Un inconvénient des installations connues de ce type est que le nombre de cellules de traitement est fixe. Il n'y a aucune possibilité de faire évoluer l'installation pour qu'elle comporte des cellules de traitement supplémentaires.A disadvantage of known installations of this type is that the number of treatment cells is fixed. There is no possibility of upgrading the installation so that it has additional processing cells.

Un autre inconvénient de ces installations est qu'il est particulièrement difficile d'intervenir à l'intérieur de l'enceinte, par exemple pour régler le dispositif de manutention. Une telle intervention nécessite le plus souvent un démontage total ou partiel du dispositif de manutention.Another disadvantage of these installations is that is particularly difficult to intervene inside the enclosure, for example to adjust the handling device. Such intervention most often requires disassembly total or partial handling device.

Un objet de la présente invention est de prévoir une installation de traitement thermique enchaíné sous atmosphère raréfiée pouvant recevoir un nombre quelconque de cellules de traitement.An object of the present invention is to provide a heat treatment installation chained under atmosphere rarefied able to receive any number of cells of treatment.

Un autre objet de la présente invention est de prévoir une telle installation qui permette une intervention particulièrement aisée dans l'enceinte.Another object of the present invention is to provide such an installation which allows an intervention particularly easy in the enclosure.

Ces objets sont atteints grâce à une installation de traitement thermique enchaíné sous atmosphère raréfiée comprenant plusieurs cellules de traitement reliées dans un plan horizontal à une enceinte étanche commune munie de moyens de manutention pour transférer une charge d'une cellule à une autre. L'enceinte commune est un cylindre à axe horizontal dont au moins une extrémité est prévue pour recevoir un module sous forme d'un prolongement cylindrique auquel sont reliées des cellules supplémentaires.These objects are achieved thanks to an installation of heat treatment in a rarefied atmosphere including several treatment cells linked in a horizontal plane to a common watertight enclosure provided with handling means to transfer a charge from one cell to another. The enclosure common is a cylinder with horizontal axis of which at least one end is intended to receive a module in the form of a cylindrical extension to which cells are connected additional.

Selon un mode de réalisation de la présente invention, au moins une extrémité du cylindre est munie d'un couvercle amovible à la place duquel peut se monter le module.According to an embodiment of the present invention, at least one end of the cylinder has a cover removable in place of which the module can be mounted.

Selon un mode de réalisation de la présente invention, les moyens de manutention comprennent un chariot se déplaçant parallèlement à l'axe du cylindre et desservant les cellules au moyen d'un élément télescopique.According to an embodiment of the present invention, the handling means include a moving cart parallel to the cylinder axis and serving the cells at by means of a telescopic element.

Selon un mode de réalisation de la présente invention, l'une des cellules est une cellule de trempe à l'huile servant également de cellule de chargement/déchargement.According to an embodiment of the present invention, one of the cells is an oil quenching cell serving also of loading / unloading cell.

Selon un mode de réalisation de la présente invention, le chariot se déplace sur des rails solidaires de l'enceinte, ces rails étant prolongés dans le module par des rails solidaires du module.According to an embodiment of the present invention, the carriage moves on rails integral with the enclosure, these rails being extended in the module by rails integral with the module.

Selon un mode de réalisation de la présente invention, le module est prévu pour être monté par une extrémité sur l'enceinte et par l'autre extrémité sur un autre module.According to an embodiment of the present invention, the module is designed to be mounted at one end on the enclosure and by the other end on another module.

Selon un mode de réalisation de la présente invention, le module est ouvert aux deux extrémités, l'extrémité restant ouverte après le montage du module sur l'enceinte recevant un module supplémentaire ou le couvercle. According to an embodiment of the present invention, the module is open at both ends, the remaining end open after mounting the module on the enclosure receiving a additional module or cover.

Selon un mode de réalisation de la présente invention, l'installation comprend une cellule de trempe sous gaz fonctionnant avec de l'azote ou un mélange comportant au moins 50 % d'azote.According to an embodiment of the present invention, the installation includes a working gas quenching cell with nitrogen or a mixture comprising at least 50% nitrogen.

