EP1466992B1 - A flat rolled semi-finished product from an aluminium alloy - Google Patents

A flat rolled semi-finished product from an aluminium alloy Download PDF

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Publication number
EP1466992B1
EP1466992B1 EP03008147A EP03008147A EP1466992B1 EP 1466992 B1 EP1466992 B1 EP 1466992B1 EP 03008147 A EP03008147 A EP 03008147A EP 03008147 A EP03008147 A EP 03008147A EP 1466992 B1 EP1466992 B1 EP 1466992B1
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EP
European Patent Office
Prior art keywords
semi
soft annealing
aluminium alloy
finished product
aluminum alloy
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Expired - Lifetime
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EP03008147A
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German (de)
French (fr)
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EP1466992A1 (en
Inventor
Manfred Mrotzek
Werner Dr. Kehl
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Hydro Aluminium Deutschland GmbH
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Hydro Aluminium Deutschland GmbH
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Application filed by Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Priority to SI200330988T priority Critical patent/SI1466992T1/en
Priority to PT03008147T priority patent/PT1466992E/en
Priority to AT03008147T priority patent/ATE370256T1/en
Priority to EP03008147A priority patent/EP1466992B1/en
Priority to ES03008147T priority patent/ES2289201T3/en
Priority to DE50307952T priority patent/DE50307952D1/en
Priority to KR1020057019198A priority patent/KR100716607B1/en
Priority to PCT/EP2004/003397 priority patent/WO2004090184A1/en
Priority to US10/551,563 priority patent/US7846277B2/en
Priority to JP2006504929A priority patent/JP2006522868A/en
Publication of EP1466992A1 publication Critical patent/EP1466992A1/en
Publication of EP1466992B1 publication Critical patent/EP1466992B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • 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
    • C22C21/06—Alloys based on aluminium 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
    • C22F1/047—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys

Definitions

  • the present invention has the object to provide a method for producing a flat, rolled semi-finished aluminum alloy, which allows the use of standard alloys without the addition of Zn and Cu or other elements, without elaborate production facilities and ensures improved process reliability in terms of a flow line freedom of the deep-drawn or deformed final product.
  • the previously derived and indicated object is achieved by stretching the semifinished product by 0.1 to 0.5% after the final soft annealing.
  • the semi-finished product according to the invention has a long shelf life of several years, during which the properties do not change significantly.
  • it is not necessary to set a specific grain size so that the risk of the appearance of an orange peel during deformation is eliminated. It can thus be achieved with grain sizes below 50 microns flow line freedom.
  • no soft or solution annealing in a continuous furnace with subsequent deterrence is necessary.
  • the manufacturing process for producing the flat, rolled semi-finished product according to the invention has a high degree of robustness.
  • the process reliability during production of the semifinished product according to the invention is further increased.
  • the stretching of the flat, rolled semi-finished product can be done in different ways. Conceivable, for example, stretching in a strip stretching machine but also stretching with the help of alternate deflection of the strip or sheet in a so-called leveling system, in which the band is stretched at each deflection on the outer radius and compressed in the inner radius.
  • the deformability of the semifinished product in subsequent deformation or deep drawing steps can be improved by the associated heat treatment, without impairing the flow line freedom.
  • the single figure shows an embodiment of a plant for the realization of a method for producing a flat, rolled semi-finished aluminum alloy.
  • the embodiment of the plant for producing a flat, rolled semi-finished product according to the invention from an aluminum alloy, in particular a semifinished product for the production of body panels, has a hot rolling mill 1 with a Reversiergerüst 2 and optional a subsequent multi-stage hot rolling stand 3 on.
  • a billet 4 is rolled off, for example, from a standard alloy such as AA5052, AA5754 or AA5182 and then wound up in a coiling station to form a coil 5.
  • the strip After cooling of the coil 5, the strip is subjected to one or more cold rolling passes on a first cold rolling train 6, the degree of forming being at least 50% in order to reduce the recrystallization temperature of the strip.
  • the cold rolled, rewound strip is annealed in a box furnace 7.
  • the relatively coarse microstructure of the strip recrystallises almost completely, so that the strip is present in a soft and recrystallized state after the intermediate annealing.
  • the intermediate soft annealed strip on a second cold rolling line 8 again subjected to cold rolling with a degree of deformation of at most 30%.
  • the rewound strip is subjected to final soft annealing in a second chamber furnace 9.
  • the cooled strip is stretched by 0.1 to 0.5% on a so-called leveling system 10.
  • a strip stretching machine can be used, on which the strip is stretched over its entire cross section.

