EP3445886B1 - Procédé pour augmenter l'aptitude à la déformation plastique d'une pièce à l'aide d'un agent d'absorption - Google Patents

Procédé pour augmenter l'aptitude à la déformation plastique d'une pièce à l'aide d'un agent d'absorption Download PDF

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Publication number
EP3445886B1
EP3445886B1 EP17720414.6A EP17720414A EP3445886B1 EP 3445886 B1 EP3445886 B1 EP 3445886B1 EP 17720414 A EP17720414 A EP 17720414A EP 3445886 B1 EP3445886 B1 EP 3445886B1
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EP
European Patent Office
Prior art keywords
workpiece
absorbent
irradiation
station
absorption
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EP17720414.6A
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German (de)
English (en)
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EP3445886A1 (fr
Inventor
Thomas Reininger
Andreas Stranz
Christian Juricek
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Cosma Engineering Europe GmbH
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Cosma Engineering Europe GmbH
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Publication of EP3445886A1 publication Critical patent/EP3445886A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • 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
    • C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/12—Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0028—Microwave heating

Definitions

  • the present invention relates to a method for locally increasing the plastic deformability of a metal work piece, as well as an associated device and a corresponding use of a mixture for application to a metal work piece.
  • the EP 0996760 B1 proposes a method for improving the formability of aluminum sheets, in which a zone of a sheet to be bent is heated.
  • the heating takes place by means of an induction heating coil, the external shape and size of which is adapted to the areas of the sheet metal to be heated.
  • Immersion baths, laser heating or contact heating with a heated platen are mentioned as alternatives to an induction coil, but no detailed instructions are given for any of the alternative heating methods.
  • These proposed heaters must be adapted to the respective workpiece geometry and the respective regions to be heated of the workpiece can be adjusted individually. The energy consumed by the workpiece that leads to the heating is essentially dependent on the material to be heated.
  • the EP 0 992300 B1 discloses a forming process for precipitation-hardened aluminum alloys, in which certain regions of an aluminum sheet to be formed are heated in a targeted manner in order to increase their formability and to prevent material failure during forming. Specific measures to create or influence the temperature change in regions of the aluminum sheet are not discussed.
  • the U.S. 8,211,251 B2 discloses a method for completing precipitation hardening of a corresponding portion of an aluminum panel.
  • An example of an aluminum panel is the roof of a car.
  • a surface is heated there in areas by means of infrared radiation.
  • the surface can be provided with a surface coating, which increases the energy absorption of the surface.
  • the invention is based on the object of improving a method corresponding to the type mentioned at the outset in such a way that certain regions of a metallic workpiece can be heated more specifically and more quickly than others, with the aim of achieving faster and more intense heating with the same radiation power, while the The surface of the workpiece should be influenced as little as possible. Furthermore, an associated device is to be proposed.
  • this can be flexibly adapted to subsequent process steps, especially for forming the workpiece, so that if the deformability of the workpiece depends on the previous heating temperature, different areas of the workpiece have different deformabilities.
  • the absorbent can adhere to the workpiece at the location where it is applied while the workpiece is being exposed to the radiation. This enables precise positioning of the absorption means and, as a result, precise definition of the comparatively more heated regions of the workpiece. The regions that need to be heated more can be clearly distinguished from the other regions.
  • the absorbent can be kept relatively constant in its original position, even during vibrations or movements of the workpiece.
  • the absorbent can be applied to at least two sides of the metallic workpiece.
  • the radiation absorption of the workpiece can be further improved in order to ensure rapid and strong heating of the workpiece.
  • areas of the workpiece can be heated to a greater extent in a targeted manner on at least two sides of the workpiece.
  • the absorbent can have gray and/or black components.
  • the absorbent can have a high degree of absorption, in particular for visible light as well as heat and infrared radiation, which ensures good absorption of a large part of the radiation used for heating.
  • the absorbent can contain graphite.
  • Graphite is a cheap and easy-to-handle substance which, due to its color in particular, has a good degree of absorption, especially for visible light and infrared radiation.
  • the absorbent can at least partially evaporate after it has been applied to the workpiece, in particular before it is exposed to the radiation. This enables a division of tasks between the evaporating components of the absorbent and those components which remain on the workpiece after evaporation.
  • the evaporating component can improve the flowability or transportability of the absorbent, while the remaining, ie non-evaporating components, for example, adhere well to the material or can have a favorable degree of absorption.
