EP1059363B1 - Méthode pour un procédé intégré de traitement thermique - Google Patents

Méthode pour un procédé intégré de traitement thermique Download PDF

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Publication number
EP1059363B1
EP1059363B1 EP00112192A EP00112192A EP1059363B1 EP 1059363 B1 EP1059363 B1 EP 1059363B1 EP 00112192 A EP00112192 A EP 00112192A EP 00112192 A EP00112192 A EP 00112192A EP 1059363 B1 EP1059363 B1 EP 1059363B1
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EP
European Patent Office
Prior art keywords
heat treatment
sheet
aluminum strip
aluminum
cold forming
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.)
Expired - Lifetime
Application number
EP00112192A
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German (de)
English (en)
Other versions
EP1059363A1 (fr
EP1059363B2 (fr
Inventor
Gerhardt Dipl.-Ing. Söllner
Peter Dr. Von Czamowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydro Aluminium Deutschland GmbH
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Hydro Aluminium Deutschland GmbH
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Publication date
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Application filed by Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Publication of EP1059363A1 publication Critical patent/EP1059363A1/fr
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Publication of EP1059363B2 publication Critical patent/EP1059363B2/fr
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Classifications

    • 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
    • C22F1/057—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 copper as the next major constituent
    • 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
    • C22F1/047—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 magnesium as the next major constituent
    • 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

