EP2554288B1 - Method and tool for thermal treatment of aluminium sheet material and aluminium sheet material thermally treated using such a method - Google Patents

Method and tool for thermal treatment of aluminium sheet material and aluminium sheet material thermally treated using such a method Download PDF

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Publication number
EP2554288B1
EP2554288B1 EP12178269.2A EP12178269A EP2554288B1 EP 2554288 B1 EP2554288 B1 EP 2554288B1 EP 12178269 A EP12178269 A EP 12178269A EP 2554288 B1 EP2554288 B1 EP 2554288B1
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EP
European Patent Office
Prior art keywords
cooling
quenching
tool
temperature
sheet material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP12178269.2A
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German (de)
English (en)
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EP2554288A1 (fr
Inventor
Michael Lechner
Marion Merklein
Andreas Kuppert
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Friedrich Alexander Univeritaet Erlangen Nuernberg FAU
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Friedrich Alexander Univeritaet Erlangen Nuernberg FAU
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    • 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
    • C22F1/05—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 of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
    • 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
    • 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
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • 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
    • 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
    • C22F1/053—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 of alloys with zinc as the next major constituent
    • 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
    • C21D2221/00—Treating localised areas of an article

Definitions

  • the invention relates to a method for heat treatment of aluminum sheet material.
  • Aluminum sheet materials are known in various alloy compositions as a lightweight material by obvious prior use. Curing aluminum alloys are known which have silicon and magnesium as the main alloying elements. Other alloying elements can be included. Such aluminum alloys are grouped according to an international standard in a class called AA6xxx. Such AlMgSi alloys have a comparatively high formability, since the alloying elements silicon and magnesium are present in the production of the aluminum sheet material not in dissolved form but as a supersaturated mixed crystal. This material state is unstable in time, ie after the sheet metal production begins a spontaneous cold aging process, whereby the strength of the material increases and its formability is reduced. Alternatively, the aluminum sheet material may also be subjected to a thermal aging process.
  • precipitation-hardenable aluminum alloys with the main alloying elements zinc and magnesium exist. These can be stored analogously cold and warm and are summarized under the name 7xxx. From the textbook " Continuous time-temperature precipitation diagrams of Al-Mg-Si alloys "by Milkereit, Shaker Verlag, 2011 It is known that quenching at a quench rate following solution heat treatment of the aluminum alloy results in hardness of the material heat treated in this way. As the cooling rate decreases, the hardness and strength of the sheet material decreases.
  • the JP 2010-018 850 A discloses a heat treatment process of aluminum sheet material which is first heated and then quenched with fluid in one area and air cooled in another area.
  • the JP 2009-161 851 A discloses a local heat treatment of aluminum sheet material wherein certain areas of the aluminum sheet material are heated and other areas are not heated.
  • Locally confined areas of a blank of the aluminum sheet material are heated to effect localized softening of the material.
  • Later to be reshaped areas of the board are softened to facilitate a flow of material from these areas, while reducing the required forming forces. Areas of the board that have a force-transmitting function during forming are not softened.
  • a subsequent forming process of the so-heat-treated board can be done in a cold state such as at room temperature.
  • the methods mentioned require complex heat treatment strategies and tools such as laser beam sources, whereby a local heating of the sheet material must be ensured.
  • the invention is therefore based on the object to provide a method for heat treatment of aluminum sheet material such that an adjustment of locally tailored material properties of the aluminum sheet material is facilitated.
  • the core of the present invention is that the material properties of aluminum sheet material are locally adjustable differently by different cooling processes are locally applied differently on the aluminum sheet material.
  • Various cooling processes are understood to mean that the cooling operations are carried out at different cooling rates, ie that the cooling of the aluminum sheet material is forced locally at different speeds.
  • the aluminum sheet material is available as an aluminum plate, since the temperature control is possible both during heating and during cooling with higher accuracy.
  • the aluminum sheet material is first heated to a temperature equal to or higher than a heating temperature.
  • This heating step is also referred to as solution annealing.
  • the heating temperature may vary.
  • the heating temperature for solution annealing may be in the range between 480 ° C and 540 ° C.
  • the temperature is maintained at a temperature level equal to or higher than the heating temperature during a heating period, which may be about one hour, for example.
  • the solution annealing time is about 20 minutes.
  • the maintenance of the heating time ensures a release of the alloy components to a sufficient extent.
