EP2365100B1 - Procédé et dispositif pour produine une piece moulee ayant au moins deux domaines de structure avec des ductilites differentes - Google Patents

Procédé et dispositif pour produine une piece moulee ayant au moins deux domaines de structure avec des ductilites differentes Download PDF

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Publication number
EP2365100B1
EP2365100B1 EP10401175.4A EP10401175A EP2365100B1 EP 2365100 B1 EP2365100 B1 EP 2365100B1 EP 10401175 A EP10401175 A EP 10401175A EP 2365100 B1 EP2365100 B1 EP 2365100B1
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EP
European Patent Office
Prior art keywords
semi
finished product
furnace
intermediate storage
storage location
Prior art date
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EP10401175.4A
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German (de)
English (en)
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EP2365100B8 (fr
EP2365100A3 (fr
EP2365100A2 (fr
Inventor
Marc Horlacher
Markus Löcker
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Kirchhoff Automotive Deutschland GmbH
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Kirchhoff Automotive Deutschland GmbH
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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • 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
    • C21D1/84—Controlled slow cooling
    • 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
    • C21D2221/00—Treating localised areas of an article
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Definitions

  • the invention relates to a method for producing a molded part having at least two structural regions of different ductility from a semifinished product, in particular a board made of hardenable steel with a heating in a continuous furnace and a curing process, wherein the semifinished product is heated in the continuous furnace to Austenitmaschinestemperatur, hereinafter a first Partial region of the semifinished product is cooled to a temperature at which the structure of the portion is converted into ferritic-pearlitic structure, while a second portion of the semifinished product is kept at Austenitmaschinestemperatur, subsequently the semifinished product is formed and annealed in a press-hardening tool to the molding.
  • a B-pillar is known as a body component for a motor vehicle, said B-pillar is designed in the form of a longitudinal profile having a first length section with a predominantly martensitic material structure and a strength above 1,400 N / mm 2 and a second length portion of higher ductility with having a predominantly ferritic-pearlitic material structure and a strength of less than 850 N / mm 2 .
  • a method of manufacturing a metal mold component for automotive components which has regions with higher ductility.
  • a board made of suitable steel is provided which in partial areas, which should have a higher strength than the rest of the component in the finished molded component, in a time of less than 30 seconds to a temperature between 600 ° C and 900 ° C is brought.
  • the heat-treated board is formed in a press tool to form the molding. The remuneration is also made in the press tool.
  • a method of a similar kind is known.
  • a board or a semi-finished product is heated to Austenitmaschinestemperatur and then inserted into a forming tool with a press.
  • the shaping of the semifinished product and quenching of the semifinished product takes place by the contact with the forming tool.
  • the semi-finished product is then shaped and cured in the forming tool.
  • the DE 102 08 216 C1 discloses a method for producing a cured component having two different microstructures.
  • the component is first heated to Austenitmaschinestemperatur and then fed to a curing process.
  • a first region is quenched to a temperature above the martensite start temperature and then held on this, so that forms a pearlitic-ferritic microstructure.
  • a second area is maintained at austenitizing temperature.
  • the workpiece is cured as a whole, which possibly happens in a mold.
  • the US 2007/0257407 A1 shows a furnace for heating steel sheets. This comprises a plurality of superimposed planes, each of which can accommodate a steel sheet. In each level is also a transport mechanism for moving the sheet during the heating process intended. On opposite sides of the furnace, a loading and unloading device can be provided, which are movable vertically to bring in and out of sheets in a horizontal direction in any plane.
  • EP 2 110 448 A2 a method for heating a sheet metal workpiece in a continuous furnace, wherein the workpiece is moved out of the oven after complete heating so far that cools a portion of the workpiece.
  • the present invention seeks to provide a method which is easy to control, energie attorney can be operated and a treatment and shaping of corresponding semi-finished products or boards in the Taktrythmus of Presshärtetechnikmaschinemaschinees without affecting the flow rate through the continuous furnace allows.
  • the invention proposes that the semifinished product, after passing through the continuous furnace with the second subregion, is placed in a chamber of a buffer store, in particular a buffer furnace, and stored there, the buffer holding the second subregion at austenitizing temperature during the first subregion projecting out of the chamber of the intermediate storage, in particular of the buffer oven, and this projecting area being cooled in air or with air to the temperature, in which the ferritic-pearlitic structure is formed, the semifinished product is subsequently removed from the intermediate store, in particular the buffer oven, and transferred to the press-hardening tool for the purpose of forming and tempering.