Abstract

Flat rolled semi-finished material made from an aluminum alloy has a degree of deformation of at least 50 % before a first intermediate soft annealing step and not more than 30 % before a final soft annealing step. The semi-finished material is drawn by 0.1-0.5 % after the final soft annealing step. The aluminum alloy contains alloying additions (in wt.%) 2-5 magnesium, = 0.5 manganese, = 0.35 chromium, = 0.4 silicon, = 0.4 iron, = 0.3 zinc, = 0.15 titanium. An independent claim is also included for a process for the production of a flat rolled semi-finished material made from an aluminum alloy.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines flächigen, gewalzten Halbzeugs aus einer Aluminiumlegierung, wobei die Aluminiumlegierung die folgenden Legierungsanteile in Gewichtsprozenten aufweist:

  • 2 ≤ Mg ≤ 5
    • Mn ≤ 0,5
    • Cr ≤ 0,35
    • Si ≤ 0,4
    • Fe ≤ 0,4
    • Cu ≤ 0,3
    • Zn ≤ 0,3
    • Ti ≤ 0,15
andere in Summe maximal 0,15, einzeln maximal 0,05, Rest A1, wobei das Halbzeug aus einem Barren abgewalzt wird, im Walzprozess mindestens einem Zwischenweichglühen zwischen zwei Kaltwalzstichen und einem Schlussweichglühen jeweils in einem Kammerofen unterworfen wird und der Umformgrad vor dem ersten Zwischenglühen mindestens 50 % und vor dem Schlussweichglühen höchstens 30 % beträgt.The invention relates to a process for the production of a flat, rolled semi-finished aluminum alloy, the aluminum alloy having the following proportions by weight in percent by weight:
  • 2 ≤ Mg ≤ 5
    • Mn≤0.5
    • Cr ≤ 0.35
    • Si ≤ 0.4
    • Fe ≤ 0.4
    • Cu ≤ 0.3
    • Zn≤0.3
    • Ti ≤ 0.15
Others in total not more than 0.15, individually maximum 0.05, remainder A1, wherein the semi-finished is rolled from a billet is subjected in the rolling process at least one intermediate soft annealing between two cold rolling passes and a final soft annealing respectively in a chamber furnace and the degree of deformation before the first intermediate annealing not more than 50% and not more than 30% before the final soft annealing.

Bei diesen flächigen, gewalzten Halbzeugen handelt es sich um Aluminiumbänder oder -bleche zur Weiterverarbeitung durch Verformen bzw. Tiefziehen beispielsweise zur Herstellung von Karosserieblechen für die Automobilindustrie. Es ist bekannt, dass Standardlegierungen wie z.B. AA5052, AA5754 oder AA5182, die Legierungsanteile in den angegebenen Bereichen aufweisen, beim Tiefziehen anfällig für die Bildung von Fließfiguren, insbesondere Fließlinien, sind. Derartige Fließfiguren sind für gehobene Ansprüche an die Oberfläche bei Karosserieaußenteilen in hohem Maße unerwünscht, dass sie auch nach dem Lackieren noch sichtbar sind.These flat, rolled semi-finished products are aluminum strips or sheets for further processing by deformation or deep drawing, for example for the production of body panels for the automotive industry. It is known that standard alloys such as e.g. AA5052, AA5754 or AA5182, which have alloying shares in the specified ranges, are prone to the formation of flow patterns, especially flow lines, during deep drawing. Such flow figures are highly undesirable for high demands on the surface in the case of exterior body parts that they are still visible even after painting.