  • the absorbent can conceivably have at least one liquid carrier medium and/or at least one solid, in particular powdered, absorption medium.
  • the different requirements placed on the absorbent such as conveyability, flowability, applicability, degree of absorption and adhesion, can be divided up in a favorable manner.
  • the carrier medium can be applied and conveyed particularly well, while the absorption medium can have a good degree of absorption and can adhere particularly well to the workpiece.
  • the absorption medium can be sprayed onto the workpiece, in particular by means of a nozzle.
  • the absorption medium can be applied to the workpiece evenly and comparatively extensively.
  • a nozzle is a cheap and easy-to-implement design for spraying on an absorbent.
  • the absorbent can be applied to the workpiece by means of at least one rolling body.
  • the absorbent can be applied specifically to the areas of the workpiece to be coated.
  • a cleaning agent which contains in particular liquid and/or gaseous components can be applied to the workpiece, with the absorbent being at least partially removed from the workpiece.
  • the workpiece can be prepared or used for further production steps, with the absorbent removed from the workpiece having little or no effect on these subsequent production steps.
  • a large proportion of the absorbent can be removed by using the cleaning agent.
  • part of the absorbent can be soluble in order to be able to transport it away from the surface of the workpiece in a favorable manner.
  • the cleaning agent can be sprayed onto the workpiece under pressure, in which case the workpiece can in particular be jet-cleaned. Due to the pressure, the cleaning agent can exert additional forces on the workpiece surface and the absorbent on it in order to better detach the absorbent from the workpiece surface and remove it to a large extent.
  • the principle of jet cleaning represents a particularly favorable technical implementation for removing the absorbent from the surface of the workpiece.
  • the absorbent after the radiation has been applied to the workpiece, can be at least partially stripped off the workpiece by means of at least one stripping body, in particular at least one stripping roller.
  • at least one stripping body in particular at least one stripping roller.
  • scraper rollers allows low friction between the surfaces of the workpiece in order to influence the surface of the workpiece as little as possible during scraping.
  • the object according to the invention is further achieved by a device according to independent claim 12.
  • the deformability of the workpiece can be increased by subjecting a metal workpiece to radiation.
  • the increase in plastic deformability as a result of the local heating of the workpiece can be improved with regard to the required radiation power, irradiation time and achievable temperature.
  • the coating station can have at least one nozzle which is suitable for spraying the absorbent onto a metal workpiece.
  • the absorbent can be applied to the workpiece evenly and over the entire area.
  • the coating station can have at least one rolling body to which the absorbent adheres, for example, and which can be suitable for applying the absorbent to a metal workpiece.
  • the absorbent can be positioned on the workpiece with precise location and in the desired layer thickness.
  • a cleaning station can be provided which is downstream of the irradiation station in the production process and is suitable for at least partially removing an absorbent from a metallic workpiece.
  • the absorbent can be removed from the metallic workpiece in order to prepare the workpiece for subsequent production steps, for example.
  • the cleaning station can have at least one scraper body, in particular at least one scraper roller.
  • the absorption medium can be conveniently wiped off the surface of the metallic workpiece by means of the scraping body in order to clean the metallic workpiece and the absorption medium after the irradiation possibly catch up again.
  • a scraper roller can roll over the workpiece and thus keep the friction that occurs and the influence on the surface properties of the workpiece low.
  • the cleaning station can have a cleaning nozzle which is suitable for spraying a cleaning agent under pressure onto the metallic workpiece and, in particular, for jet-cleaning the metallic workpiece.
  • a cleaning nozzle allows the absorbent to be thoroughly removed, particularly in the case of three-dimensional and complex shapes of workpieces.
  • the mixture used can act as an absorber and absorb a higher proportion of an applied radiation than the surface of the metallic workpiece, whereby the mixture heats up more than the surrounding uncovered surface of the workpiece and the absorbed energy is released in the form of heat at least locally to the workpiece.
  • This allows specific regions of the metallic workpiece to be heated in a targeted manner or to be heated more specifically than other regions of the metallic workpiece. Due to the increased absorption with the same irradiation time and radiation power, a higher final temperature of the workpiece can be achieved at least locally. With the same end temperature and the same radiant power, a shorter irradiation time is therefore necessary; analogously, a lower irradiation power is required for the same target temperature and irradiation duration.
  • the mixture can be well adapted to its task and associated subtasks.
  • the carrier medium can be applied and conveyed in a particularly favorable manner, while the absorption medium can have a particularly high degree of absorption or advantageous adhesive properties with the workpiece.