  • the continuous furnace can be operated continuously at normal speed.
  • the semifinished product After passing through the continuous furnace, the semifinished product is placed in the buffer store and held there in partial areas at Austenitmaschinestemperatur and cooled in some areas such that adjusts a ferritic-pearlitic structure.
  • the storage of the semifinished product in the buffer does not affect the speed of passage of the parts through the continuous furnace.
  • the semifinished product is removed from the intermediate store and cyclically transferred to the hardening tool for the purpose of forming and tempering. This procedure is easy to control and readily applicable to different geometries of the semifinished product.
  • the flow rate through the continuous furnace is not necessarily coupled with the transfer to the hardness tool, but by the buffer a corresponding timing is possible, so that the continuous operation of the continuous furnace and the cyclic operation of the hardness tool easily adapted to each other can be.
  • the cache can be designed differently.
  • the temporary storage is provided as a buffer oven, which is equipped with the semi-finished, so that the second portion is within the furnace chamber of the buffer furnace or in a corresponding heat range of the buffer, while the first portion of the semifinished in a suitable manner slowly to target temperature is cooled.
  • the cooling process can take place over a time range of approximately 60 seconds.
  • the buffer in particular the buffer furnace in its furnace chamber has several deposit areas for several semi-finished parts, wherein the time sequentially removed from the continuous furnace semi-finished parts are each inserted into one of the deposit areas and cyclically passed to the press hardening tool after the partial cooling ,
  • This design makes it possible to store a plurality of semi-finished products or blanks in the buffer, so that a continuous decrease of semi-finished products can take place from the continuous furnace and the removal of the semi-finished parts can be cyclically carried out according to the desired cooling to the hardening tool without the speed of the Continuous furnace would have to be reduced.
  • the recording capacity of the buffer is adapted to the sequence of the procedure, so that also the hardening tool can work in the corresponding working cycle.
  • a possible training for this purpose is seen in that two buffers, in particular buffer ovens are positioned on both sides next to the exit of the continuous furnace, which are alternately charged with semi-finished, which is removed from the continuous furnace.
  • the air stream serving for cooling being guided into the gap between the first portion of the semifinished product and the water cooling is preferably sucked through this gap.
  • the water cooling above the entire semi-finished part, which forms the first portion extends.
  • This transition region is to make different width depending on the application of the finished molded part.
  • an oven door at Output end of the continuous furnace is provided above a zone of the semi-finished product, which is formed between the first and second partial area, wherein the width of the zone is determined by the thickness of the oven door.
  • this transition region can be determined so that it can be, for example, at least 40 mm and a maximum of 200 mm. Especially in the automotive industry, in which moldings are desired that have a specific crash behavior, this variable transition area is conducive to ensure appropriate performance of the finished workpiece.
  • the temporary storage is generated by an extension of the discharge area of the continuous furnace, wherein the semi-finished products each lifted with the second portion within the extension of the support plane of the continuous furnace and is shifted to one or more below or above or formed levels while each of the first portions of the continuous furnace or the extension in the transport direction of the continuous furnace are projecting positioned and cooled.
  • the buffer is not a separate element, which is to be arranged for example next to the outlet end of the continuous furnace, but the buffer is by an extension of the delivery area of the continuous furnace itself generated.
  • this extension of the continuous furnace a positioning of the semi-finished products heated in the continuous furnace in the desired manner, so that the second portion remains within the corresponding region of the continuous furnace, while the first portion of the semi-finished protrudes from this extension of the continuous furnace and in This projecting region can be cooled, as described above.
  • Such a configuration is low energy, but the continuous furnace must be designed accordingly.
  • the intermediate memory has contact areas or contact zones with different temperatures, in particular austenitizing temperature on the one hand and a temperature at which the ferritic-pearlitic structure is formed, so that the semifinished product deposited thereon forms corresponding structural zones in different areas ,
  • the buffer can have heated areas and cooled areas which form contact areas or contact zones on which the semifinished product is deposited, so that different areas of the semifinished product can be kept or cooled to the desired degree to temperature.