Aus dem Stand der Technik sind darüber hinaus verschiedene Ansätze bekannt, die zu einer Reduzierung bzw. vollständigen Vermeidung der unerwünschten Fließlinien nach dem Verformen bzw. Tiefziehen führen. Hierbei sind insbesondere zu nennen der Zusatz von Zn und/oder Cu, der Entfall der Zwischenweichglühung und/oder die Schlussweichglühung im Durchlaufofen. Die Einstellung der Korngrößen durch den Zusatz von Zn und/oder Cu führt zu einer Erhöhung des Risikos, dass beim Verformen bzw. Tiefziehen eine sogenannte Orangenhaut entsteht. Bei fehlender Zwischenweichglühung entstehen erhöhte Anforderungen an den Kaltwalzprozess bzw. den vorgelagerten Warmwalzprozess, da die Stichabnahmen beim Kaltwalzen eingeschränkt sind. Die Verwendung eines Durchlaufofens ist schließlich zumindest mit hohen Anschaffungskosten verbunden.In addition, various approaches are known from the prior art, which lead to a reduction or complete avoidance of the undesirable flow lines after the forming or deep drawing. Here are in particular to call the addition of Zn and / or Cu, the elimination of Zwischenweichglühung and / or the final soft annealing in a continuous furnace. The adjustment of the grain sizes by the addition of Zn and / or Cu leads to an increase in the risk that during deformation or deep drawing a so-called orange peel arises. In the absence of intermediate soft annealing, increased demands are placed on the cold rolling process or the upstream hot rolling process, since the pass decreases during cold rolling are limited. The use of a continuous furnace is ultimately associated with at least high acquisition costs.

Ferner ist zur Vermeidung von Fließlinien beim Verformen oder Tiefziehen von Halbzeugen aus der US Patentschrift US 4,151,013 ein Herstellverfahren für Halbzeuge bekannt, bei dem ein Barren aus einer Aluminiumlegierung nach dem Warmwalzen direkt oder nach einem Zwischenglühen mit einer Dickenreduktion von mindestens 40%, zumeist 60% - 80%, zu einem Halbzeug kaltgewalzt wird, anschließend das Halbzeug in einem Durchlaufofen einem Schlussweichglühen unterzogen wird und schließlich um 0,25% bis 1% gereckt wird. Es hat sich jedoch gezeigt, dass mit dem bekannten Verfahren hergestellte Halbzeuge eine sichere Vermeidung von Fließlinien beispielsweise in einem nachfolgenden Tiefziehen nicht gewährleisten.Furthermore, in order to avoid flow lines during the forming or deep drawing of semi-finished products from the US Pat. No. 4,151,013 a manufacturing method for semi-finished products, in which an ingot of an aluminum alloy after hot rolling directly or after an intermediate annealing with a reduction in thickness of at least 40%, usually 60% - 80%, is cold rolled to a semi-finished, then the semi-finished in a continuous furnace annealing and finally stretched by 0.25% to 1%. However, it has been shown that semifinished products produced by the known method do not ensure a reliable avoidance of flow lines, for example in a subsequent deep drawing.

Ausgehend von dem zuvor beschriebenen Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung eines flächigen, gewalzten Halbzeuges aus einer Aluminiumlegierung zur Verfügung zu stellen, welches die Verwendung von Standardlegierungen ohne Zusatz von Zn und Cu oder anderen Elementen ermöglicht, ohne aufwendige Fertigungsanlagen auskommt und eine verbesserte Prozesssicherheit im Hinblick auf eine Fließlinienfreiheit des tiefgezogenen bzw. verformten Endproduktes gewährleistet.Based on the above-described prior art, the present invention has the object to provide a method for producing a flat, rolled semi-finished aluminum alloy, which allows the use of standard alloys without the addition of Zn and Cu or other elements, without elaborate production facilities and ensures improved process reliability in terms of a flow line freedom of the deep-drawn or deformed final product.

Die zuvor hergeleitete und aufgezeigte Aufgabe wird dadurch gelöst, dass das Halbzeug nach dem Schlussweichglühen um 0,1 bis 0,5 % gereckt wird.The previously derived and indicated object is achieved by stretching the semifinished product by 0.1 to 0.5% after the final soft annealing.