Ces objets, caractéristiques et avantages, ainsi que d'autres de la présente invention seront exposés en détail dans la description suivante de modes de réalisation particuliers faite à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • la figure 1 représente schématiquement une vue de dessus d'une installation de traitement thermique enchaíné selon l'invention ;
  • la figure 2 représente schématiquement une vue de côté en coupe de l'installation de la figure 1 ; et
  • la figure 3 représente une vue de côté en coupe d'une variante de l'installation de la figure 1.
    • These objects, characteristics and advantages, as well as others of the present invention will be explained in detail in the following description of particular embodiments given without limitation in relation to the attached figures among which:
  • Figure 1 schematically shows a top view of a chained thermal treatment installation according to the invention;
  • Figure 2 schematically shows a side view in section of the installation of Figure 1; and
  • FIG. 3 represents a side view in section of a variant of the installation of FIG. 1.

    • Afin de pouvoir utiliser un nombre quelconque de cellules de traitement dans une installation de traitement thermique enchaíné, la présente invention prévoit une installation modulaire. La modularité est rendue possible grâce à une structure particulière de l'installation.In order to be able to use any number of cells treatment in a thermal treatment installation chained, the present invention provides a modular installation. Modularity is made possible thanks to a structure particular installation.

    La figure 1 illustre en trait plein un module de base 6 d'une installation selon l'invention et en pointillés un module supplémentaire 8.Figure 1 illustrates in solid lines a basic module 6 of an installation according to the invention and in dotted lines a module additional 8.

    Le module de base 6 comprend une enceinte étanche 10 sous forme de cylindre à axe horizontal. Les deux extrémités de ce cylindre 10, munies de collerettes, sont bouchées par des couvercles étanches amovibles 12. Les cellules de traitement sont reliées latéralement au cylindre 10 et se trouvent dans un même plan horizontal. A titre d'exemple, la figure 1 illustre deux cellules de traitement thermique 14 disposées l'une en face de l'autre, une cellule de chargement/déchargement 15, et une cellule de trempe sous gaz 16 disposée en face de la cellule de chargement/déchargement 15. The basic module 6 comprises a sealed enclosure 10 in the form of a cylinder with a horizontal axis. The two ends of this cylinder 10, provided with flanges, are blocked by removable waterproof covers 12. The treatment cells are laterally connected to cylinder 10 and are in the same horizontal plane. As an example, Figure 1 illustrates two heat treatment cells 14 arranged one opposite the other, a loading / unloading cell 15, and a gas quenching cell 16 arranged in front of the loading / unloading 15.

    Comme cela est mieux visible à la figure 2, l'enceinte cylindrique 10 comporte des extensions cylindriques latérales 10-1 munies de collerettes permettant de fixer de manière étanche les cellules de traitement, par exemple à l'aide de boulons.As is best seen in Figure 2, the enclosure cylindrical 10 has lateral cylindrical extensions 10-1 fitted with flanges for sealingly fixing treatment cells, for example using bolts.

    De manière classique, les ouvertures de communication des cellules de traitement thermique 14 avec l'enceinte 10 sont munies de portes (non représentées) qui sont calorifuges mais non étanches. En effet, la pression que l'on fait régner dans l'enceinte 10, de l'ordre de 5 millibars, est celle qui doit régner dans les cellules de traitement 14. Par contre, la cellule de chargement/déchargement 15 et la cellule de trempe sous gaz 16 sont munies de portes étanches, respectivement 15-1 et 16-1, au niveau de leurs ouvertures de communication avec l'enceinte 10. En effet la cellule de chargement/déchargement 15 comporte une porte extérieure 15-2 destinée à insérer les charges à traiter dans l'installation. La cellule 15 doit donc pouvoir être mise à la pression atmosphérique sans perturber l'atmosphère de l'enceinte 10. De même, il règne dans la cellule 16, pendant les opérations de trempe, une pression supérieure à la pression atmosphérique.In a conventional manner, the communication openings heat treatment cells 14 with enclosure 10 are provided with doors (not shown) which are heat-insulated but not waterproof. Indeed, the pressure that is prevailing in the enclosure 10, of the order of 5 millibars, is that which must reign in the treatment cells 14. On the other hand, the loading / unloading 15 and the gas quenching cell 16 are fitted with watertight doors, respectively 15-1 and 16-1, at the level of their communication openings with the enclosure 10. Indeed the loading / unloading cell 15 includes a external door 15-2 intended to insert the loads to be treated in the installation. Cell 15 must therefore be able to be atmospheric pressure without disturbing the atmosphere of the enclosure 10. Likewise, he reigns in cell 16, during the quenching operations, a pressure higher than the pressure atmospheric.