  • the invention further relates to an apparatus for producing molded parts, each having two structural regions of different ductility from semi-finished products, in particular blanks, made of hardenable steel, consisting of a continuous furnace with a continuous conveyor, by means of which the semifinished product can be transported through the continuous furnace, and a press-hardening tool of which the semifinished product is tempered and formed into the molded part.
  • At least one intermediate storage is provided, and at least one handling apparatus for handling the semifinished product, by means of which the semifinished products can be received at the delivery end of the continuous furnace and in the intermediate storage can be stored, wherein the buffer memory has a first heated area for receiving and supporting a second portion of the semifinished part, and a second cooled portion for receiving a first portion of the semi-finished part, further comprising a handling apparatus or the handling apparatus is provided by means of which the semi-finished parts can be removed from the buffer and inserted into the press-hardening tool.
  • the arrangement of the buffer including the corresponding handling apparatus ensures that on the one hand the continuous furnace can be operated continuously, on the other hand, the press hardening tool can be operated in the best possible power stroke, wherein the corresponding moldings can be stored, brought to the desired temperature by the buffer and the handling apparatuses and then converted and tempered in the press hardening tool.
  • a handling apparatus In coordination with the working cycle either a handling apparatus can be sufficient, which takes over both the moldings from the continuous furnace and spends in the buffer, as well as the intermediate parts in the form of molded parts transferred to the press hardening tool. If the power stroke does not allow the arrangement of a single handling apparatus, the arrangement of, for example, two handling devices is possible by means of which the two working operations can be performed.
  • the temporary storage has a plurality of storage spaces for semi-finished parts.
  • the temporary storage and / or storage locations of the temporary storage medium are or are vertically adjustable parallel to the transport direction of the continuous conveyor and / or transversely thereto.
  • the temporary storage or the storage locations of the buffer in the transport direction of the continuous conveyor for example, in the direction of the handling apparatus and formed away from it. Furthermore, they are vertically adjustable trained, so that by means of the handling apparatus can always be worked on the same horizontal plane and the different storage spaces of the cache are adjustable in this plane so that either moldings inserted or moldings can be removed.
  • the storage spaces of the buffer store have heatable and / or coolable contact areas, on which a semi-finished part can be stored and heated in appropriate zones and / or cooled.
  • the buffer is a buffer furnace whose entrance has an oven door, so that the inserted semi-finished part is arranged with the second portion inside the buffer furnace and with the first portion outside thereof, wherein in the region of the arrangement of the first portion a cooling device is arranged.
  • the transition area between the two areas with different ductility is influenced by the corresponding dimensioning of the oven door, ie its thickness, ie it is increased or decreased, depending on the desired design of the molded part.
  • the cooling device is an air cooling with fan.
  • the cooling device is coupled to a suction fan, so that the air flow is sucked off.
  • a plate-shaped water cooling element is arranged, wherein an educated between this and the portion of the semi-finished part gap to the cooling device, in particular a fan with cooling air is connected.
  • the area of the water cooling element facing the semifinished part is dyed black.
  • such a plate-shaped water cooling element designed in the form of a cooling plate ensures equalization of the cooling, which leads to a homogeneous structure in the cooled region of the molded part.
  • the plate-shaped water cooling element may preferably consist of steel with good heat conduction.
  • the method is used to produce a molded part having at least two structural regions of different ductility from a semifinished product 1, in particular a circuit board, made of hardenable steel.
  • a plant for the realization of the method consists for example of a continuous furnace 2, which has a continuous conveyor, which runs through the continuous furnace 2 and which transports the semifinished product 1, in particular the blanks, in the direction of passage 3.
  • the semifinished product 1 is heated to Austenitmaschinestemperatur, for example to about 930 ° C.
  • a first portion 4 of the semifinished product 1 is cooled to a temperature at which the structure of the portion 4 is converted into a ferritic-pearlitic structure. This happens at approx. 500 ° C. The cooling is sufficiently slow that the desired structure can be formed.
  • a second portion 5 of the semifinished product is kept at Austenitmaschinestemperatur, ie at about 930 ° C.
  • the semifinished product 1 is introduced into a pressing tool 6 and shaped and tempered therein.
  • a pressing tool 6 Such press hardening tools are known in the art.
  • the semifinished product 1 is inserted after passing through the continuous furnace 2 with the second portion 5 in a chamber of a buffer 7, for example in the form of a buffer furnace 8, as illustrated by the movement arrow 9.
  • the second subregion 5 is thus maintained at austenitizing temperature in the corresponding intermediate store 7 or in the buffer oven 8, which is heated accordingly.
