EP0548007A1 - Car body sheet - Google Patents

Car body sheet Download PDF

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Publication number
EP0548007A1
EP0548007A1 EP92810917A EP92810917A EP0548007A1 EP 0548007 A1 EP0548007 A1 EP 0548007A1 EP 92810917 A EP92810917 A EP 92810917A EP 92810917 A EP92810917 A EP 92810917A EP 0548007 A1 EP0548007 A1 EP 0548007A1
Authority
EP
European Patent Office
Prior art keywords
max
alloy
body panel
car body
body sheet
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Withdrawn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
EP92810917A
Other languages
German (de)
French (fr)
Inventor
Pierre Millet
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
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 Alusuisse Lonza Services Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0548007A1 publication Critical patent/EP0548007A1/en
Withdrawn legal-status Critical Current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
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon

Definitions

  • the invention relates to a body panel, in particular for the outer skin of passenger cars, made of an alloy of the AIMgSi type.
  • AIMgSi alloys for body panels in automobile construction is known, for example, from US-A-4,082,578 and US-A-4,589,932.
  • the alloys also contain significant amounts of copper and manganese.
  • the AA6063 alloy which can also be hardened and welded, is widely used for extruded products.
  • the inventor has set itself the goal of creating a body panel of the type mentioned at the outset which fulfills the requirements mentioned above and, moreover, can be produced more cost-effectively than the customary AIMgSi body panels.
  • the alloy has 0.2 to 0.6% Si, 0.4 to 0.9% Mg, max. 0.35% Fe, max. 0.1% Cu, max. 0.1 Mn, max. 0.1 Cr, max. 0.1% Zn, max. 0.1% Ti and other elements individually up to max. 0.05%, total max. 0.15%, and aluminum as the rest.
  • All salary data are in% by weight.
  • the preferred content range is 0.45 to 0.55% for Si and 0.55 to 0.65% for Mg.
  • Fe, Cu and Cr are expediently limited as follows: Fe 0.15 to 0.25%, Cu max. 0.05%, Cr max. 0.05%.
  • the alloy according to the invention can be processed according to the process steps known for AIMgSi alloys by hot and cold rolling into sheets with subsequent cold and / or hot hardening.
  • the alloy according to the invention has somewhat lower mechanical strength values, but surprisingly hardens at lower temperatures than the correspondingly higher-alloyed alloys according to the prior art.
  • the forming properties of sheets made from the alloy according to the invention are no worse than the optimized forming properties of the body panels according to the prior art.

Abstract

A car body sheet, in particular for the outer skin of passenger cars, consists of an alloy of the AlMgSi type. The alloy contains 0.2 to 0.6% of Si, 0.4 to 0.9% of Mg, at most 0.35% of Fe, at most 0.1% of Cu, at most 0.1% of Mn, at most 0.1% of Cr, at most 0.1% of Zn, at most 0.1% of Ti and further elements individually up to at most 0.05%, in total at most 0.15%, the remainder being aluminium.

Description

Die Erfindung betrifft ein Karosserieblech, insbesondere für die Aussenhaut von Personenkraftwagen, aus einer Legierung des Typs AIMgSi.The invention relates to a body panel, in particular for the outer skin of passenger cars, made of an alloy of the AIMgSi type.

Die Verwendung aushärtbarer AIMgSi-Legierungen für Karosseriebleche im Automobilbau ist beispielsweise aus US-A-4,082,578 und US-A-4,589,932 bekannt. Die Legierungen weisen nebst einem verhältnismässig hohen Gehalt an Silizium und Magnesium zusätzlich wesentliche Mengen an Kupfer und Mangan auf.The use of hardenable AIMgSi alloys for body panels in automobile construction is known, for example, from US-A-4,082,578 and US-A-4,589,932. In addition to a relatively high silicon and magnesium content, the alloys also contain significant amounts of copper and manganese.

Für Strangpressprodukte ist die ebenfalls aushärtbare und gut schweissbare Legierung AA6063 weit verbreitet.The AA6063 alloy, which can also be hardened and welded, is widely used for extruded products.