  • a quenching of at least one quenching region of the aluminum sheet material takes place.
  • the temperature of the aluminum board is lowered from the heating temperature to a temperature less than or equal to a quenching temperature.
  • the quenching takes place within a quenching time, which may be, for example, more than 100 K / s, in particular more than 160 K / s.
  • the aluminum sheet material has, for example, a comparatively high yield strength and a high tensile strength. Furthermore, a cooling of at least one cooling region of the aluminum sheet material to a temperature less than or equal to a cooling temperature, which may be, for example, the ambient temperature.
  • the ambient temperature may be, for example, room temperature.
  • the cooling takes place within a cooling period, wherein the cooling time is greater than the quenching time. This means that at least one cooling zone is cooled at a lower cooling rate than quenching at least one quench zone.
  • the quench area and the cooling area may be adjacent but geometrically separated from each other. The two areas do not overlap. As a result, the quench area and the cooling area have different mechanical properties from each other.
  • a difference of the adjusted material properties in the quenching area and in the cooling area is qualitatively temporally stable. This means that, despite a spontaneous onset of cold aging, a differential amount of the mechanical properties generated as a result of the heat treatment remains essentially approximately unchanged.
  • a downstream forming process in particular temporally and spatially, can be decoupled from the heat treatment of the aluminum sheet material.
  • the method of heat treatment according to the present invention enables the production of aluminum sheet material with locally tailored, high-quality time material properties. In particular, it is possible to adjust the material properties directly during the production of the aluminum sheet material.
  • a downstream heat treatment which is carried out in the methods of the prior art by an additional local heating of prefabricated boards, is not required in the present process. It is also possible to use the method according to the invention for an already produced, in particular hardened, aluminum plate, for example in a sheet metal processing plant, such as automobile or aircraft manufacturer or their suppliers.
  • the aluminum plate it is possible to provide a plurality of cooling regions and / or a plurality of quenching regions on the aluminum plate.
  • Essential for the adjustment of the material properties is the quench rate, d. H. one cooling per time.
  • quenching is feasible with high reliability.
  • accidental quenching of the cooling region can be avoided since the at least one cooling region is shielded by means of a tool.
  • quench medium undesirably comes into contact with the tool during quenching, this results in cooling of the tool, with cooling being delayed as compared to quenching.
  • the contact of the quenching medium with the tool it will cool down faster in the edge areas. The result is a heat transfer area, which is reflected in the strength distribution.
  • the quenching rate and thus the quenching time can be adjusted.
  • the heat dissipation from the at least one quench area of the aluminum board is increased by a quench medium against cooling in air.
  • Water is particularly suitable as a quenching medium and in particular available in many places.
  • the quenching is carried out by deliberately supplying the quenching medium in the quenching area. It is also possible to use other quenching media, especially oil or gaseous quenching media such as N 2 or CO 2 .
  • the cooling of at least one cooling zone takes place in air.
  • Such a cooling process can be implemented with little equipment.
  • the cooling can be additionally delayed by the fact that the cooling area is covered by steel plates.
  • the steel plates act as a heat storage, so that a slower heat output from the cooling area on the steel plates to the environment results.
  • the procedure and the implementation are additionally simplified.
  • the handling of the aluminum sheet material is simplified.
  • a method according to claim 5 enables a targeted design of an aluminum plate to be produced with locally tailored material properties.
  • a numerical calculation method it is possible to calculate both required mechanical properties as well as their arrangement and extent on the board for subsequent shaping of the board. Based on the distribution of the mechanical properties thus calculated, cooling ranges and quenching ranges for the heat treatment can be set.
  • Aluminum sheet material may be heat treated by the method described above.
  • Such a heat-treated sheet metal material has in particular qualitatively time-stable mechanical properties.
  • a time interval within which a difference of the mechanical Properties between the at least one quench zone and the at least one cooling zone is stable is in particular more than 50 hours, in particular more than 150 hours and in particular more than 1000 hours.
  • the sheet material at a first location such as in a sheet metal manufacturing operation and to undergo a corresponding heat treatment and then to transport at a further location such as a further processing operation, in particular for sheet metal forming at a car manufacturer, with a difference of the mechanical properties are not changed within a permissible, predefined time interval between sheet metal production and further processing.
  • a further location such as a further processing operation, in particular for sheet metal forming at a car manufacturer
  • a tool may be made in two parts and comprise two mold halves that can be connected to one another, wherein at least one of the tool halves has an opening such that a quench area of the aluminum plate is accessible from outside the tool.
  • This tool half is designed like a mask.