  • the absorption medium can have gray and/or black components.
  • the degree of absorption of the absorbent in particular for visible light and heat and infrared radiation, can advantageously be particularly high.
  • the absorption medium can contain graphite.
  • Graphite is an inexpensive substance that is easy to handle and has a high degree of absorption of radiation, in particular visible light as well as heat and infrared radiation.
  • the carrier medium can possibly at least partially evaporate in the ambient air.
  • the proportion of the carrier medium in the absorption medium on the surface of the workpiece can be advantageously reduced after the application of the absorption medium.
  • the influence of the carrier medium on the radiation absorption can be reduced and the Positioning and maintaining the positioning of the absorption medium on the surface of the workpiece can be improved.
  • the carrier medium can contain at least one hydrocarbon.
  • figure 1 shows a manufacturing device according to the invention with an irradiation station, which is designed in the form of an infrared oven 1, and a coating station 2, by means of which an absorbent can be applied to metallic workpieces 5.
  • an irradiation station which is designed in the form of an infrared oven 1
  • a coating station 2 by means of which an absorbent can be applied to metallic workpieces 5.
  • other ovens can be used instead of an infrared oven.
  • the metallic workpieces are thin, flat sheets made of a precipitation-hardenable aluminum alloy.
  • the manufacturing device has a cleaning station 3 by means of which an absorbent can be removed from metallic workpieces.
  • the production device also has a feed station 4, in which individual workpieces are removed from a first stack 6 and fed to the production device, and a stacking station 7, in which the individual workpieces are stacked on a second stack 8 after passing through the production device.
  • conveyors between and/or in the individual stations which are designed in the form of conveyor rollers 9 and transport the individual workpieces 5 from one station to the next and through the stations.
  • the workpieces could be conveyed from one station to the next using grippers, such as robotic grippers, or manually.
  • the conveyor rollers 9 can be designed as disk rollers. Especially when the side of the workpiece 5 which comes into contact with the rollers is also coated with an absorbent 10, disk rollers are suitable for maintaining the positioning of the absorbent as much as possible during transport.
  • the workpieces 5 are free of a surface coating for influencing the degree of absorption.
  • the locally applied absorbent 10 is locally limited on the workpieces 5. Where no absorbent 10 is applied to the surface of the workpiece 5, are Areas 11 of the workpiece free of the absorbent 10.
  • the figure 2 shows an alternative embodiment of a manufacturing device according to the invention, in which the cleaning station 3 is followed by an oiling station 12, by means of which the workpieces are subjected to an oil film after the absorbent 10 has been removed in order to prepare them for the subsequent forming processes.
  • the workpieces 5 are not stacked on a second stack after cleaning and oiling, but are conveyed directly into a press 13 in which the subsequent forming takes place.
  • the coating station 2 shown schematically has a nozzle 14 by means of which the absorbent 10 is sprayed locally onto the workpiece 5 .
  • the absorbent 10 is stored in a reservoir 15 and conducted to the nozzle 14 by means of a line 16 .
  • the cleaning station has two pairs of opposing scraper rollers 17 between which the workpiece 5 runs after being exposed to the radiation, so that the absorbent 5 is scraped off the workpiece 5 by contact with the scraper rollers 17 and is thus removed therefrom.
  • FIG. 3 shows a schematic representation of an exemplary embodiment of a cleaning station 3.
  • the metallic workpiece 5 is placed on a base 18.
  • the surface of the workpiece 5 is locally coated with an absorbent 10.
  • FIG. The cleaning station 3 has a cleaning nozzle 19 to which a cleaning agent 21 is fed from a cleaning agent reservoir 22 by means of a cleaning line 20 .
  • the cleaning agent 21 can be sprayed under pressure onto the workpiece 5 through the cleaning nozzle 19 so that jet cleaning of the surface of the workpiece 5 occurs.
  • the method according to the invention is particularly suitable for metallic materials in which the mechanical properties change as a result of heating. This is particularly the case with precipitation-hardenable aluminum alloys, which are formed, for example, with the alloying elements copper and magnesium.
  • the metallic material can be, for example, one of the aluminum alloys EN AW-5882, EN AW-6016 and EN AW-7021 or another alloy with a similar composition.
  • the workpiece is fed to a coating station in which the absorbent is applied specifically to those areas whose deformability is to be increased.
  • the workpiece pretreated in this way in the coating station is then exposed to radiation, which is partially absorbed on the surfaces of the pretreated workpiece.
  • This radiation can be, for example, thermal radiation or infrared radiation, with the irradiation station being an oven that is already known in practice, such as an infrared oven as in the first exemplary embodiment.
  • the temperatures reached at least in certain areas in the workpiece are favorably about 250°C to 500°C.
  • the temperature prevailing in the furnace is typically in the order of around 1000 °C.