Zunächst wird durch einen hohen Umformgrad von mindestens 50% vor dem ersten Zwischenglühen ein grobes Gefüge im Halbzeug erzeugt, so dass die Rekristallisationstemperatur der Aluminiumlegierung herabgesetzt wird und eine möglichst vollständige Rekristallisation des Halbzeuges beim Zwischenglühen stattfindet. Beim anschließenden Kaltwalzen mit einem maximalen Umformgrad von 30% werden nur wenige Fehlstellen in das weiche, rekristallisierte Halbzeug eingebracht, so dass das Halbzeug mit einem feinkörnigen Gefüge dem Schlussweichglühen zugeführt wird. Durch die Kombination der vorangegangen Verarbeitungsschritte mit dem abschließenden Recken und den Eigenschaften der Legierung ist überraschender Weise gewährleistet, dass beim Verformen bzw. Tiefziehen des Halbzeuges keine Fließlinien auftreten. Darüber hinaus weist das erfindungsgemäße Halbzeug eine lange Lagerbeständigkeit von mehreren Jahren auf, während derer sich die Eigenschaften nicht wesentlich verändern. Insbesondere ist es nicht notwendig, eine spezielle Korngröße einzustellen, so dass das Risiko des Auftretens einer Orangenhaut beim Verformen entfällt. Es kann also auch mit Korngrößen unter 50 µm eine Fließlinienfreiheit erzielt werden. Schließlich ist kein Weich- bzw. Lösungsglühen im Durchlaufofen mit nachfolgender Abschreckung notwendig. Zusammenfassend kann gesagt werden, dass der Fertigungsprozess zur Herstellung des erfindungsgemäßen flächigen, gewalzten Halbzeuges eine große Robustheit aufweist.First, by a high degree of deformation of at least 50% before the first intermediate annealing a coarse structure in the semifinished product is generated, so that the Recrystallization temperature of the aluminum alloy is reduced and takes place as complete as possible recrystallization of the semifinished product during the intermediate annealing. In the subsequent cold rolling with a maximum degree of deformation of 30% only a few defects in the soft, recrystallized semi-finished products are introduced, so that the semi-finished product is fed with a fine-grained structure the final soft annealing. The combination of the preceding processing steps with the final stretching and the properties of the alloy surprisingly ensures that no flow lines occur during the shaping or deep-drawing of the semi-finished product. In addition, the semi-finished product according to the invention has a long shelf life of several years, during which the properties do not change significantly. In particular, it is not necessary to set a specific grain size, so that the risk of the appearance of an orange peel during deformation is eliminated. It can thus be achieved with grain sizes below 50 microns flow line freedom. Finally, no soft or solution annealing in a continuous furnace with subsequent deterrence is necessary. In summary, it can be said that the manufacturing process for producing the flat, rolled semi-finished product according to the invention has a high degree of robustness.

Wird das Halbzeug nach dem Schlussweichglühen um mindestens 0,2 % gereckt, wird die Prozesssicherheit bei der Herstellung des erfindungsgemäßen Halbzeuges weiter erhöht.If the semifinished product is stretched by at least 0.2% after final soft annealing, the process reliability during production of the semifinished product according to the invention is further increased.

Das Recken des flächigen, gewalzten Halbzeuges kann auf unterschiedliche Art und Weise erfolgen. Denkbar ist beispielsweise das Recken in einer Bandreckanlage aber auch das Recken mit Hilfe durch wechselweises Umlenken des Bandes bzw. Bleches in einer sogenannten Levelling-Anlage, bei der das Band bei jeder Umlenkung auf dem äußeren Radius gereckt und im inneren Radius gestaucht wird.The stretching of the flat, rolled semi-finished product can be done in different ways. Conceivable, for example, stretching in a strip stretching machine but also stretching with the help of alternate deflection of the strip or sheet in a so-called leveling system, in which the band is stretched at each deflection on the outer radius and compressed in the inner radius.

Weist das Halbzeug eine unter Verwendung des Coil-Coating-Verfahrens nachträglich aufgebrachte Beschichtung auf, so kann durch die damit verbundene Wärmebehandlung die Verformbarkeit des Halbzeuges in nachfolgenden Verformungs- oder Tiefziehschritten verbessert werden, ohne die Fließlinienfreiheit zu beeinträchtigen.If the semifinished product has a subsequently applied coating using the coil coating method, the deformability of the semifinished product in subsequent deformation or deep drawing steps can be improved by the associated heat treatment, without impairing the flow line freedom.

Es gibt nun eine Vielzahl von Möglichkeiten, das Verfahren zur Herstellung eines derartigen flächigen, gewalzten Halbzeuges auszugestalten und weiterzubilden. Hierzu wird beispielsweise auf die nachfolgende Beschreibung in Verbindung mit der Zeichnung verwiesen.There are now a variety of ways to design and develop the method for producing such a flat, rolled semi-finished product. For this purpose, for example, reference is made to the following description in conjunction with the drawings.