  • the opening may for example be designed as a recess in the form of a bore of the mold half. It is also possible that the opening is made in the edge region of the mold half.
  • a plurality of mutually different openings are provided for producing a plurality of quench areas of the aluminum plate. This makes it possible to purposefully quench the quenching areas of the aluminum plate through the openings, optionally separately, with a quenching medium.
  • the remaining, inaccessible areas of the aluminum plate thus represent the cooling areas that are protected by the tool from being quenched by the quench medium.
  • the thickness of the tool can be varied locally and thus the cooling rates can be customized. The same effect can be achieved by using locally different materials, such as copper instead of steel.
  • the tool according to the invention is easy to manufacture and allows direct and uncomplicated performance of a locally tailored deterrent process.
  • a tool with plate-shaped mold halves, which are made in particular of steel, is straightforward and in particular cost-reduced to produce.
  • steel is easy to process and thus simplifies the manufacture of the tool itself.
  • steel is well suited to deliver the heat absorbed during the heating in the manufacture of the aluminum board in the cooling areas continuously and delayed with respect to the quenching areas.
  • Steel plates as tool halves can act as a buffer for heat dissipation. A softening in the cooling areas is additionally secured. Unintentional quenching of the cooling areas can be avoided. It is also possible to use other tool materials.
  • the two tool halves 2, 3 are substantially identical and each have one of the other tool half 2, 3 facing tool inside 4 and one on the respective mold half 2, 3 of the tool inside 4 opposite tool outside 5 on.
  • the upper and lower mold halves 2, 3 each have an aligned opening 6, which allow a passage from the tool outer side 5 to the tool inner side 4.
  • the openings 6 have a circular basic shape in a plane oriented parallel to the tool sides 4, 5. It is also possible that the openings 6 are made with a different basic shape.
  • the openings 6 have a longitudinal axis 7, which is oriented perpendicular to the tool sides 4, 5 according to the embodiment shown. It is possible that in the tool 1 more, in particular independent openings are provided.
  • the openings can, as in Fig. 1 shown, having a basic shape with a closed contour, so be disposed within the respective mold half 2, 3. It is also possible that one or more openings are arranged in an edge region of the respective tool half 2, 3.
  • the tool halves 2, 3 are plate-shaped and made of steel, especially made of stainless steel.
  • a plurality of screws may be provided, for example in corner regions of the rectangular, in particular square, base of the tool halves 2, 3.
  • connection for the two mold halves 2, 3 conceivable.
  • the aluminum plate 8 is arranged between the two mold halves 2, 3 between the two mold halves 2, 3, an aluminum plate 8 is arranged.
  • the aluminum plate 8 is in each case on the tool inside 4 of the tool halves 2, 3 at.
  • the aluminum plate 8 is a sheet metal blank made of an aluminum alloy, in particular of a hardenable aluminum alloy, such as an AlZnMg (Cu) alloy or AlMgSi alloy, in particular AA6014, AA6016 or AA6181.
  • the aluminum plate 8 has a circular base. Depending on the intended further processing, the blank is selected accordingly.
  • the blank of the board 8 shown can be used for the production of a cylindrical cup.
  • the openings 6 in the mold halves 2, 3 arranged in the tool 1 aluminum plate 8 from outside the tool 1 is accessible.
  • the openings 6 are surrounded by a shielding section 9 of the tool halves 2, 3.
  • the shielding section 9 serves during a quenching of the arranged in the tool 1 aluminum plate 8 for shielding arranged underneath portions of the aluminum plate 8, which will be explained in more detail below.
  • the shielding portion 9 is used for controlled and delayed heat release from the aluminum plate 8 on the tool halves 2, 3 to the environment.
  • the tool halves 2, 3 may have, in a protruding beyond the aluminum plate 8 edge region a collar, not shown, which protrudes beyond the respective tool inner side 4, so that a gap between the two mold halves 2, 3 is closed. This avoids that heat is released via the end faces of the aluminum plate 8 during cooling of the tool 1 with the aluminum plate 8 disposed therein.
  • the aluminum plate 8 is accessible from both sides on the outside.
  • the heat treatment of thick sheet metal with a sheet thickness of, for example, greater than or equal to 2 mm is thus ensured that the material properties are distributed homogeneously along the sheet thickness.
  • An only one-sided opening 6 in one of the two mold halves 2, 3 is also conceivable.
  • Fig. 2 shows a schematic representation of an aluminum plate 8, which in the tool 1 according to Fig. 1 has been heat treated.
  • the aluminum plate 8 comprises a centrically arranged circular deterrent area, which is shown hatched, and a cooling area 11 surrounding the deterrent area 10.
  • the aluminum board 8 in the quench area 10 has an increased yield strength R p0.2 .
  • the relationship shown - ie increased mechanical characteristics within the quench zone 10 and compared to reduced mechanical characteristics in the surrounding cooling zone 11 - for example, for the tensile strength R m or the hardness of the material.
  • a difference ⁇ W between the material properties in the quench zone 10 and in the cooling zone 11 is at least 25% of the respective mechanical material property of the quench zone 11 and in particular up to 50% of the respective mechanical material property of the quench zone 11. This applies in particular to the aluminum alloys AA6016 T4 or AA6181.
  • the yield strength R p0 , 2 along the profile of the aluminum plate 8 has no exactly stepped course. At the edges of the regions 10, 11 a transition region is given in each case.