  • the absorbent Due to the increased degree of absorption of the absorbent, it absorbs a larger proportion of the radiation impinging on the surface than the untreated surface of the workpiece. As a result, the absorbent heats up locally more than the other workpiece surfaces and reaches a higher temperature more quickly. Since the absorbent is in planar contact with the underlying surface of the workpiece, the rapid heating of the absorbent leads to a likewise more rapid increase in temperature of the underlying surface section of the workpiece that is in contact with the absorbent. This results in the desired effect that the areas of the workpiece that are coated with the absorbent reach a higher temperature faster than those areas of the workpiece that are not covered with the step, given the same radiation power.
  • Two-phase mixtures of a liquid carrier medium and a pulverulent absorption medium are particularly suitable as absorbents.
  • the primary task of the carrier medium can be to be flowable and conveyable, so that the absorbent can be applied evenly and comprehensively to the targeted locations of the workpiece in the coating station.
  • the absorbent should have the highest possible degree of absorption and should adhere well to the surface of the workpiece.
  • Graphite with a grain size of less than 10 ⁇ m, for example, is suitable as an absorption medium. Due to its black surface in particular, graphite has a high degree of absorption for visible light, heat and infrared radiation. Due to the grain size described, it can be applied in thin layers and at the same time cover the entire surface and adheres well to aluminum surfaces. In alternative embodiments, other black powders or materials with high absorptivity can also be used. These should be temperature-resistant so that they change little or not at all when they are applied to the workpiece and/or when they are exposed to the radiation, in particular they do not change their physical state as far as possible and hardly react chemically.
  • Liquid hydrocarbons or alcohols for example, which form a suspension with the absorbent, are suitable as the carrier medium, with the carrier medium being able to be applied to the workpiece in a flowable manner and the powdery absorbent suspended therein distributed on the surface.
  • the carrier medium can be selected in such a way that it evaporates quickly and as completely as possible in ambient air at ambient temperature, so that only the absorption medium remains on the surface of the workpiece after evaporation. This can prevent the absorption medium from continuing to flow on the surface of the workpiece, so that only the desired areas of the workpiece remain coated with the absorbent and are accordingly heated more than the other areas of the workpiece.
  • the carrier medium like the absorbent, should be temperature-resistant.
  • the absorbent is removed from the workpiece in a cleaning station.
  • this can be done by means of scraper rollers which come into contact with the workpiece so that the absorbent is scraped off the surface of the workpiece.
  • two pairs of opposing stripper rollers 17 are embodied, with the workpiece being guided through in each case between the two stripper rollers forming a pair and simultaneously coming into contact with the two stripper rollers.
  • FIG. 3 shown embodiment of a cleaning station is based on a different principle of action.
  • a cleaning agent 21 consisting of liquid and/or gaseous components is sprayed under pressure onto the surface of the workpiece 5 therein. As a result, the absorbent is dissolved and removed from the surface of the workpiece 5 .
  • figure 2 and 3 The principles shown schematically for removing the absorbent can also be combined or carried out one after the other in order to achieve a good cleaning result.
  • the figure 4 shows an alternative configuration of a coating station 2.
  • the workpiece 5 is guided in a direction of movement 27 between two rolling bodies 25, on the surface of which the absorbent is located in certain areas and which roll over the workpiece 5 in the direction of rotation 26.
  • the workpiece 5 is a metal sheet with two opposite plane-parallel surfaces with each of which a rolling body 25 is in contact.
  • the absorbent 10 adheres to the workpiece 5 and is thereby transferred from the rolling bodies 25 to the workpiece 5.
  • the operating principle of this arrangement is similar to the roll printing process known from printing technology. Instead of two opposing rolling bodies 25, a single rolling body can also be designed with a rigid counterhold, or only one rolling body can be provided with the absorbent so that it is only applied to one side of the workpiece. Instead of sheet metal, this process can also be used for differently shaped workpieces with more than two surfaces.
  • the figure 5 shows two graphs for measuring the temperature profile in the surface of an aluminum sheet in a radiant furnace, where it can be clearly seen that those surface areas which are coated with an absorbent reach a higher temperature much faster than those surface areas which are not coated with an abrasive agent . Both surfaces are exposed to the same radiation power. From the diagram it can be seen that with the same radiation duration of 12 seconds, the surfaces with an absorbent reach a final temperature of 300 °C, three times as high as those surfaces without absorbent, which only reach 100 °C. Similarly, it can be seen that the end temperature of 100 °C of the areas without absorbent is reached after 6 seconds, while the areas with an absorbent reach this temperature already after 2 seconds and thus only in a third of the time.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Claims (17)