  • the first portion 4 protrudes from the chamber of the buffer 7, in particular the buffer furnace 8 before.
  • This projecting area is cooled slowly in air or preferably with air to the temperature at which the ferritic-pearlitic structure is formed.
  • the cooling time is about 60 seconds, for example.
  • the air used for cooling sucked by means of a blower.
  • the semi-finished product 1 pretreated in this way is then removed from the intermediate storage 7, in particular the buffer oven 8, and transferred to the hardening tool 6 for the purpose of forming and tempering, as illustrated by the movement arrow 10.
  • two intermediate storage 7 or two buffer ovens 8 can be positioned on both sides next to the exit of the continuous furnace 2, which are alternately charged with semi-finished product 1, which is removed from the continuous furnace 2.
  • the furnace chamber of the buffer 7 or the buffer furnace 8 is closed by an oven door 11 to the outside except for a passage gap for the semifinished product 1.
  • a water cooling 12 is provided in the first portion 4 of the semifinished product 1, by means of which the cooling effect is enhanced.
  • the air stream serving for cooling is guided into the gap 13 between the first subregion 4 and the water cooling 12, preferably through this gap 13 sucked, so that the cooling effect is enhanced to affect the desired course of cooling according to the desired timing.
  • the water cooling 12 is located above the entire semi-finished part 1, which forms the first portion 4.
  • the water cooling may also extend below the area of the oven door 11 (partially).
  • the transition region which forms between the first subregion 4 and the second subregion 5 can be enlarged or reduced, so that it can correspond to the requirements of the finished workpiece, for example 40 mm or up to 200 mm ,
  • the buffer 7 can be generated by an extension 15 of the delivery area of the continuous furnace 2.
  • the semi-finished parts 1 can each be lifted with the second portion 5 within the extension 15 of the support plane of the continuous furnace 2 or otherwise transported in the transverse direction, so that they can be moved into several levels below or above, as in FIG. 3 is illustrated, wherein each of the first portions 4 from the continuous furnace 2 and the extension 15 in the transport direction 3 of the continuous furnace 2 are projecting positioned and cooled, as also in FIG. 3 is illustrated.
  • the Continuous furnace 2 can be used to form the intermediate memory 7.
  • a corresponding latch 7 may be provided with contact surfaces 16, 17 in the storage areas of the semifinished products 1, are positioned on each of the semi-finished parts 1, wherein these contact surfaces or contact zones 16, 17 have different temperatures.
  • the austenitizing temperature can thus be maintained in the region, for example of the contact surfaces 17, while on the other hand a lower temperature is provided in the regions 16, in which the ferritic-pearlitic structure is formed. In this way it is possible to form the semifinished product 1 deposited thereon in different regions with corresponding structural zones.
  • the movements which are indicated by the movement arrows 9 and 10, respectively, can be generated by handling apparatuses which are designed and provided for handling the molded parts 1. For the sake of clarity, these handling devices are not shown in the drawing.
  • one and the same handling unit can be used, provided that the cycle time is sufficient and / or but two separate handling devices or more may be provided, if this is necessary to achieve the required Cycle time is required.
  • FIG. 2 illustrates the storage locations of the buffer 7 can also be adjusted parallel to the transport direction in the direction of the movement arrow 18 in order to simplify the handling operation or to facilitate the positioning of the semifinished product 1. Also, a vertical adjustment is possible, as indicated by the movement arrow 19 in FIG. 3 is illustrated. The corresponding movements can be generated by corresponding units in all illustrated embodiments.
  • the water cooling device 12 is preferably designed as a plate-shaped element, wherein this plate-shaped element has a size such that at least the first region of the deposited semi-finished product is completely covered.
  • a plate-shaped water cooling element is formed of steel, which is dyed black on its surface facing in the first region 4, in order to absorb the radiant heat particularly well.
  • the corresponding semifinished parts 1, in particular blanks can thus be formed with at least two structural areas of different ductility.
  • the temperature in the first sub-range, can be set such that a strength of 550 to 700, under certain circumstances even up to 900 N / mm 2 is achieved.
  • a martensitic microstructure is provided by appropriate temperatures, in the end result of this area after forming in the Press hardening tool may have a strength of 1350 to 1650 N / mm 2 .
  • two semi-finished parts 1 are always transported in pairs through the continuous furnace, the conveying speed is turned off so that in the 10 second rhythm at the end corresponding semifinished products can be removed by handling equipment, which are then transferred to corresponding buffer 7.
  • the elements each remain for 60 seconds.
  • a batch-wise charging of the press-hardening tool 6 can take place so that maximum application is possible without the continuous furnace 2 having to be clocked or slowed down in terms of its conveying speed.