  • the aluminum plate 8 is provided. This can be, for example, a substantially untreated aluminum plate in semifinished production, for example, in a sheet metal forming operation. It is also possible for an already manufactured and delivered aluminum plate to be subjected to the method explained below.
  • the provided aluminum plate 8 is inserted into the tool 1. Subsequently, the tool 1 is closed and the two tool halves 2, 3 connected to each other, so that the aluminum plate 8 between the two mold halves 2, 3 is securely held.
  • the tool 9 For the subsequent heat treatment and in particular for a final cooling of the tool 1 and the aluminum plate 8 therein, it may be advantageous to design the tool 9 such that contact pressure between the respective tool half 2, 3 and the aluminum plate 8 is adjustable.
  • a hydraulic closing unit of the tool 1 wherein pressure sensors can be integrated in the tool halves 2, 3 such that a respective contact pressure can be determined.
  • Via a central machine control which is in signal communication with the hydraulic closing unit and / or the pressure sensors in the tool halves 2, 3, a contact pressure during the heat treatment and in particular during the heating and / or the subsequent cooling can be monitored and regulated.
  • the aluminum plate 8 is heated from an ambient temperature T u together with the tool 1 to a temperature T which is greater than or equal to a heating temperature T er .
  • the heating or heating for example, take place in a furnace, not shown.
  • Such a heating strategy is straightforward and inexpensive to implement.
  • the aluminum alloy according to the illustrated embodiment is AA6016 and is in a cold-cured state.
  • the heating time is t he one hour.
  • the alloy components are dissolved in the aluminum base material. This process step is also referred to as solution annealing.
  • the tool 1 with the aluminum plate 8 inserted therein is removed from the oven and the quenching area 10 of the aluminum plate 8 is quenched.
  • the water has a temperature lower than the ambient temperature T u before quenching.
  • the quenching portion 10 of the aluminum board 8 is quenched to a temperature lower than or equal to a quenching temperature T schr .
  • the quenching temperature T schr is, for example, the ambient temperature T u of about 20 ° C.
  • the quenching takes place within a quenching time t schr , which is a few seconds, in particular less than one second.
  • Essential for the adjustment of the mechanical properties in the quench zone 10 is the cooling rate, which is also referred to as the quench rate. In the embodiment shown, the cooling rate is 161 K / s.
  • the temperature control during quenching within the quench zone 10 is shown in the schematic diagram in FIG Fig. 4 represented by the solid line AS 10.
  • the temperature profile of the aluminum board 8 in the cooling zone 11 is in terms of heating and maintaining the temperature during the heating time t he identical with the temperature-time profile within the quenching region 10. Since the cooling region 11 by the shielding portion 9 of the upper mold half 2 is shielded, the cooling area 11 does not come into direct contact with the quenching medium water. Correspondingly, the cooling region 11 cools with a cooling rate of, for example, 0.8 K / s, which is reduced compared to the quenching region 10. This cooling rate results from the cooling of the steel plates 2, 3 by free convection to the environment. The cooling is considered complete when the cooling region 11 of the aluminum plate 8 has dropped to a temperature less than or equal to a cooling temperature T k .
  • the cooling temperature T k may be, for example, the ambient temperature T u .
  • the cooling takes place within a cooling time t k .
  • the cooling time is greater than the quenching time t schr .
  • the outer areas of the board are usually cooled slowly for 10-15 minutes. Once a temperature of about 200 ° C is reached, a slow cooling is no longer necessary. Then the entire tool can be quenched to room temperature with water.
  • the cooling curve of the cooling area 11 is in Fig. 4 represented by a dash-dot line AK11.
  • Fig. 5 shows a schematic representation of the yield strength R p0 , 2 within the quench zone 10 and the cooling zone 11 for the in Fig. 2
  • the yield point R p0 , 2 is shown as a function of a storage period t L of the aluminum plate 8.
  • the regions 10, 11 have the yield strength R p0.2 , which in Fig. 3 are shown.
  • a spontaneous cold aging process takes place, which leads to a hardening of the regions 10, 11.
  • the entire board 8 ie the quench zone 10 and the cooling zone 11 are equally heated and solution-annealed, the subsequent cold aging takes place concurrently, ie a difference ⁇ W between the yield point R p0 , 2 for the quench zone 10 and the Cooling area 11 does not change as the storage time t L progresses. That is, the absolute solidification is the same in both areas 10, 11.
  • this makes it possible to carry out a sheet metal processing, for example by forming with a greater time delay compared to an upstream heat treatment, wherein the material properties and in particular the differences in material properties between the softened Abkühlungs Scheme and the quenching remain.
  • This is a significant advantage over the known from the prior art method of local heat treatment for softening localized material areas.
  • the locally softened areas are subject to a spontaneous cold aging, since only these areas were locally heat treated.
  • cold work hardening in the case of a locally heat-treated board successively leads to a change in the ratios of the material properties.
  • a difference between the material properties of the softened, heat treated area and the base material is variable with increasing storage time t L.
  • the board After heat treatment and forming, the board can be stored in a warm condition.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Claims (5)

