EP2248926A1 - Procédé de fabrication d'une pièce emboutie - Google Patents

Procédé de fabrication d'une pièce emboutie Download PDF

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Publication number
EP2248926A1
EP2248926A1 EP09450081A EP09450081A EP2248926A1 EP 2248926 A1 EP2248926 A1 EP 2248926A1 EP 09450081 A EP09450081 A EP 09450081A EP 09450081 A EP09450081 A EP 09450081A EP 2248926 A1 EP2248926 A1 EP 2248926A1
Authority
EP
European Patent Office
Prior art keywords
aluminum sheet
cold
forming
aluminum
heated
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.)
Withdrawn
Application number
EP09450081A
Other languages
German (de)
English (en)
Inventor
Karl Michael Radlmayr
Wolfgang Stall
Claudio Canalini
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.)
Voestalpine Metal Forming GmbH
Original Assignee
Voestalpine Metal Forming GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voestalpine Metal Forming GmbH filed Critical Voestalpine Metal Forming GmbH
Priority to EP09450081A priority Critical patent/EP2248926A1/fr
Priority to US13/264,855 priority patent/US10022769B2/en
Priority to CN201080017128.9A priority patent/CN102395699B/zh
Priority to ES10718421T priority patent/ES2887329T3/es
Priority to EP10718421.0A priority patent/EP2419547B1/fr
Priority to PCT/AT2010/000120 priority patent/WO2010118454A1/fr
Publication of EP2248926A1 publication Critical patent/EP2248926A1/fr
Withdrawn legal-status Critical Current

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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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • 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