Im Hinblick auf die Schweissbarkeit und die Rezyklierbarkeit von sogenannten Space Frame Strukturen im Automobilbau wäre es wünschenswert, die stranggepressten Rahmenteile und die Karosseriebleche aus derselben Legierung fertigen zu können. Zudem sollte die Legierung auch bei tiefen Lackeinbrenntemperaturen noch gut aushärten.With regard to the weldability and the recyclability of so-called space frame structures in automobile construction, it would be desirable to be able to manufacture the extruded frame parts and the body panels from the same alloy. In addition, the alloy should also harden well at low paint baking temperatures.

Angesichts dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, ein Karosserieblech der eingangs erwähnten Art zu schaffen, welches die vorstehend genannten Anforderungen erfüllt und überdies kostengünstiger als die üblichen AIMgSi-Karosseriebleche hergestellt werden kann.In view of these circumstances, the inventor has set itself the goal of creating a body panel of the type mentioned at the outset which fulfills the requirements mentioned above and, moreover, can be produced more cost-effectively than the customary AIMgSi body panels.

Zur erfindungsgemässen Lösung der Aufgabe führt, dass die Legierung 0,2 bis 0,6 % Si, 0,4 bis 0,9 % Mg, max. 0,35 % Fe, max. 0,1 % Cu, max. 0,1 Mn, max. 0,1 Cr, max. 0,1 % Zn, max. 0,1 % Ti und weitere Elemente einzeln bis max. 0,05 %, insgesamt max. 0,15 %, sowie Aluminium als Rest enthält.To achieve the object according to the invention, the alloy has 0.2 to 0.6% Si, 0.4 to 0.9% Mg, max. 0.35% Fe, max. 0.1% Cu, max. 0.1 Mn, max. 0.1 Cr, max. 0.1% Zn, max. 0.1% Ti and other elements individually up to max. 0.05%, total max. 0.15%, and aluminum as the rest.

Sämtliche Gehaltsangaben sind in Gew.-%. Der bevorzugte Gehaltsbereich beträgt für Si 0,45 bis 0,55 %, für Mg 0,55 bis 0,65 %.All salary data are in% by weight. The preferred content range is 0.45 to 0.55% for Si and 0.55 to 0.65% for Mg.

Die Elemente Fe, Cu und Crwerden zweckmässigerweise wie folgt beschränkt: Fe 0,15 bis 0,25 %, Cu max. 0,05 %, Cr max. 0,05 %.The elements Fe, Cu and Cr are expediently limited as follows: Fe 0.15 to 0.25%, Cu max. 0.05%, Cr max. 0.05%.

Die erfindungsgemässe Legierung kann entsprechend den für AIMgSi-Legierungen bekannten Verfahrensschritten durch Warm- und Kaltwalzen zu Blechen mit nachfolgender Kalt- und/oder Warmaushärtung verarbeitet werden.The alloy according to the invention can be processed according to the process steps known for AIMgSi alloys by hot and cold rolling into sheets with subsequent cold and / or hot hardening.

Gegenüber den heute zur Herstellung von Karosserieblechen üblicherweise eingesetzten Legierungen weist die erfindungsgemässe Legierung zwar etwas kleinere mechanische Festigkeitswerte auf, härtet jedoch überraschenderweise bei tieferen Temperaturen als die entsprechend höher gattierten Legierungen nach dem Stand der Technik. Ebenso überraschend ist die Tatsache, dass die Umformeigenschaften von aus der erfindungsgemässen Legierung hergestellten Blechen nicht schlechter sind als die optimierten Umformeigenschaften der Karosseriebleche nach dem Stand der Technik.Compared to the alloys commonly used today for the production of body panels, the alloy according to the invention has somewhat lower mechanical strength values, but surprisingly hardens at lower temperatures than the correspondingly higher-alloyed alloys according to the prior art. Just as surprising is the fact that the forming properties of sheets made from the alloy according to the invention are no worse than the optimized forming properties of the body panels according to the prior art.