In der Zeichnung zeigt die einzige Figur ein Ausführungsbeispiel einer Anlage zur Verwirklichung eines Verfahrens zur Herstellung eines flächigen, gewalzten Halbzeuges aus einer Aluminiumlegierung.In the drawing, the single figure shows an embodiment of a plant for the realization of a method for producing a flat, rolled semi-finished aluminum alloy.

Das Ausführungsbeispiel der Anlage zur Herstellung eines erfindungsgemäßen flächigen, gewalzten Halbzeuges aus einer Aluminiumlegierung, insbesondere eines Halbzeuges zur Herstellung von Karosserieblechen, weist eine Warmwalzstraße 1 mit einem Reversiergerüst 2 und optional einem anschließenden mehrstufigen Warmwalzgerüst 3 auf. In dieser Warmwalzstraße 1 wird ein Barren 4 beispielsweise aus einer Standardlegierung wie AA5052, AA5754 oder AA5182 abgewalzt und anschließend in einer Aufhaspelstation zu einem Coil 5 aufgehaspelt.The embodiment of the plant for producing a flat, rolled semi-finished product according to the invention from an aluminum alloy, in particular a semifinished product for the production of body panels, has a hot rolling mill 1 with a Reversiergerüst 2 and optional a subsequent multi-stage hot rolling stand 3 on. In this hot rolling mill 1, a billet 4 is rolled off, for example, from a standard alloy such as AA5052, AA5754 or AA5182 and then wound up in a coiling station to form a coil 5.

Nach dem Abkühlen des Coils 5 wird das Band auf einer ersten Kaltwalzstraße 6 einem oder mehreren Kaltwalzstichen unterzogen, wobei zur Reduzierung der Rekristallisationstemperatur des Bandes der Umformgrad mindestens 50 % beträgt.After cooling of the coil 5, the strip is subjected to one or more cold rolling passes on a first cold rolling train 6, the degree of forming being at least 50% in order to reduce the recrystallization temperature of the strip.

Bei dem dargestellten Ausführungsbeispiel wird das kaltgewalzte, erneut aufgehaspelte Band in einem Kammerofen 7 zwischenweichgeglüht. Beim Zwischenweichglühen rekristallisiert das relativ grobe Gefüge des Bandes nahezu vollständig, so dass das Band in weichem und rekristallisiertem Zustand nach dem Zwischenglühen vorliegt. Anschließend wird das zwischenweichgeglühte Band auf einer zweiten Kaltwalzstraße 8 erneut einem Kaltwalzen mit einem Umformgrad von höchstens 30 % unterzogen. Durch diese Maßnahme wird nur eine geringe Anzahl von Fehlstellen im Band erzeugt, so dass das Band nach dem letzten Kaltwalzen ein feinkörniges Gefüge aufweist.In the illustrated embodiment, the cold rolled, rewound strip is annealed in a box furnace 7. During intermediate soft annealing, the relatively coarse microstructure of the strip recrystallises almost completely, so that the strip is present in a soft and recrystallized state after the intermediate annealing. Subsequently, the intermediate soft annealed strip on a second cold rolling line 8 again subjected to cold rolling with a degree of deformation of at most 30%. By this measure, only a small number of defects in the band is generated, so that the band has a fine-grained structure after the last cold rolling.

Im Anschluss an den letzten Kaltwalzstich wird das erneut aufgehaspelte Band in einem zweiten Kammerofen 9 einer Schlussweichglühung unterzogen.Following the last cold-rolling pass, the rewound strip is subjected to final soft annealing in a second chamber furnace 9.

Abschließend wird das abgekühlte Band auf einer sogenannten Levelling-Anlage 10 um 0,1 bis 0,5 % gereckt.Finally, the cooled strip is stretched by 0.1 to 0.5% on a so-called leveling system 10.

Statt der Levelling-Anlage 10 kann auch eine Bandreckanlage eingesetzt werden, auf der das Band über seinen gesamten Querschnitt gereckt wird.Instead of the leveling system 10, a strip stretching machine can be used, on which the strip is stretched over its entire cross section.

