EP1483422B1 - Verwendung von dünnen band aus aluminium-eisen-legierung - Google Patents

Verwendung von dünnen band aus aluminium-eisen-legierung Download PDF

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Publication number
EP1483422B1
EP1483422B1 EP03739530A EP03739530A EP1483422B1 EP 1483422 B1 EP1483422 B1 EP 1483422B1 EP 03739530 A EP03739530 A EP 03739530A EP 03739530 A EP03739530 A EP 03739530A EP 1483422 B1 EP1483422 B1 EP 1483422B1
Authority
EP
European Patent Office
Prior art keywords
alloy
strips
strip
trays
dishes
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
EP03739530A
Other languages
English (en)
French (fr)
Other versions
EP1483422A2 (de
Inventor
Jacques Gagniere
Raphaël WIETZKE
Jean-Marie Feppon
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.)
Novelis Inc Canada
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Novelis Inc Canada
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Filing date
Publication date
Application filed by Novelis Inc Canada filed Critical Novelis Inc Canada
Publication of EP1483422A2 publication Critical patent/EP1483422A2/de
Application granted granted Critical
Publication of EP1483422B1 publication Critical patent/EP1483422B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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

Definitions

  • the invention relates to the use of thin strips, typically of a thickness of between 30 and 150 ⁇ m, of alloy of the iron-aluminum type, suitable for stamping, intended in particular for packaging, and more particularly for the manufacture of trays and thin plates for the distribution of foodstuffs and fast food.
  • Al-Fe 8000 series alloys according to the nomenclature of the Aluminum Association are widely used for the manufacture of thin sheets or strips for packaging. Their manufacture can be done either conventionally by casting a plate, hot rolling, then cold, with one or more intermediate annealing and usually a final annealing, either by continuous casting, for example between two rolls, and cold rolling, and optionally one or more anneals.
  • the continuous strip casting allows, for a moderate investment cost, to obtain in a fairly wide range of alloys strips that do not require subsequent hot rolling.
  • significant progress has been made by casting machine manufacturers in reducing the thickness of the cast strip, which can in some cases go down to about 1 mm, thereby decreasing cold rolling at carry out.
  • the patent US 5380379 Alcoa Aluminio de Nordeste concerns the manufacture, by continuous casting between rolls, of very thin alloy sheets containing 1.35 to 1.6% iron, 0.3 to 0.6% manganese, 0, 1 to 0.4% copper and less than 0.2% silicon.
  • the silicon content is limited by the appearance of intermetallic phases of AlFeSi or AlMnSi type, while the presence of copper is necessary to give the product sufficient mechanical strength.
  • the patent application WO 98/52707 of the applicant describes a method of manufacturing aluminum alloy strips containing (by weight) at least one of the elements Fe (from 0.15 to 1.5%) or Mn (from 0.35 to 1.9 %) with Fe + Mn ⁇ 2.5%, and optionally containing Si ( ⁇ 0.8%), Mg ( ⁇ 0.2%), Cu ( ⁇ 0.2%) by continuous casting between cooled and shrink rolls at a thickness of between 1 and 5 mm, followed by cold rolling.
  • the strips obtained have both a yield strength greater than that of the bands resulting from the conventional process, and good formability.
  • alloy 8021B whose composition recorded in the Aluminum Association is as follows (% by weight): Yes Fe Cu mn mg Cr Zn Ti ⁇ 0.40 1.1-1.7 ⁇ 0.05 ⁇ 0.03 ⁇ 0.01 ⁇ 0.03 ⁇ 0.05 ⁇ 0.05
  • the object of the invention is to improve the compromise between the mechanical strength, the formability and the isotropy of the mechanical properties with respect to this reference alloy.
  • the subject of the invention is also a process for producing alloy strips of this composition by continuous casting between rolls of a strip of thickness of between 2 and 10 mm, optionally homogenizing this strip between 420 and 550 ° C. the cold rolling of this strip to the final thickness with optionally an intermediate annealing of 1 to 4 hours between 300 and 350 ° C, and a final annealing at a temperature between 200 and 430 ° C of a duration at least 30 hours.
  • the alloy used for the sheets and strips according to the invention is characterized by an iron content of between 1.5 and 1.9%, which is higher than that customarily used for the alloy 8021B intended for the manufacture of dishes and trays. .
  • the advantage of a higher iron content lies in the improvement of the mechanical strength; this effect is even more marked when the strips are obtained by continuous casting between rolls.
  • the iron content must remain below 1.9% in order to avoid getting too close to the AlFe eutectic content, and thus to see AlFe coarse primary phases.
  • the other characteristic is a manganese content of between 0.04 and 0.15%.
  • This addition has a favorable effect on the mechanical strength, while maintaining a high level of elongation, the compromise between these usually antagonistic properties being markedly improved when the strips are produced by continuous casting. Beyond 0.15% of manganese, it plays more clearly its role anti-recrystallizer, which may affect the effectiveness of the final annealing, necessary to obtain a good isotropy of mechanical characteristics.
  • the production of the sheets and strips according to the invention is preferably by continuous casting of a strip of thickness between 2 and 10 mm between two cylinders cooled and fretted ("twin-roll casting").
  • the cast strip can be homogenized, especially in the case where it is desired to promote the elongation rather than the mechanical strength. This homogenization must be done at a not too high temperature, between 420 and 550 ° C, to avoid too much degrade the mechanical strength. If the requirements for elongation are less restrictive, homogenization is not essential.
  • the strip is then cold rolled with the number of passes required up to the final thickness of between 30 and 150 ⁇ m.
  • This cold rolling can be done with or without intermediate annealing.
  • the intermediate annealing When the intermediate annealing is necessary, it must be relatively short, of the order of 1 to 4 hours, and be at a temperature not too high, typically between 300 and 350 ° C, to prevent grain growth. But it is possible, when not looking for very high values for elongation, to avoid both homogenization and intermediate annealing, which makes the range of manufacture particularly simple.
  • the laminated strip is then annealed at a temperature between 200 and 400 ° C, for a period of at least 30 hours, so as to obtain a recrystallized structure.
  • This annealing can be performed in one or more temperature stages, for example a first stage between 200 and 300 ° C, and a second between 300 and 400 ° C.
  • the strip is then cut into sheets if necessary.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Laminated Bodies (AREA)
  • Cookers (AREA)
  • Continuous Casting (AREA)
  • Table Devices Or Equipment (AREA)
  • Clamps And Clips (AREA)
  • Soft Magnetic Materials (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Claims (3)