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

Claims (16)

  1. Procédé pour produire une pièce moulée ayant au moins deux domaines de structure avec des ductilités différentes à partir d'un demi-produit (1), notamment une platine constituée d'acier durcissable par chauffage dans un four continu (2) et par un processus de trempe, le demi-produit (1) étant porté à la température d'austénitisation dans le four continu (2), un premier domaine partiel (4) du demi-produit (1) étant ensuite refroidi à une température à laquelle la structure du domaine partiel est transformée en structure ferrito-perlitique, tandis qu'un second domaine partiel (5) du demi-produit (1) est maintenu à la température d'austénitisation, le demi-produit (1) est ensuite transformé en pièce moulée et durci dans un outil d'emboutissage et de durcissement (6), caractérisé en ce que le demi-produit (1), après son passage dans le four continu (2), est inséré par le second domaine partiel (5) dans la chambre d'une réserve intermédiaire (7), notamment d'un four tampon (8), pour y être stocké, la réserve intermédiaire maintenant le second domaine partiel (5) à la température d'austénitisation, tandis que le premier domaine partiel (4) dépasse de la chambre de la réserve intermédiaire (7), notamment du four tampon (8) et que ce domaine en saillie est refroidi au contact de l'air ou avec de l'air à une température à laquelle se forme la structure ferrito-perlitique, le demi-produit (1) est ensuite retiré de la réserve intermédiaire (7), notamment du four tampon (8) et transmis à l'outil de presse et de durcissement (6) afin de le former et de le durcir.
  2. Procédé selon la revendication 1, caractérisé en ce que la réserve intermédiaire (7), notamment le four tampon (8) présente dans sa chambre de chauffe plusieurs zones de dépose pour plusieurs demi-produits (1), les demi-produits (1), lesquels sont prélevés successivement du four en continu (2) pouvant être respectivement déposés dans l'une des zones de dépose et transmis de façon cadencée, après un refroidissement partiel, à l'outil de presse et de durcissement (6).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que deux réserves intermédiaires (7), notamment deux fours tampons (8), sont positionnés de part et d'autre de la sortie du four continu (2) et chargés à tour de rôle de demi-produits (1) retirés du four en continu (2).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu, dans une zone qui surplombe le premier domaine partiel (4) du demi-produit (1), un refroidissement à l'eau (12), le flux d'air servant au refroidissement étant guidé dans la fente (13) entre le premier domaine partiel (4) du demi-produit (1) et le refroidissement à l'eau (12), en étant de façon privilégiée aspiré à travers cette fente (13).
  5. Procédé selon la revendication 4, caractérisé en ce que le refroidissement à l'eau (12) s'étend au-dessus de l'ensemble du demi-produit (1) qui forme le premier domaine partiel (4).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'une porte de four (11) est prévue à l'extrémité de défournement du four continu (2) au-dessus d'une zone du demi-produit (1), laquelle est configurée entre le premier et le second domaine partiel (4, 5), la largeur de la zone étant déterminée par l'épaisseur de la porte du four (11).
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la réserve intermédiaire (7) est réalisée par un élargissement (15) de la zone de défournement du four continu (2), les demi-produits (1) étant soulevés par le second domaine partiel (5) à l'intérieur de l'élargissement (15), du plan d'appui du four en continu (2) et transposés dans un ou plusieurs plans formés au dessus ou en dessous, tandis que les premiers domaines partiels (4) venant du four en continu (2) ou de l'élargissement (15) sont positionnés en saillie dans le sens du transport (3) du four en continu (2) et refroidis.
  8. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la réserve intermédiaire (7) présente des surfaces de contact (16, 17) ou des zones de contact avec des températures différentes, notamment d'une part une température d'austénitisation et d'autre part une température, à laquelle se forme la structure ferrito-perlitique, de sorte qu'il se forme dans le demi-produit (1) déposé dans celle-ci, des structures différentes correspondant aux domaines différents.
  9. Dispositif pour produire des pièces moulées ayant chacune deux domaines de structure avec des ductilités différentes à partir de demi-produits (1), notamment des platines constituées d'acier durcissable, comportant un four en continu avec un convoyeur à bande, à l'aide duquel le demi-produit (1) peut être transporté à travers le four en continu, ainsi qu'un outil de presse et de durcissement (6), grâce auquel le demi-produit (1) est durci et moulé en pièce moulée, caractérisé en ce qu'il est prévu au moins une réserve intermédiaire (7) ainsi qu'un appareil de manutention destiné à manipuler le demi-produit (1), à l'aide duquel les demi-produits (1) peuvent être soulevés à l'extrémité de défournement du four en continu (2) et déposés dans la réserve intermédiaire (7), laquelle réserve intermédiaire (7) comportant une première zone chauffée permettant de réceptionner et d'entreposer un second domaine partiel (5) du demi-produit (1), ainsi qu'une seconde zone refroidie afin de réceptionner le premier domaine partiel (4) du demi-produit (1), un appareil de manipulation ou l'appareil de manutention étant par ailleurs prévu à l'aide duquel les demi-produits (1) peuvent être prélevés de la réserve intermédiaire (7) et déposés dans l'outil de presse et de durcissement (6).
  10. Dispositif selon la revendication 9, caractérisé en ce que la réserve intermédiaire (7) présente plusieurs emplacements de dépose pour les demi-produits (1).
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que la réserve intermédiaire (7) et/ou les emplacements de dépose de la réserve intermédiaire (7) peut ou peuvent être réglés de façon parallèle au sens de transport (3) du convoyeur à bande et/ou perpendiculairement à celui-ci, et notamment de façon verticale.
  12. Dispositif selon l'une des revendications 9 à 11, caractérisé en ce que les emplacements de la réserve intermédiaire (7) présentent des zones de contact (16, 17) qui peuvent être chauffées ou refroidies, sur lesquelles un demi-produit (1) peut être déposé et réchauffé et/ou refroidi dans les zones correspondantes.
  13. Dispositif selon l'une des revendications 9 à 12, caractérisé en ce que la réserve intermédiaire (7) est un four tampon (8) dont l'entrée présente une porte de four (11), de sorte que le demi-produit (1) qui y est déposé en disposant le second domaine partiel (5) à l'intérieur du four tampon (8) et le premier domaine partiel (4) à l'extérieur de celui-ci, un dispositif de refroidissement étant disposé dans la zone où est placé le premier domaine partiel (4).
  14. Dispositif selon la revendication 13, caractérisé en ce que le dispositif de refroidissement est un refroidissement à l'air avec soufflerie.
  15. Dispositif selon la revendication 13 ou 14, caractérisé en ce que un élément de refroidissement à l'eau (12) en forme de plaque est disposé au-dessus d'une zone de dépose du premier domaine partiel (4) du demi-produit (1), une fente (13) formée entre ledit élément et le domaine partiel (4) du demi-produit (1) étant raccordée à un dispositif de refroidissement, notamment une soufflerie à air de refroidissement.
  16. Dispositif selon la revendication 15, caractérisé en ce que la surface de l'élément de refroidissement à l'eau (12) orientée vers le demi-produit (1) est teintée en noir.
EP10401175.4A 2010-03-04 2010-10-15 Procédé et dispositif pour produine une piece moulee ayant au moins deux domaines de structure avec des ductilites differentes Active EP2365100B8 (fr)