Definitions

  • the invention relates to a method for producing a molded part from an aluminum sheet having an aluminum alloy, in particular from an aluminum alloy of the 5000 series, in which at least the aluminum sheet is introduced into a forming tool and cold formed by this and in a further step or in further steps the cold-formed aluminum sheet is heated at least once at least in some areas and at least once further formed.
  • the invention is therefore based on the object to improve a method of the type described in such a way that, despite a high strength of the molding a fast turnaround time in the production of the molding and a flexibly customizable production output of moldings can be made possible.
  • this method should provide a cost-effective production of moldings.
  • the invention solves this problem by the fact that the heated aluminum sheet is subjected to further forming before reaching a temperature which has the aluminum sheet during its cold forming.
  • the heated aluminum sheet is subjected to further shaping before reaching a temperature which the aluminum sheet has during its cold forming, then not only can the time interval between the two forming steps be reduced, so that comparatively short throughput times can be achieved, but it can also prove that this does not significantly reduce the strength of the molding compared to other processes.
  • the heating can be used advantageously or can certainly be used for the recovery of the microstructure of the aluminum alloy in order to be able to counteract unwanted strain hardening. This is readily possible for a person skilled in the art via the parameters of time and / or temperature level during heating and possibly also over the time of a subsequent cooling.
  • the parameters during heating and thereby not excluded cooling of the aluminum sheet can certainly be chosen or adjusted so that, for example, before cooling the heated and cold-formed aluminum sheet to room temperature, the aluminum sheet can be subjected to further forming.
  • this does not exclude that several times heating and / or cooling of the aluminum sheet until further Reshaping is carried out, it can only be crucial that the heated aluminum sheet is subjected to further forming before reaching a temperature which has the aluminum sheet during its cold forming.
  • a method can now be provided which can combine the advantages of a short throughput time on the one side, which are contrary to the prior art, with a comparatively high degree of deformation and a comparatively high strength on the other side.
  • an inventive method in the production of a molded part with an aluminum alloy on relatively large production areas which must exist for example by a storage during artificial aging, can be dispensed with, so that thus a cost-effective production can be possible.
  • an oven for a cold aging can be avoided, which does not require a significant number of cold-formed aluminum sheets must be made so that a flexibly adaptable production output can be possible by the inventive method.
  • an aluminum sheet can be understood as a flat finished rolling mill made of an aluminum material or aluminum alloy.
  • the aluminum sheet is formed by the cold forming into a partial shape of the molded part and by the further forming in the final shape of the molded part, then increased deformation of the molded part can open, because the aluminum sheet can be exposed to increased stresses by a heated further forming.
  • increased deformation of the molded part can open, because the aluminum sheet can be exposed to increased stresses by a heated further forming.
  • the degree of deformation during cold forming can be set such that the heating carried out in a next step and, if appropriate, cooling is sufficient to reduce such strain hardening in the microstructure that no substantial change in strength must be expected.
  • An advantageous recovery of the structure after the cold forming may result if the cold-formed aluminum sheet is heated below the recrystallization temperature of the aluminum alloy, in particular between 150 and 350 degrees Celsius.
  • the method according to the invention can allow the aluminum sheet to be removed from the lubricant only in one step after further forming.
  • the applied lubricant can thus remain on the aluminum sheet during the process, because its disintegration can be avoided by avoiding a thermal aging known from the prior art. Costly and time-consuming cleaning steps are reduced so advantageous because only in one step after further forming the lubricant is removed from the aluminum sheet.
  • Lubricants or lubricants with a temperature resistance up to 350 degrees Celsius are known from the prior art.
  • Advantageous properties for the production of the molded part result when the aluminum sheet is at least partially reshaped by deep drawing. Likewise, this can be applied to a combination of deep drawing and ironing to reshape the aluminum sheet.
  • the aluminum sheet is introduced during further forming in a forming tool, then advantageous process conditions for the production of the molded part can be created. It may also be possible to reuse the forming tool already used in cold forming, which may save costs. If the forming tool is heated, then a possible cooling of the aluminum sheet can be reduced.
  • the cold-formed aluminum sheet is at least partially trimmed before and / or after further forming, then a special accuracy of the molded part thus created can be made possible.
  • FIGS. 1 to 6 For example, the inventive method for producing a molded part 1 after Fig. 7 described in more detail. So is according to Fig. 1 to recognize that an aluminum sheet 2 having an aluminum alloy, for example, the 5000, 6000 or 7000 series, after Fig. 2 a change in shape in particular deformation is subjected.
  • the 5000 series has been found to be preferred because this alloy comparatively solid, formable and easier to process further.
  • the aluminum sheet 2 is introduced for the purpose of forming in the forming tool 3 and is cold-formed therein at room temperature, in particular deep-drawn. Thereafter, the cold-formed aluminum sheet 2 is removed from the forming tool 3 and a according to Fig. 4a heated gas burner 4 shown schematically.
  • the cold-formed aluminum sheet 2 can thus be heated in whole or in part, in the latter case this can be in or in the surrounding area of the areas of the aluminum sheet 2 which are the most stressed by the forming. Temperatures in the range of 150 to 350 degrees Celsius are conceivable, but the heating should be below the recrystallization temperature of the aluminum alloy.
  • a further step after Fig. 5 the aluminum sheet 2 is subjected to a further deformation with a forming tool 5, said forming tool 5 also optionally the forming tool 3 after Fig.
  • the aluminum sheet 2 in this further transformation Fig. 5 at least partially an elevated temperature relative to the temperature during cold working. This can be achieved in that even before cooling the heated cold-formed aluminum sheet 2 to its temperature during the cold forming after Fig. 2 the aluminum sheet 2 of the further transformation Fig. 5 is subjected. It can therefore be created an "in-line" process in manufacturing, because the well-known from the prior art artificial aging can not interrupt the inventive method. So can react faster to customer requirements in the number of units, which among other things, a complex storage support can avoid.
  • the method according to the invention also makes it possible to provide a device with a reduced space requirement, because, for example, the comparatively large space requirement for hot aging can be avoided.
  • a temperature-resistant lubricant 8 for this representation of the method step is in Fig. 1 a spray nozzle 9 is shown, via which the lubricant 8 can be applied to the aluminum sheet 2. Since the method according to the invention can avoid long process steps, such as those caused by artificial aging, and in contrast to the aluminum sheet 2 is formed into a molded part 1 in comparatively short time intervals, the lubricant 8 can on the assumption of a temperature resistance to the last step on the Aluminum sheet 2 remain without a decomposition of the lubricant 8 must be feared. Elaborate cleaning processes or a repeated application of lubricant 8 can be avoided. In contrast to the prior art is thus conceivable that lubricant 8 from the aluminum sheet 2 only in one step after further forming after Fig. 5 to remove, for example, in the step after Fig. 7 can be done.
  • a particularly uniform and / or positionally accurate heating of the cold-formed aluminum sheet 2 can take place if this in the form of the aluminum sheet 2 at least partially following counter-forms 10, 11 of a heating tool 12 is introduced, which heating tool 12 in Fig. 4b is shown.
  • heating tool 12 in Fig. 4b is shown.
  • heating means 13 are provided at the locations of the desired heating.
  • the cold-formed aluminum sheet 2 is introduced into a tool 14 in order to be able to trim it at least to partial dimensions.
  • This tool 14 may already be provided with means for heating the cold-formed aluminum sheet 2, which has not been shown in detail. This could, however, the process step after Fig. 4a or 4b be avoided.
  • the final form 7 can be further trimmed, including in Fig. 6 this is introduced into a tool 15.
  • This tool 15 can also the tool 14 after Fig. 3 represent.
  • the final shape 7 can be shortened and / or possibly also punched.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (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)
EP09450081A 2009-04-17 2009-04-17 Procédé de fabrication d'une pièce emboutie Withdrawn EP2248926A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP09450081A EP2248926A1 (fr) 2009-04-17 2009-04-17 Procédé de fabrication d'une pièce emboutie
US13/264,855 US10022769B2 (en) 2009-04-17 2010-04-19 Method for producing a shaped part from an aluminum alloy sheet
CN201080017128.9A CN102395699B (zh) 2009-04-17 2010-04-19 用于制造成形件的方法
ES10718421T ES2887329T3 (es) 2009-04-17 2010-04-19 Procedimiento para producir una pieza moldeada
EP10718421.0A EP2419547B1 (fr) 2009-04-17 2010-04-19 Procédé de formage d'une pièce
PCT/AT2010/000120 WO2010118454A1 (fr) 2009-04-17 2010-04-19 Procédé de fabrication d'une pièce moulée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09450081A EP2248926A1 (fr) 2009-04-17 2009-04-17 Procédé de fabrication d'une pièce emboutie