Definitions

  • the invention relates to a method for producing cold-formed components from a hardenable Aluminum material, in which a process integrated Heat treatment is carried out.
  • curable Aluminum materials such as Al-Mg-Cu, Al-Mg-Si, Al-Zn-Mg, Al-Cu-Mg or comparable alloys are preferred for Manufacture of cold-formed, especially deep-drawn Components used. Alloys that can be hardened with regard to the strengths achievable by the influence of heat special advantages. For example, in the area automotive components such as bonnets, doors etc., proven, that of an Al-Cu-Mg or Al-Mg-Si alloy have been produced. The firmness of these Components made of alloys can be, for example due to the effect when a stove enamel is applied Increase heat ("bake hardening").
  • Such a method is, for example, in German Published patent application DE 196 19 034 A1.
  • Heat treatment is preferably by means of an inductive one working heating device performed. With a such facility can be large in a relatively short time Apply heat to the material to be annealed.
  • the production of the aluminum strip explained takes place in the Usually held in a rolling mill.
  • the processor from which Aluminum material by cold forming the component to be manufactured is manufactured obtains aluminum strips or - from the rolling mill sheets. This material is then processed by the processor usually stored a certain time before it Cold forming is fed.
  • the camp has the function a buffer that ensures that there is always a sufficient amount of material available for processing stands.
  • a problem with the storage of curable materials the above-described type of aluminum strips produced consists in the fact that with tapes that are on leaving the Rolling mill is in the annealed and quenched state, this condition is not stable. So immediately after the End the heat treatment as "cold curing" designated process, in the course of which increasing Form lots of fine, metastable material phases, through which the deformability of the material is impaired. Therefore aluminum straps must be delivered within certain deadlines, for example after three months at the latest, but ideally within 14 days after the production of the Cold forming can be supplied. Harden after this time the tapes so strong that their trouble-free Further processing is no longer guaranteed. The limited Durability of the aluminum strips brings for the processor logistical problems and the danger that in the case of a Malfunction larger quantities of those kept in stock Aluminum strips become unusable.
  • the invention has for its object a method for Manufacture of cold-formed components from curable Specify aluminum materials where the workability of the aluminum strip used regardless of the storage time is.
  • the Invention before the heat treatment of the aluminum strips or Aluminum sheets only after storage shortly before cold forming perform. Since thus between the Heat treatment and cold forming are only minor Period of time, the process of cold curing can no longer use to a significant extent.
  • the aluminum band or - This is how sheet metal is when it enters the Cold forming device in an optimal one for the deformation Structural state, in which there is a low yield strength, a has a favorable yield ratio and high elongation values.
  • Another significant advantage of the invention is that the rolled aluminum strip is no longer required or sheet before it is stored in the processor's warehouse undergo an extensive annealing treatment. So can those required in the conventional approach Significant investments in the construction and the Operation of the continuous furnaces used for annealing saved become. Instead, small, compact and therefore inexpensive devices for heat treatment at Processors are set up. These devices can without any problems with regard to the respective heating task be optimized. The processor is doing this regardless of shelf life and can do so required aluminum strip or sheet at any time according to the consume actual demand. Capacity bottlenecks or insufficient utilization of the aluminum strip processing Devices or plates used can be avoided become.
  • the method according to the invention is particularly suitable for Manufacture of components from aluminum strip or sheet, the a small width and a larger one in relation to the width Has thickness.
  • Such tapes can be inexpensive manufacturable and operable devices effectively be heat treated, the respective Heating devices in contrast to conventional used continuous furnaces in a simple way to the special Task can be adapted.
  • Another particular advantage of the invention is Connection with processing thicker, narrower Aluminum strips or sheets in that for heating of these strips or sheets used without facilities special effort can be designed so that a safe Warming through the respectively heated aluminum strip or sheet is guaranteed. This leads to a further improvement the quality of the thick strips or sheets manufactured end products.
  • a particularly advantageous embodiment of the invention is characterized in that the heating during the annealing done inductively.
  • Facilities where exposure of an electromagnetic field an inductive heating of the processed goods are carried out, enable the tape to be heated to the within a short time heat the required annealing temperature.
  • Both the Duration and temperature development are precisely controlled be so that an optimal treatment result is achieved. For this reason, working inductively Heating devices especially for the heat treatment of narrow and thick bands or from such bands manufactured blanks where a proper Warming of the material is required, which in conventionally used continuous furnaces only under Difficulties to be guaranteed.
  • An aluminum strip 1 produced from a hardenable alloy of small width and great thickness is in a rolling mill 2 in a conventional manner by rolling from a slab manufactured.
  • the aluminum strip 1 reeled into coils 3 leaves the rolling mill 2, without a final one beforehand Heat treatment, such as solution annealing and quenching a continuous furnace.
  • the coils 3 are sent to a processor 4, which is for example a plant for the production of Body components can act, delivered and in its warehouse 5 stored. From the warehouse 5, the coils 3 if necessary removed and transferred to a production line 6.
  • the production line 6 comprises a decoiler 7, one Heat treatment device 8, a blanking press 9 and a multi-stage press 10.
  • the Heat treatment device 8 is in the feed area 9a Blank press 9 arranged. It includes one here in the individual device 8a, not shown, for inductive heating and one also not shown in detail Quenching device 8b.
  • In the heater 8a one that extends across the width of the material to be heated, Induction coil, not shown, arranged which is an electromagnetic Field generated that the heating of each in Area of action of the coil located goods.
  • the coils 3 removed from the warehouse 5 are in the Decoiler 7 given. From this the uncoiled Aluminum strip 1 supplied to the heat treatment device 8.
  • the one located in the heat treatment device 8 Section of aluminum strip 1 is initially for a short Time, for example 2 to 3 seconds, from the inductive working heater 8a to solution annealing temperature brought. Then the relevant one, to annealing temperature heated section of the aluminum strip 1 in the Quenching device 8b quenched.
  • the one heat treated section of the aluminum strip 1 arrives then in the blanking press 9, which comes from the band Cuts 11 stamps.
  • the blanks 11 are then the Multi-stage press 10 supplied.
  • Fig. 2 In the process sequence shown in Fig. 2 comprises a Production line 20 a decoiler 21, a Heat treatment device 22, a blanking press 23 as well as several multi-stage presses 24, 25, 26, 27, 28, 29.
  • the heat treatment device 22 is in the feed area 23a the blank press 23 arranged. Like the one in Fig. 1 shown heat treatment device 9 in here individual device 22a, not shown, for inductive Warm up and one also not shown in detail Quench 22b.
  • the uncoiler 21 is a coil 30 wound, consisting of a hardenable alloy Given aluminum tape 31, which previously as with 1 in a rolling mill and has been stored in a warehouse by the processor.
  • the aluminum strip 31 in the Heat treatment device 22 fed in which it from of the heating device 22a for a short time Solution annealing temperature warmed and then from the Quenching device 22b is quenched. That way heat treated, an optimal condition for cold forming having aluminum strip 31 then gets into the Blank stamping press 23, in which the aluminum strip 31 Blanks 33 are punched. From the blanking press 23 the blanks 33 reach the multi-stage presses 24-29, in which they are cold formed into multi-stage body components become.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Bipolar Transistors (AREA)
  • Metal Rolling (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Photovoltaic Devices (AREA)

Claims (9)

  1. Procédé de fabrication de pièces façonnées à froid (12) à partir d'un matériau à base d'aluminium durcissable, comprenant les étapes suivantes :
    production d'une bande (1) ou d'une tôle d'aluminium,
    stockage intermédiaire de la bande (1) ou de la tôle d'aluminium,
    traitement thermique de la bande ( 1) ou de la tôle d'aluminium, et
    façonnage à froid de la bande (1) ou de la tôle d'aluminium,
    dans lequel il s'écoule peu de temps entre le traitement thermique et le façonnage à froid.
  2. Procédé selon la revendication 1, caractérisé en ce que le traitement thermique comprend un recuit et une trempe de la bande (1) ou de la tôle d'aluminium.
  3. Procédé selon la revendication 2, caractérisé en ce que le chauffage se fait par induction pendant le recuit.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande (1) ou la tôle d'aluminium est découpée en pièces (11) avant d'être amenée au façonnage à froid.
  5. Procédé selon la revendication 4, caractérisé en ce que la découpe des pièces (11) se fait avant le traitement thermique.
  6. Procédé selon la revendication 4, caractérisé en ce que la découpe se fait en position centrale, d'où les pièces (11) sont transférés aux dispositifs de façonnage à froid, et en ce que le traitement thermique de la bande (1) ou de la tôle d'aluminium est réalisé directement avant l'entrée dans le dispositif de découpe (8).
  7. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le traitement thermique se fait dans la zone d'entrée du dispositif (10) utilisé pour le façonnage à froid.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande (1) ou la tôle d'aluminium présente une largeur allant jusqu'à 1000 mm.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la bande (1) ou la tôle d'aluminium présente une épaisseur de plus de 3 mm.
EP00112192A 1999-06-10 2000-06-07 Méthode pour un procédé intégré de traitement thermique Expired - Lifetime EP1059363B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19926229A DE19926229C1 (de) 1999-06-10 1999-06-10 Verfahren zum prozeßintegrierten Wärmebehandeln
DE19926229 1999-06-10