  1. Procédé permettant d'augmenter localement la déformabilité plastique d'une pièce métallique (5) présentant un alliage d'aluminium, dans lequel la pièce (5) est exposée à un rayonnement pendant la traversée d'un four (1) afin d'augmenter la température de la pièce (5), dans lequel le procédé comprend les étapes ci-dessous :
    - un agent d'absorption (10) est appliqué localement sur la pièce (5) avant l'exposition de la pièce (5) au rayonnement,
    dans lequel le degré d'absorption de l'agent d'absorption (10) vis-à-vis du rayonnement est supérieur au degré d'absorption de la pièce (5) vis-à-vis du rayonnement,
    dans lequel, en raison du degré supérieur d'absorption de l'agent d'absorption, une plus grande partie de l'énergie de rayonnement incidente est absorbée par l'agent d'absorption par rapport à la surface de la pièce (5) sur laquelle il n'y a pas d'agent d'absorption, de sorte que la déformabilité plastique est augmentée localement aux endroits où l'agent d'absorption est appliqué,
    - la pièce traverse le four (1) de sorte que, pour une même durée d'irradiation et une même puissance d'irradiation, la température atteinte aux endroits de la pièce (5) recouverts par l'agent d'absorption (10) est plus élevée qu'aux endroits de la pièce qui ne sont pas recouverts par l'agent d'absorption (10).
  2. Procédé selon la revendication 1, caractérisé en ce que, pendant l'exposition de la pièce au rayonnement, l'agent d'absorption (10) adhère sur la pièce (5) à l'endroit où il est appliqué.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agent d'absorption présente des composants gris et/ou noirs, et/ou dans lequel l'agent d'absorption présente du graphite.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agent d'absorption (10) est pulvérulent.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agent d'absorption (10) est pulvérisé sur la pièce au moyen d'une buse (14).
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'agent d'absorption (10) est appliqué sur la pièce (5) au moyen d'au moins un corps d'étalement (25), et dans lequel la pièce est guidée de manière à passer entre au moins une paire de corps de raclage se faisant face.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agent d'absorption (10) est au moins partiellement retiré de la pièce (5) par raclage au moyen d'au moins un rouleau racleur (17) après l'exposition de la pièce (5) au rayonnement, et dans lequel un agent de nettoyage (21) contenant en particulier des composants liquides et/ou gazeux est appliqué sur la pièce (5) après l'exposition de la pièce au rayonnement, dans lequel l'agent d'absorption (10) est au moins partiellement éliminé de la pièce (5), et en ce que l'agent de nettoyage (21) est pulvérisé sous pression sur la pièce (5), dans lequel la pièce est nettoyée au jet.
  8. Procédé selon la revendication 1, dans lequel au moins un des endroits de la pièce sur lesquels l'agent d'absorption (10) est appliqué est déformé après l'irradiation.
  9. Procédé selon la revendication 1, dans lequel l'agent d'absorption (10) contient au moins un milieu porteur liquide.
  10. Procédé selon la revendication 1, dans lequel l'agent d'absorption est appliqué sur au moins deux côtés de la pièce métallique (5).
  11. Procédé selon la revendication 1, dans lequel l'agent d'absorption (10) est appliqué sur une première région de la pièce (5) avant l'irradiation et l'agent d'absorption n'est pas appliqué sur une seconde région de la pièce.
  12. Dispositif de fabrication permettant d'augmenter localement la déformabilité plastique d'une pièce métallique (5) configurée pour la mise en oeuvre d'un procédé selon l'une quelconque des revendications précédentes,