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DE102010010156A DE102010010156A1 (de) 2010-03-04 2010-03-04 Verfahren zur Herstellung eines Formteiles mit mindestens zwei Gefügebereichen unterschiedlicher Duktilität

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EP2365100A2 EP2365100A2 (fr) 2011-09-14
EP2365100A3 EP2365100A3 (fr) 2014-02-19
EP2365100B1 true EP2365100B1 (fr) 2016-05-18
EP2365100B8 EP2365100B8 (fr) 2016-09-21

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US (1) US8460484B2 (fr)
EP (1) EP2365100B8 (fr)
CN (1) CN102191362B (fr)
DE (2) DE102010010156A1 (fr)
ES (1) ES2587188T3 (fr)
HU (1) HUE029747T2 (fr)
PL (1) PL2365100T3 (fr)

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Also Published As

Publication number Publication date
CN102191362A (zh) 2011-09-21
DE102010010156A1 (de) 2011-09-08
US8460484B2 (en) 2013-06-11
EP2365100B8 (fr) 2016-09-21
EP2365100A3 (fr) 2014-02-19
DE202010018370U1 (de) 2016-01-28
CN102191362B (zh) 2015-08-19
US20110214786A1 (en) 2011-09-08
EP2365100A2 (fr) 2011-09-14
ES2587188T3 (es) 2016-10-21
HUE029747T2 (hu) 2017-04-28
PL2365100T3 (pl) 2016-11-30

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