Publications (3)

Publication Number Publication Date
EP1059363A1 EP1059363A1 (fr) 2000-12-13
EP1059363B1 true EP1059363B1 (fr) 2003-08-27
EP1059363B2 EP1059363B2 (fr) 2010-11-03

Family

ID=7910639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112192A Expired - Lifetime EP1059363B2 (fr) 1999-06-10 2000-06-07 Méthode pour un procédé intégré de traitement thermique

Country Status (5)

Country Link
EP (1) EP1059363B2 (fr)
AT (1) ATE248239T1 (fr)
DE (2) DE19926229C1 (fr)
ES (1) ES2204400T5 (fr)
PT (1) PT1059363E (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797454B1 (fr) 1999-08-12 2001-08-31 Pechiney Rhenalu Bande ou tube en alliage d'aluminium pour la fabrication d'echangeurs de chaleur brases
DE102006006849A1 (de) * 2006-02-15 2007-08-16 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zum Ausscheidungshärten von hochlegierten Nichteisenmetallen
EP2248926A1 (fr) 2009-04-17 2010-11-10 voestalpine Automotive GmbH Procédé de fabrication d'une pièce emboutie
DE102011103269A1 (de) 2011-05-26 2012-11-29 Thyssenkrupp System Engineering Gmbh Glühvorrichtunng und Verfahren zum Glühen von Metallplatten

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087815B (de) * 1952-09-22 1960-08-25 Osnabruecker Kupfer Und Draht Verfahren zur Herstellung von texturfrei bleibendem Tiefziehmaterial aus Aluminium
US3135633A (en) † 1959-09-08 1964-06-02 Duralumin Heat treatment process improving the mechanical properties of aluminiummagnesium-silicon alloys
US4077813A (en) † 1976-07-26 1978-03-07 Nasa Method of producing complex aluminum alloy parts of high temper, and products thereof
JPS63501581A (ja) * 1985-11-04 1988-06-16 アルミナム　カンパニー　オブ　アメリカ アルミニウム合金製車両用部材
DE3728041A1 (de) † 1987-08-22 1989-03-02 Messer Griesheim Gmbh Verfahren zur herstellung von biegeteilen aus vorverfestigten metallen durch kaltumformung
BR9103666A (pt) † 1990-08-27 1992-05-19 Aluminum Co Of America Metodo de producao de um produto de folha de liga a base de aluminio e produto feito pelo dito metodo
US5496426A (en) † 1994-07-20 1996-03-05 Aluminum Company Of America Aluminum alloy product having good combinations of mechanical and corrosion resistance properties and formability and process for producing such product
JP4168411B2 (ja) * 1994-09-06 2008-10-22 ノベリス・インコーポレイテッド アルミニウム合金シートの熱処理方法
CA2218024C (fr) † 1995-05-11 2008-07-22 Kaiser Aluminum And Chemical Corporation Alliage 6xxx a base d'aluminium, ameliore et tolerant aux dommages
DE19619034C2 (de) * 1995-07-18 1998-01-22 Mannesmann Ag Verfahren zur Verbesserung der Umformbarkeit bei der Herstellung von Bauteilen aus Leichtmetallband
EP0848073B1 (fr) † 1996-12-16 2002-05-08 Corus Aluminium Walzprodukte GmbH Détensionnement d'une pièce en alliage d'aluminium durcissable
US5948185A (en) † 1997-05-01 1999-09-07 General Motors Corporation Method for improving the hemmability of age-hardenable aluminum sheet
US6033499A (en) † 1998-10-09 2000-03-07 General Motors Corporation Process for stretch forming age-hardened aluminum alloy sheets
FR2792001B1 (fr) † 1999-04-12 2001-05-18 Pechiney Rhenalu Procede de fabrication de pieces de forme en alliage d'aluminium type 2024

Also Published As

Publication number Publication date
ES2204400T5 (es) 2011-03-22
ATE248239T1 (de) 2003-09-15
EP1059363A1 (fr) 2000-12-13
DE50003417D1 (de) 2003-10-02
PT1059363E (pt) 2003-12-31
DE19926229C1 (de) 2001-02-15
EP1059363B2 (fr) 2010-11-03
ES2204400T3 (es) 2004-05-01

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