Claims (1)

  1. A process for manufacturing a flat, rolled semifinished product made from an aluminium alloy, wherein the aluminium alloy includes the following alloy components in percent by weight:
    2 ≤ Mg ≤ 5
    Mn ≤ 0.5
    Cr ≤ 0.35
    Si ≤ 0.4
    Fe ≤ 0.4
    Cu ≤ 0.3
    Zn ≤ 0.3
    Ti ≤ 0.15
    others in total not more than 0.15, individually not more than 0.05, the remainder Al,
    wherein the semifinished product is rolled out from a bar (4) and, in the rolling process, is subjected to at least one intermediate soft annealing stage between two cold-rolling stages and a final soft annealing stage, each in a box furnace (7, 9), the degree of deformation before the first intermediate soft annealing stage being at least 50% and before the final soft annealing stage being no more than 30%,
    characterised in that
    the semifinished product is elongated by 0.1 to 0.5% after the final soft annealing stage.
EP03008147A 2003-04-08 2003-04-08 A flat rolled semi-finished product from an aluminium alloy Expired - Lifetime EP1466992B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SI200330988T SI1466992T1 (en) 2003-04-08 2003-04-08 A flat rolled semi-finished product from an aluminium alloy
PT03008147T PT1466992E (en) 2003-04-08 2003-04-08 A flat rolled semi-finished product from an aluminium alloy
AT03008147T ATE370256T1 (en) 2003-04-08 2003-04-08 FLAT, ROLLED SEMI-PRODUCT MADE OF AN ALUMINUM ALLOY
EP03008147A EP1466992B1 (en) 2003-04-08 2003-04-08 A flat rolled semi-finished product from an aluminium alloy
ES03008147T ES2289201T3 (en) 2003-04-08 2003-04-08 SEMI-ELABORATED PRODUCT LAMINATED FROM AN ALUMINUM ALLOY.
DE50307952T DE50307952D1 (en) 2003-04-08 2003-04-08 Flat, rolled semi-finished aluminum alloy
KR1020057019198A KR100716607B1 (en) 2003-04-08 2004-03-31 Flat, rolled semi-finished product made of an aluminum alloy
PCT/EP2004/003397 WO2004090184A1 (en) 2003-04-08 2004-03-31 Flat, rolled semi-finished product made of an aluminum alloy
US10/551,563 US7846277B2 (en) 2003-04-08 2004-03-31 Planar, rolled semi-finished product of aluminum alloys
JP2006504929A JP2006522868A (en) 2003-04-08 2004-03-31 A method for producing flat rolled semi-finished products made of aluminum alloy.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03008147A EP1466992B1 (en) 2003-04-08 2003-04-08 A flat rolled semi-finished product from an aluminium alloy

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EP1466992A1 EP1466992A1 (en) 2004-10-13
EP1466992B1 true EP1466992B1 (en) 2007-08-15

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US (1) US7846277B2 (en)
EP (1) EP1466992B1 (en)
JP (1) JP2006522868A (en)
KR (1) KR100716607B1 (en)
AT (1) ATE370256T1 (en)
DE (1) DE50307952D1 (en)
ES (1) ES2289201T3 (en)
PT (1) PT1466992E (en)
SI (1) SI1466992T1 (en)
WO (1) WO2004090184A1 (en)

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US7846277B2 (en) 2003-04-08 2010-12-07 Hydro Aluminium Deutschland Gmbh Planar, rolled semi-finished product of aluminum alloys

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US9589246B2 (en) * 2014-06-26 2017-03-07 Ford Global Technologies, Llc Marking the surface of metal coils with material property data
CN108611533B (en) * 2018-06-08 2019-12-03 郑州大学 A kind of aluminium alloy and its preparation process for high-throughput continuous casting and rolling narrow crystallization section
CN111054745A (en) * 2019-11-26 2020-04-24 湖南湘投金天钛金属股份有限公司 Preparation method of TB8 titanium alloy sheet
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ATE370256T1 (en) 2007-09-15
ES2289201T3 (en) 2008-02-01
KR20060018212A (en) 2006-02-28
US20070125465A1 (en) 2007-06-07
WO2004090184A1 (en) 2004-10-21
JP2006522868A (en) 2006-10-05
EP1466992A1 (en) 2004-10-13
PT1466992E (en) 2007-09-12
KR100716607B1 (en) 2007-05-10
US7846277B2 (en) 2010-12-07
DE50307952D1 (en) 2007-09-27
SI1466992T1 (en) 2007-12-31

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