Publications (1)

Publication Number Publication Date
EP2248926A1 true EP2248926A1 (fr) 2010-11-10

Family

ID=41058514

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09450081A Withdrawn EP2248926A1 (fr) 2009-04-17 2009-04-17 Procédé de fabrication d'une pièce emboutie
EP10718421.0A Active EP2419547B1 (fr) 2009-04-17 2010-04-19 Procédé de formage d'une pièce

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10718421.0A Active EP2419547B1 (fr) 2009-04-17 2010-04-19 Procédé de formage d'une pièce

Country Status (5)

Country Link
US (1) US10022769B2 (fr)
EP (2) EP2248926A1 (fr)
CN (1) CN102395699B (fr)
ES (1) ES2887329T3 (fr)
WO (1) WO2010118454A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017000483A1 (de) 2017-01-19 2018-07-19 Audi Ag Verfahren zur Bearbeitung eines Bauteils

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006040224A1 (de) * 2006-08-28 2008-03-20 Magna Automotive Services Gmbh Verfahren und Werkzeug zum Warmumformen eines Metallwerkstücks
JP5808724B2 (ja) * 2012-10-31 2015-11-10 アイシン高丘株式会社 アルミニウム合金材のダイクエンチ装置およびダイクエンチ方法
US9587298B2 (en) * 2013-02-19 2017-03-07 Arconic Inc. Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same
JP2016523719A (ja) * 2013-07-12 2016-08-12 マグナ インターナショナル インコーポレイテッド 注文仕様の機械的特性を有するアルミニウム合金部品の成形方法
GB2590052B (en) * 2019-09-25 2021-12-08 Imp College Innovations Ltd Aluminium forming method
CN113523098B (zh) * 2021-07-05 2022-05-31 太原理工大学 一种对箔带稳定施加超声振动辅助拉伸的装置
US11914431B2 (en) * 2021-07-22 2024-02-27 Dell Products L.P. Method of creating mechanical strength and industrial design aesthetics for hinge area of computing devices