    Un dispositif de manutention est sous la forme d'un chariot 18 se déplaçant parallèlement à l'axe du cylindre 10. Ce chariot 18 se déplace, par exemple, sur des rails 20 s'étendant sur la longueur du cylindre 10. Le chariot 18 est muni d'une fourche télescopique 22 qui est susceptible de s'étirer de part et d'autre du chariot 18 jusqu'au centre de chacune des cellules 14 à 16 pour y prendre et y déposer une charge en cours de traitement.A handling device is in the form of a carriage 18 moving parallel to the axis of the cylinder 10. This carriage 18 moves, for example, on rails 20 extending along the length of the cylinder 10. The carriage 18 is provided with a telescopic fork 22 which is likely to stretch from side and other side of the carriage 18 to the center of each cell 14 to 16 to pick up and drop off a load during treatment.

    A la figure 1, en trait plein, le chariot 18 se trouve au niveau des cellules 15 et 16, et la fourche télescopique 22 pénètre dans la cellule 15 pour y prendre une charge 24. Bien entendu, la cellule 15 a été préalablement mise à la pression de l'enceinte 10 pour pouvoir ouvrir la porte 15-1. Comme cela est représenté en figure 2, la charge 24 est posée sur des supports 26 rehaussant la charge 24 par rapport au fond de la cellule et permettant à la fourche 22 de passer sous la charge. La fourche 22 est levée pour soulever la charge 24 des supports 26, puis rétractée pour ramener la charge 24 sur le chariot 18. Ensuite, le chariot 18 se déplace en face de la cellule souhaitée, par exemple à la position représentée en pointillés. La fourche 22 est alors étirée puis abaissée pour déposer la charge 24 dans la cellule.In Figure 1, in solid lines, the carriage 18 is at cells 15 and 16, and the telescopic fork 22 enters cell 15 to take charge 24 there. heard, cell 15 was previously pressurized enclosure 10 to be able to open door 15-1. As is shown in Figure 2, the load 24 is placed on supports 26 raising the load 24 relative to the bottom of the cell and allowing the fork 22 to pass under the load. The fork 22 is lifted to lift the load 24 from the supports 26, then retracted to bring the load 24 back onto the carriage 18. Then, the carriage 18 moves in front of the desired cell, by example at the position shown in dotted lines. Fork 22 is then stretched and lowered to deposit the load 24 in the cell.

    Dans l'installation de base de la figure 1 (représentée en trait plein), les deux cellules 14 sont, par exemple, des cellules de cémentation, ce qui permettra de traiter deux charges 24 pratiquement en même temps. La seule cellule de trempe 16 suffira car l'opération de trempe est particulièrement rapide par rapport aux opérations de cémentation.In the basic installation of figure 1 (shown in solid lines), the two cells 14 are, for example, case hardening cells, which will treat two charges 24 practically at the same time. The only quenching cell 16 will suffice because the quenching operation is particularly rapid by report on cementation operations.

    Si l'on veut augmenter la production de l'installation ou bien pouvoir effectuer d'autres traitements, tels qu'une nitruration, il faut des cellules de traitement supplémentaires. Dans ce cas, on monte sur l'installation de base un module 8 représenté en pointillés à la figure 1. Ce module 8 comporte une partie cylindrique 10' qui est montée dans le prolongement de l'enceinte cylindrique 10 à la place de l'un des couvercles 12. Le couvercle 12 retiré pourra être utilisé pour fermer l'extrémité libre de la partie cylindrique 10'. Le module 8 pourra comporter, comme cela est représenté, seulement deux cellules supplémentaires 14' reliées l'une en face de l'autre sur la partie cylindrique 10'.If we want to increase the production of the installation or be able to perform other treatments, such as nitriding requires additional treatment cells. In this case, a module 8 is mounted on the basic installation shown in dotted lines in FIG. 1. This module 8 includes a cylindrical part 10 'which is mounted in the extension of the cylindrical enclosure 10 in place of one of the covers 12. The cover 12 removed can be used to close the end free from the cylindrical part 10 '. Module 8 can have, as shown, only two cells additional 14 'connected opposite one another on the cylindrical part 10 '.