  1. Procédé de traitement thermique d'une matière première en tôle d'aluminium, comprenant les étapes de procédé
    - de mise à disposition de la matière première en tôle d'aluminium (8),
    - de chauffage de la matière première en tôle d'aluminium (8) à une température (T) supérieure ou égale à une température de chauffage (Tch),
    - maintien de la température (T) pendant un temps de chauffage (tch),
    - trempe d'au moins une zone à tremper (10) de la matière première en tôle d'aluminium (8) à une température (T) inférieure ou égale à une température de trempe (Ttr), où la trempe est effectuée pendant un temps de trempe (ttr),
    - refroidissement d'au moins une zone à refroidir (11) de la matière première en tôle d'aluminium (8) à une température (T) inférieure ou égale à une température de refroidissement (Tre), notamment, à la température ambiante (Ta), le refroidissement étant effectué pendant un temps de refroidissement (tre), qui est supérieur au temps de la trempe (ttr),
    caractérisé par une protection de la zone à refroidir (11) pendant la trempe au moyen d'un outil (1).
  2. Procédé selon la revendication 1, caractérisé en ce que la trempe est réalisée par la soumission de la zone à tremper (10) à un milieu de trempe, notamment de l'eau.
  3. Procédé selon l'une des revendications précédentes, caractérisé par le fait que le refroidissement est effectué à l'air, notamment par convexion libre.
  4. procédé selon l'une des revendications précédentes, caractérisé en ce que la matière première en tôle d'aluminium (8) est disposée dans l'outil (1) avant le chauffage et est réchauffée ensemble avec l'outil (1).
  5. Procédé selon l'une des revendications précédentes, caractérisé par le fait qu'une détermination de la zone à refroidir (11) et de la zone à tremper (10) est effectuée au moyen d'un procédé de calcul numérique.
EP12178269.2A 2011-08-05 2012-07-27 Method and tool for thermal treatment of aluminium sheet material and aluminium sheet material thermally treated using such a method Not-in-force EP2554288B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110080528 DE102011080528B3 (de) 2011-08-05 2011-08-05 Verfahren und Werkzeug zur Wärmebehandlung von Aluminiumblechwerkstoff sowie nach einem derartigen Verfahren wärmebehandelter Aluminiumblechwerkstoff