Claims (6)

1. Karosserieblech, insbesondere für die Aussenhaut von Personenkraftwagen, aus einer Legierung des Typs AIMgSi,
dadurch gekennzeichnet,
dass die Legierung 0,2 bis 0,6 % Si, 0,4 bis 0,9 % Mg, max. 0,35 % Fe, max. 0,1 % Cu, max. 0,1 % Mn, max. 0,1 % Cr, max. 0,1 % Zn, max. 0,1 % Ti
und weitere Elemente einzeln bis max. 0,05 %, insgesamt max. 0,15 %, sowie Aluminium als Rest enthält.1. body panel, in particular for the outer skin of passenger cars, made of an alloy of the AIMgSi type,
characterized,
that the alloy 0.2 to 0.6% Si, 0.4 to 0.9% Mg, Max. 0.35% Fe, Max. 0.1% Cu, Max. 0.1% Mn, Max. 0.1% Cr, Max. 0.1% Zn, Max. 0.1% Ti
and other elements individually up to max. 0.05%, total max. 0.15% and aluminum as the rest. 2. Karosserieblech nach Anspruch 1, dadurch gekennzeichnet, dass die Legierung 0,45 bis 0,55 % Si enthält.2. body panel according to claim 1, characterized in that the alloy contains 0.45 to 0.55% Si. 3. Karosserieblech nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Legierung 0,55 bis 0,65 % Mg. enthält.3. body panel according to claim 1 or 2, characterized in that the alloy contains 0.55 to 0.65% Mg. 4. Karosserieblech nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Legierung 0,15 bis 0,25 % Fe enthält.4. body panel according to one of claims 1 to 3, characterized in that the alloy contains 0.15 to 0.25% Fe. 5. Karosserieblech nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Legierung max. 0,05 % Cu enthält.5. body panel according to one of claims 1 to 4, characterized in that the alloy max. Contains 0.05% Cu. 6. Karosserieblech nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Legierung max. 0,05 % Cr enthält.6. body panel according to one of claims 1 to 5, characterized in that the alloy max. Contains 0.05% Cr.
EP92810917A 1991-12-16 1992-11-26 Car body sheet Withdrawn EP0548007A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3712/91A CH685707A5 (en) 1991-12-16 1991-12-16 Body panel.
CH3712/91 1991-12-16

Publications (1)

Publication Number Publication Date
EP0548007A1 true EP0548007A1 (en) 1993-06-23

Family

ID=4261892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810917A Withdrawn EP0548007A1 (en) 1991-12-16 1992-11-26 Car body sheet

Country Status (2)

Country Link
EP (1) EP0548007A1 (en)
CH (1) CH685707A5 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995014113A1 (en) * 1993-11-17 1995-05-26 Pechiney Rhenalu Aluminium-silicon-magnesium alloy having improved ductility and deep-drawing properties, and method for producing same
EP0714993A1 (en) * 1994-11-29 1996-06-05 Alusuisse-Lonza Services AG Deep drawable and weldable AlMgSi type aluminium alloy
EP0811700A1 (en) * 1996-06-04 1997-12-10 Alusuisse Technology & Management AG Deep drawable and weldable AlMgSi type aluminium alloy
EP0851942B1 (en) * 1995-09-19 2002-04-17 Alcan International Limited Use of rolled aluminum alloys for structural comonents of vehicles
CN102776425A (en) * 2011-05-12 2012-11-14 张家港市金邦铝业有限公司 Aluminum alloy
CN109536793A (en) * 2018-11-21 2019-03-29 安徽鑫铂铝业股份有限公司 A kind of alkaline-resisting antioxidation aluminium profile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082578A (en) * 1976-08-05 1978-04-04 Aluminum Company Of America Aluminum structural members for vehicles
EP0132650A1 (en) * 1983-07-19 1985-02-13 ALUMINIA S.p.A. Aluminium alloy for structural shaped elements of vehicles and process for manufacturing said elements
EP0257957A1 (en) * 1986-08-18 1988-03-02 Fuji Photo Film Co., Ltd. Aluminium alloy support for lithography, process for producing thereof and lithographic printing plate using the same
US4808247A (en) * 1986-02-21 1989-02-28 Sky Aluminium Co., Ltd. Production process for aluminum-alloy rolled sheet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61272342A (en) * 1985-05-27 1986-12-02 Kobe Steel Ltd Aluminum alloy sheet excelling in formability and baking hardening and its production
JPS62207851A (en) * 1986-03-10 1987-09-12 Sky Alum Co Ltd Rolled aluminum alloy sheet for forming and its production
JP2996251B2 (en) * 1988-10-31 1999-12-27 本田技研工業株式会社 Rolled aluminum alloy sheet for forming and method of manufacturing the same
JP2613466B2 (en) * 1989-02-06 1997-05-28 株式会社神戸製鋼所 Manufacturing method of aluminum alloy sheet excellent in bake hardenability
JPH036348A (en) * 1989-06-03 1991-01-11 Kobe Steel Ltd Aluminum alloy for automobile panel excellent in chemical conversion treating property and its production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082578A (en) * 1976-08-05 1978-04-04 Aluminum Company Of America Aluminum structural members for vehicles
EP0132650A1 (en) * 1983-07-19 1985-02-13 ALUMINIA S.p.A. Aluminium alloy for structural shaped elements of vehicles and process for manufacturing said elements
US4808247A (en) * 1986-02-21 1989-02-28 Sky Aluminium Co., Ltd. Production process for aluminum-alloy rolled sheet
EP0257957A1 (en) * 1986-08-18 1988-03-02 Fuji Photo Film Co., Ltd. Aluminium alloy support for lithography, process for producing thereof and lithographic printing plate using the same