    Bien entendu, des modules supplémentaires peuvent être montés sur les extrémités libres du module 8 et du module de base 6 à la place des couvercles 12. On peut ainsi monter en cascade plusieurs modules pour créer une installation de traitement thermique adaptée aux besoins de l'utilisateur.Of course, additional modules can be mounted on the free ends of module 8 and the base module 6 in place of the covers 12. It is thus possible to mount in cascade several modules to create a heat treatment installation tailored to the needs of the user.

    Dans le cas où le chariot 18 est monté sur des rails 20, comme cela est représenté, le module 8 pourra comporter des rails 20' qui viennent se raccorder aux rails 20 lorsque le module 8 est monté sur l'installation de base. In the case where the carriage 18 is mounted on rails 20, as shown, module 8 may include rails 20 'which are connected to the rails 20 when the module 8 is mounted on the basic installation.

    Afin d'intervenir dans l'enceinte 10 ou 10', il suffit de retirer l'un des couvercles 12, ou bien les deux couvercles, ce qui ouvre un couloir permettant à une personne de pénétrer dans l'installation et d'effectuer aisément les opérations nécessaires sur le dispositif de manutention 18, 22 et sur les cellules. En cas de besoin, le dispositif de manutention est déplacé d'un côté ou de l'autre de l'enceinte.In order to intervene in the 10 or 10 'enclosure, it suffices to remove one of the covers 12, or else the two covers, which opens a corridor allowing a person to enter in the installation and easily perform the necessary operations on the handling device 18, 22 and on the cells. If necessary, the handling device is moved on either side of the enclosure.

    Comme cela est représenté en figure 2, l'installation peut comporter une cellule de chargement/déchargement 15 et une cellule 16 de trempe sous gaz. La trempe sous gaz convient à un grand nombre de matériaux. Pour obtenir un bon compromis entre la puissance nécessaire pour brasser le gaz de trempe et la diversité des matériaux que l'on peut tremper sous gaz, on utilise de l'azote ou un mélange contenant au moins 50% d'azote.As shown in Figure 2, the installation may include a loading / unloading cell 15 and a gas quenching cell 16. Gas quenching is suitable for large number of materials. To achieve a good compromise between the power required to mix quench gas and diversity materials that can be quenched under gas, we use nitrogen or a mixture containing at least 50% nitrogen.

    Malgré cela, certains matériaux nécessitent une trempe à l'huile.Despite this, some materials require quenching in oil.

    La figure 3 représente une vue de côté en coupe d'une installation du type de la figure 1, comportant une cellule de trempe à l'huile 30. Cette cellule 30 peut avantageusement remplacer la cellule de chargement/déchargement 15 des figures 1 et 2. La cellule de trempe à l'huile 30 comporte alors une porte extérieure 30-1 servant à extraire et introduire les charges 24 dans l'installation. La cellule 30 comporte par ailleurs un ascenseur 32 permettant de maintenir la charge à une hauteur adaptée au dispositif de manutention 18, 22 et d'immerger la charge 24 dans un bain d'huile 34.FIG. 3 represents a side view in section of a installation of the type of FIG. 1, comprising a oil quenching 30. This cell 30 can advantageously replace the load / unload cell 15 in Figures 1 and 2. The oil quenching cell 30 then has a door outside 30-1 used to extract and introduce charges 24 in the installation. The cell 30 also includes a lift 32 to keep the load at a height adapted to the handling device 18, 22 and to immerse the charge 24 in an oil bath 34.

    Cette disposition est avantageuse car, l'opération de trempe étant la dernière, on peut directement extraire la charge 24 traitée en supprimant le temps de voyage d'une cellule de trempe jusqu'à la cellule de chargement/déchargement. On évite également le surcoût d'une cellule de chargement/déchargement dédiée.This arrangement is advantageous because the operation of quenching being the last, we can directly extract the charge 24 dealt with by removing the travel time of a cell of quenching up to the loading / unloading cell. We avoid also the additional cost of a loading / unloading cell dedicated.