  1. Verwendung 30 bis 150 µm dicker Bänder aus einer Aluminiumlegierung der Zusammensetzung (in Gew.-%): Si < 0,4; Fe: 1,5 bis 1,9; Mn: 0,04 bis 0,15; weitere Elemente: < 0,05 jeweils und 0,15 insgesamt, Rest: Aluminium, zur Herstellung von Flachschüsseln und Gefäßen für Lebensmittel.
  2. Verfahren zur Herstellung von Flachschüsseln und Gefäßen für Lebensmittel, umfassend:
    a. Bereitstellen einer Aluminiumlegierung der Zusammensetzung (in Gew.-%):
    Si < 0,4; Fe: 1,5 bis 1,9; Mn: 0,04 bis 0,15; weitere Elemente: < 0,05 jeweils und 0,15 insgesamt, Rest: Aluminium,
    b. kontinuierliches Gießen eines 2 bis 10 mm dicken Bandes zwischen Zylindern,
    c. gegebenenfalls Homogenisieren dieses Bandes zwischen 420 und 550°C,
    d. Kaltlaminieren dieses Bandes auf eine Enddicke von 30 bis 150 µm, mit gegebenenfalls einer Zwischenglühstufe zwischen 300 und 350°C 1 bis 4 h lang,
    e. Endglühen bei einer Temperatur zwischen 200 und 400°C mindestens 30 h lang und
    f. endgültige Formgebung zum Erhalt der Flachschüsseln oder Gefäße.
  3. Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, dass das endgültige Glühen in 2 Stufen, die erste zwischen 200 und 300°C und die zweite zwischen 300 und 400°C, durchgeführt wird.
EP03739530A 2002-02-15 2003-02-12 Verwendung von dünnen band aus aluminium-eisen-legierung Expired - Lifetime EP1483422B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0201959 2002-02-15
FR0201959A FR2836154B1 (fr) 2002-02-15 2002-02-15 Bandes minces en alliage aluminium-fer
PCT/FR2003/000452 WO2003069003A2 (fr) 2002-02-15 2003-02-12 Bandes minces en alliage aluminium-fer