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EP2554288A1 EP2554288A1 (fr) 2013-02-06
EP2554288B1 true EP2554288B1 (fr) 2015-09-23

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WO2018011069A1 (fr) 2016-07-13 2018-01-18 Constellium Neuf-Brisach Ébauches en alliage d'aluminium avec recuit éclair local

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DE102016214147A1 (de) * 2016-08-01 2018-02-01 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zur Wärmebehandlung
DE102017117675B4 (de) * 2017-08-03 2022-07-28 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines Kraftfahrzeugbauteils aus einer 6000er Aluminiumlegierung
DE102020206441A1 (de) 2020-05-25 2021-11-25 Mahle International Gmbh Verfahren zur Herstellung einer mehrteiligen Kühlplatte

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JP5435914B2 (ja) * 2007-12-11 2014-03-05 株式会社Ｕａｃｊ 冷間プレス成形用アルミニウム合金板の製造方法、アルミニウム合金板の冷間プレス成形方法、およびアルミニウム合金冷間プレス成形品
JP5279119B2 (ja) * 2008-07-10 2013-09-04 アイシン軽金属株式会社 部分改質アルミニウム合金部材及びその製造方法
US8211251B2 (en) * 2009-08-14 2012-07-03 GM Global Technology Operations LLC Local heat treatment of aluminum panels

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CN106885474A (zh) * 2015-12-15 2017-06-23 本特勒尔汽车技术有限公司 调温站以及用于运行调温站的方法
WO2018011069A1 (fr) 2016-07-13 2018-01-18 Constellium Neuf-Brisach Ébauches en alliage d'aluminium avec recuit éclair local

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