    Bien entendu, la cellule de trempe à l'huile 30 est munie, comme la cellule de chargement/déchargement 15, d'une porte étanche (non représentée) destinée à l'isoler de l'enceinte 10 pour permettre les opérations de chargement/déchargement à pression atmosphérique sans affecter la pression régnant dans l'enceinte 10.Of course, the oil quenching cell 30 is fitted, like the loading / unloading cell 15, with a watertight door (not shown) intended to isolate it from the enclosure 10 to allow loading / unloading operations at atmospheric pressure without affecting the pressure prevailing in enclosure 10.

    Le dispositif de manutention 18, 22 est mu par des moyens classiques. Par exemple, le chariot 18 peut se déplacer le long des rails 20 grâce à un moteur électrique embarqué muni d'un pignon qui engrène sur une crémaillère disposée parallèlement aux rails. La fourche télescopique 22 peut être étirée et rétractée par un système à chaíne ou à leviers. L'élévation et l'abaissement de la fourche peuvent être obtenus par un système à came ou à excentrique.The handling device 18, 22 is moved by conventional means. For example, the carriage 18 can move the along the rails 20 thanks to an on-board electric motor provided with a pinion which meshes on a rack arranged parallel to the rails. Telescopic fork 22 can be stretched and retracted by a chain or lever system. Raising and lowering of the fork can be obtained by a cam system or to eccentric.

    Claims (8)

    Installation de traitement thermique enchaíné sous atmosphère raréfiée comprenant plusieurs cellules de traitement (14, 15, 16) reliées dans un plan horizontal à une enceinte étanche commune munie de moyens de manutention (18, 22) pour transférer une charge (24) d'une cellule à une autre, caractérisée en ce que l'enceinte commune est un cylindre à axe horizontal (10) dont au moins une extrémité est prévue pour recevoir un module (8) sous forme d'un prolongement cylindrique (10') auquel sont reliées des cellules supplémentaires (14').Installation of heat treatment chained under rarefied atmosphere comprising several treatment cells (14, 15, 16) connected in a horizontal plane to an enclosure common waterproof fitted with handling means (18, 22) for transfer a charge (24) from one cell to another, characterized in that the common enclosure is a cylinder with a horizontal axis (10) at least one end of which is intended to receive a module (8) in the form of a cylindrical extension (10 ') to which additional cells (14 ') are connected. Installation de traitement thermique selon la revendication 1, caractérisée en ce qu'au moins une extrémité du cylindre est munie d'un couvercle amovible (12) à la place duquel peut se monter le module (8).Heat treatment installation according to claim 1, characterized in that at least one end of the cylinder is provided with a removable cover (12) in place of which can be fitted the module (8). Installation de traitement thermique selon la revendication 1, caractérisée en ce que les moyens de manutention comprennent un chariot (18) se déplaçant parallèlement à l'axe du cylindre (10) et desservant les cellules au moyen d'un élément télescopique (22).Heat treatment installation according to claim 1, characterized in that the handling means comprise a carriage (18) moving parallel to the axis of the cylinder (10) and serving the cells by means of an element telescopic (22). Installation de traitement thermique selon la revendication 1, caractérisée en ce que l'une des cellules est une cellule de trempe à l'huile (30) servant également de cellule de chargement/déchargement.Heat treatment installation according to claim 1, characterized in that one of the cells is a oil quenching cell (30) also serving as a loading unloading. Installation de traitement thermique selon la revendication 1, caractérisée en ce que le chariot (18) se déplace sur des rails (20) solidaires de l'enceinte (10), ces rails étant prolongés dans le module (8) par des rails (20') solidaires du module.Heat treatment installation according to claim 1, characterized in that the carriage (18) moves on rails (20) integral with the enclosure (10), these rails being extended in the module (8) by rails (20 ') integral with the module. Installation de traitement thermique selon la revendication 1, caractérisée en ce que le module (8) est prévu pour être monté par une extrémité sur l'enceinte (10) et par l'autre extrémité sur un autre module.Heat treatment installation according to claim 1, characterized in that the module (8) is provided for be mounted by one end on the enclosure (10) and by the other end on another module. Installation de traitement thermique selon la revendication 2, caractérisée en ce que le module (8) est ouvert aux deux extrémités, l'extrémité restant ouverte après le montage du module sur l'enceinte (10) recevant un module supplémentaire ou le couvercle (12).Heat treatment installation according to claim 2, characterized in that the module (8) is open to two ends, the end remaining open after mounting the module on the enclosure (10) receiving an additional module or the cover (12). Installation de traitement thermique selon la revendication 1, caractérisée en ce qu'elle comprend une cellule de trempe sous gaz (16) fonctionnant avec de l'azote ou un mélange comportant au moins 50 % d'azote.Heat treatment installation according to claim 1, characterized in that it comprises a gas quenching (16) operating with nitrogen or a mixture containing at least 50% nitrogen.
    EP98410138A 1997-12-02 1998-12-02 Modular device for the vacuum heat treatment Expired - Lifetime EP0922778B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9715506 1997-12-02
    FR9715506A FR2771754B1 (en) 1997-12-02 1997-12-02 MODULAR VACUUM HEAT TREATMENT PLANT