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Derwent Publications Ltd., London, GB; Class M, AN 1987-295870 & JP-A-62 207 851 (SKY ALUMINIUM KK) 9. Dezember 1987 *
DATABASE WPI Section Ch, Derwent Publications Ltd., London, GB; Class M, AN 1990-188453 & JP-A-02 122 045 (HONDA MOTOR IND KK) 5. September 1990 *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 136 (C-419)30. April 1987 & JP-A-61 272 342 ( KOBE STEEL LTD ) 2. Dezember 1986 *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 497 (C-774)30. Oktober 1990 & JP-A-02 205 660 ( KOBE STEEL LTD ) 15. August 1990 *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 123 (C-816)26. März 1991 & JP-A-03 006 348 ( KOBE STEEL LTD ) 11. Januar 1991 *
REVUE DE L'ALUMINIUM. Nr. 446, Dezember 1975, PARIS FR Seiten 563 - 570 D.FERTON ET AL 'EMPLOI DE L'ALUMINIUM DANS LES STRUCTURES ABSORBANT LES CHOCS' *
W. HUFNAGEL 'ALUMINIUM-TASCHENBUCH' 1986 , ALUMINIUM VERLAG , DUESSELDORF, DE *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995014113A1 (en) * 1993-11-17 1995-05-26 Pechiney Rhenalu Aluminium-silicon-magnesium alloy having improved ductility and deep-drawing properties, and method for producing same
FR2713664A1 (en) * 1993-11-17 1995-06-16 Pechiney Rhenalu Al-Si-Mg type alloy with improved ductility and drawability and method of production.
EP0714993A1 (en) * 1994-11-29 1996-06-05 Alusuisse-Lonza Services AG Deep drawable and weldable AlMgSi type aluminium alloy
CH688379A5 (en) * 1994-11-29 1997-08-29 Alusuisse Lonza Services Ag Thermaformed and weldable aluminum alloy of the AlMgSi type
EP0851942B1 (en) * 1995-09-19 2002-04-17 Alcan International Limited Use of rolled aluminum alloys for structural comonents of vehicles
EP0811700A1 (en) * 1996-06-04 1997-12-10 Alusuisse Technology & Management AG Deep drawable and weldable AlMgSi type aluminium alloy
CH690916A5 (en) * 1996-06-04 2001-02-28 Alusuisse Tech & Man Ag Thermaformed and weldable aluminum alloy of the AlMgSi type.
CN102776425A (en) * 2011-05-12 2012-11-14 张家港市金邦铝业有限公司 Aluminum alloy
CN109536793A (en) * 2018-11-21 2019-03-29 安徽鑫铂铝业股份有限公司 A kind of alkaline-resisting antioxidation aluminium profile

Also Published As

Publication number Publication date
CH685707A5 (en) 1995-09-15

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