    dans lequel le dispositif de fabrication présente un poste d'irradiation (1) sous la forme d'un four (1) configuré pour que la pièce le traverse et configuré pour que, pour une même durée d'irradiation et une même puissance d'irradiation, une température atteinte au niveau des régions de la pièce (5) recouvertes d'agent d'absorption (10) soit plus élevée qu'au niveau des régions de la pièce non recouvertes d'agent d'absorption (10), et
    dans lequel le dispositif de fabrication présente un poste de revêtement (2) situé en amont du poste d'irradiation dans le déroulement de la fabrication et configuré pour appliquer l'agent d'absorption (10) localement sur la pièce (5),
    dans lequel le degré d'absorption de l'agent d'absorption (10) vis-à-vis du rayonnement est supérieur au degré d'absorption de la pièce (5) vis-à-vis du rayonnement, dans lequel, en raison du degré supérieur d'absorption de l'agent d'absorption, une plus grande partie de l'énergie de rayonnement incidente est absorbée par l'agent d'absorption par rapport à la surface de la pièce (5) sur laquelle il n'y a pas d'agent d'absorption, de sorte que la déformabilité plastique est augmentée localement aux endroits où l'agent d'absorption est appliqué.
  13. Dispositif de fabrication selon la revendication 12, caractérisé en ce que le poste de revêtement (2) présente au moins une buse (14) appropriée pour pulvériser l'agent d'absorption (10) sur une pièce métallique (5).
  14. Dispositif de fabrication selon la revendication 12 ou 13, caractérisé en ce que le poste de revêtement (2) présente au moins un corps d'étalement (25) auquel adhère l'agent d'absorption (10) et qui est approprié pour appliquer l'agent d'absorption (10) sur une pièce métallique (5).
  15. Dispositif de fabrication selon l'une quelconque des revendications 12 à 14, caractérisé par un poste de nettoyage (3) situé en aval du poste d'irradiation (1) dans le déroulement de la fabrication et approprié pour éliminer au moins partiellement un agent d'absorption (5) d'une pièce métallique (5).
  16. Dispositif de fabrication selon la revendication 15, caractérisé en ce que le poste de nettoyage (3) présente au moins un corps de raclage, dans lequel le au moins un corps de raclage présente au moins un rouleau racleur (17).
  17. Dispositif de fabrication selon la revendication 15 ou 16, caractérisé en ce que le poste de nettoyage (3) présente une buse de nettoyage (19) appropriée pour pulvériser sous pression un agent de nettoyage (21) sur la pièce métallique (5) et pour nettoyer la pièce métallique (5) au jet.
EP17720414.6A 2016-04-22 2017-04-21 Procédé pour augmenter l'aptitude à la déformation plastique d'une pièce à l'aide d'un agent d'absorption Active EP3445886B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016206899.7A DE102016206899A1 (de) 2016-04-22 2016-04-22 Verfahren zum Erhöhen der plastischen Verformbarkeit eines Werkstückes mit einem Absorptionsmittel
PCT/EP2017/059517 WO2017182629A1 (fr) 2016-04-22 2017-04-21 Procédé pour augmenter l'aptitude à la déformation plastique d'une pièce à l'aide d'un agent d'absorption

Publications (2)

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EP3445886A1 EP3445886A1 (fr) 2019-02-27
EP3445886B1 true EP3445886B1 (fr) 2022-08-10

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EP17720414.6A Active EP3445886B1 (fr) 2016-04-22 2017-04-21 Procédé pour augmenter l'aptitude à la déformation plastique d'une pièce à l'aide d'un agent d'absorption

Country Status (6)

Country Link
US (1) US11400507B2 (fr)
EP (1) EP3445886B1 (fr)
CN (1) CN109477193A (fr)
CA (1) CA3021723A1 (fr)
DE (1) DE102016206899A1 (fr)
WO (1) WO2017182629A1 (fr)

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Publication number Publication date
EP3445886A1 (fr) 2019-02-27
CN109477193A (zh) 2019-03-15
WO2017182629A1 (fr) 2017-10-26
US11400507B2 (en) 2022-08-02
CA3021723A1 (fr) 2017-10-26
US20190134692A1 (en) 2019-05-09
DE102016206899A1 (de) 2017-10-26

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