    Publications (2)

    Publication Number Publication Date
    EP0922778A1 true EP0922778A1 (en) 1999-06-16
    EP0922778B1 EP0922778B1 (en) 2002-08-21

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98410138A Expired - Lifetime EP0922778B1 (en) 1997-12-02 1998-12-02 Modular device for the vacuum heat treatment

    Country Status (9)

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    US (1) US6065964A (en)
    EP (1) EP0922778B1 (en)
    JP (1) JPH11237185A (en)
    KR (1) KR100602225B1 (en)
    AT (1) ATE222608T1 (en)
    CA (1) CA2255343C (en)
    DE (1) DE69807305T2 (en)
    ES (1) ES2181148T3 (en)
    FR (1) FR2771754B1 (en)

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    FR2864106A1 (en) * 2003-12-23 2005-06-24 Etudes Const Mecaniques Quenching device for quenching components, notably of heat treated steel, with the circulation of a high pressure quenching gas
    DE10359458A1 (en) * 2003-12-17 2005-07-28 Ald Vacuum Technologies Ag Jobs interlinked heat treatment device, has treatment chambers each corresponding over inner shutters with transport chamber that contains transport equipment for conveying jobs, where equipment are rotated on admission arms

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    FR2801059B1 (en) * 1999-11-17 2002-01-25 Etudes Const Mecaniques LOW PRESSURE CEMENTING QUENCHING PROCESS
    FR2809746B1 (en) 2000-06-06 2003-03-21 Etudes Const Mecaniques GAS-HEATED CEMENTATION SYSTEM
    ATE272128T1 (en) * 2000-09-27 2004-08-15 Patherm Sa HEAT TREATMENT SYSTEM FOR LOADS OF METALLIC WORKPIECES
    EP1555330B1 (en) * 2001-01-26 2007-05-09 Ipsen International GmbH Installation and process for the transport of metallic workpieces and installation for the heat treatment of metallic workpieces
    JP2003183728A (en) * 2001-12-14 2003-07-03 Jh Corp Vacuum heat-treatment apparatus
    US6902635B2 (en) * 2001-12-26 2005-06-07 Nitrex Metal Inc. Multi-cell thermal processing unit
    US6627856B2 (en) 2001-12-26 2003-09-30 Nitrex Metal Inc. Moveable heat exchanger
    EP2541179A3 (en) * 2005-11-23 2014-09-24 Surface Combustion, Inc. Gas generator for an atmospheric furnace for treating one or more articles
    JP6403959B2 (en) * 2014-03-06 2018-10-10 Ｄｏｗａサーモテック株式会社 Carburizing and quenching equipment
    CN110453060A (en) * 2019-09-11 2019-11-15 东莞市升华炉具设备有限公司 Homogenizer

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    Also Published As

    Publication number Publication date
    DE69807305T2 (en) 2003-04-17
    DE69807305D1 (en) 2002-09-26
    CA2255343A1 (en) 1999-06-02
    EP0922778B1 (en) 2002-08-21
    KR100602225B1 (en) 2006-10-24
    CA2255343C (en) 2006-10-17
    US6065964A (en) 2000-05-23
    ATE222608T1 (en) 2002-09-15
    FR2771754B1 (en) 2000-02-11
    JPH11237185A (en) 1999-08-31
    KR19990062712A (en) 1999-07-26
    ES2181148T3 (en) 2003-02-16
    FR2771754A1 (en) 1999-06-04

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