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324596A (en) * 1980-10-29 1982-04-13 General Signal Corporation Method for substantially cold working nonheat-treatable aluminum alloys
EP0726106A1 (fr) * 1995-02-03 1996-08-14 Daimler-Benz Aerospace Aktiengesellschaft Procédé pour transformer un élément en forme de plaque
EP1059363A1 (fr) * 1999-06-10 2000-12-13 VAW Aluminium AG Méthode pour un procédé intégré de traitement thermique
DE102008032911A1 (de) 2008-07-12 2009-03-19 Daimler Ag Verfahren zur Herstellung eines Formteils

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CH621271A5 (fr) * 1977-06-15 1981-01-30 Aluminiumwerke Ag Rorschach
EP0380662B1 (fr) * 1988-06-04 1994-09-07 Toyo Seikan Kaisha, Ltd. Procede de production d'un recipient faconne par etirage
US5388330A (en) * 1993-10-12 1995-02-14 Motor Wheel Corporation Method for making disc wheels
US6550302B1 (en) * 1999-07-27 2003-04-22 The Regents Of The University Of Michigan Sheet metal stamping die design for warm forming
FR2851579B1 (fr) * 2003-02-26 2005-04-01 Pechiney Rhenalu PROCEDE D'EMBOUTISSAGE A TIEDE DE PIECES EN ALLIAGE A1-Mg
US7260972B2 (en) * 2004-03-10 2007-08-28 General Motors Corporation Method for production of stamped sheet metal panels
DE102005018240B4 (de) * 2005-04-19 2010-11-18 Benteler Automobiltechnik Gmbh Vorrichtung zum Umformen von Metallblechen
US7730753B2 (en) * 2007-02-06 2010-06-08 Gm Global Technology Operations, Inc. Lubricant for elevated temperature forming
US7661282B2 (en) * 2008-03-21 2010-02-16 Gm Global Technology Operations, Inc. Hot forming process for metal alloy sheets
CN101284298B (zh) * 2008-06-05 2010-12-15 中国船舶重工集团公司第十二研究所 用于大尺寸锻造的铝合金半固态坯料的制备方法
DE102009031449A1 (de) * 2009-07-01 2010-03-25 Daimler Ag Verfahren zum Herstellen eines Aluminiumformteils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324596A (en) * 1980-10-29 1982-04-13 General Signal Corporation Method for substantially cold working nonheat-treatable aluminum alloys
EP0726106A1 (fr) * 1995-02-03 1996-08-14 Daimler-Benz Aerospace Aktiengesellschaft Procédé pour transformer un élément en forme de plaque
EP1059363A1 (fr) * 1999-06-10 2000-12-13 VAW Aluminium AG Méthode pour un procédé intégré de traitement thermique
DE102008032911A1 (de) 2008-07-12 2009-03-19 Daimler Ag Verfahren zur Herstellung eines Formteils

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017000483A1 (de) 2017-01-19 2018-07-19 Audi Ag Verfahren zur Bearbeitung eines Bauteils
DE102017000483B4 (de) * 2017-01-19 2020-10-29 Audi Ag Verfahren zur Bearbeitung eines Bauteils

Also Published As

Publication number Publication date
EP2419547B1 (fr) 2021-06-02
CN102395699A (zh) 2012-03-28
US20120090371A1 (en) 2012-04-19
CN102395699B (zh) 2017-12-12
US10022769B2 (en) 2018-07-17
ES2887329T3 (es) 2021-12-22
EP2419547A1 (fr) 2012-02-22
WO2010118454A1 (fr) 2010-10-21

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