Publications (2)

Publication Number Publication Date
EP1483422A2 EP1483422A2 (de) 2004-12-08
EP1483422B1 true EP1483422B1 (de) 2008-04-16

Family

ID=27636231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03739530A Expired - Lifetime EP1483422B1 (de) 2002-02-15 2003-02-12 Verwendung von dünnen band aus aluminium-eisen-legierung

Country Status (11)

Country Link
US (1) US20050207934A1 (de)
EP (1) EP1483422B1 (de)
AT (1) ATE392489T1 (de)
AU (1) AU2003226882A1 (de)
BR (1) BR0307633A (de)
CA (1) CA2475700A1 (de)
DE (1) DE60320387T2 (de)
FR (1) FR2836154B1 (de)
NO (1) NO20043388L (de)
RU (1) RU2004127592A (de)
WO (1) WO2003069003A2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2857981A1 (fr) * 2003-07-21 2005-01-28 Pechiney Rhenalu FEUILLES OU BANDES MINCES EN ALLIAGES AIFeSI
WO2007006426A2 (en) * 2005-06-29 2007-01-18 Novelis, Inc. Process of producing a foil of an al-fe-si type aluminium alloy and foil thereof
US20100084053A1 (en) * 2008-10-07 2010-04-08 David Tomes Feedstock for metal foil product and method of making thereof
FR2957280B1 (fr) 2010-03-12 2012-07-13 Centre Nat Rech Scient Procede de fabrication d'un complexe metallique
MX2016016891A (es) 2014-07-09 2017-06-20 Hydro Aluminium Rolled Prod Uso de una aleacion de aluminio o de un producto laminado de aluminio hecho de una aleacion de este tipo para una parte compuesta de aluminio-plastico.
EP3235916B1 (de) 2016-04-19 2018-08-15 Rheinfelden Alloys GmbH & Co. KG Gusslegierung
JP7153469B2 (ja) * 2018-05-29 2022-10-14 株式会社Uacj 成形性、強度及び外観品質に優れたアルミニウム合金板及びその製造方法
EP4015658A1 (de) * 2020-12-18 2022-06-22 Speira GmbH Aluminiumfolie mit verbesserter barriereeigenschaft

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362127B1 (de) * 1988-09-27 1993-10-06 Alusuisse-Lonza Services Ag Kathodenfolie für Elektrolytkondensatoren
US5380379A (en) * 1993-08-18 1995-01-10 Alcoa Aluminio Do Nordeste S.A. Aluminum foil product and manufacturing method
GB9405415D0 (en) * 1994-03-18 1994-05-04 Alcan Int Ltd Aluminium foil
FR2763602B1 (fr) * 1997-05-20 1999-07-09 Pechiney Rhenalu Procede de fabrication de bandes en alliages d'aluminium par coulee continue mince entre cylindres

Also Published As

Publication number Publication date
ATE392489T1 (de) 2008-05-15
RU2004127592A (ru) 2005-05-10
DE60320387T2 (de) 2008-08-07
CA2475700A1 (fr) 2003-08-21
FR2836154B1 (fr) 2004-10-22
WO2003069003A3 (fr) 2004-03-25
FR2836154A1 (fr) 2003-08-22
WO2003069003A2 (fr) 2003-08-21
BR0307633A (pt) 2005-01-11
US20050207934A1 (en) 2005-09-22
AU2003226882A1 (en) 2003-09-04
NO20043388L (no) 2004-11-15
EP1483422A2 (de) 2004-12-08
DE60320387D1 (de) 2008-05-29

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