EP0099739B1 - Legierung auf Aluminiumbasis und Verfahren zu ihrer Herstellung - Google Patents

Legierung auf Aluminiumbasis und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0099739B1
EP0099739B1 EP19830304131 EP83304131A EP0099739B1 EP 0099739 B1 EP0099739 B1 EP 0099739B1 EP 19830304131 EP19830304131 EP 19830304131 EP 83304131 A EP83304131 A EP 83304131A EP 0099739 B1 EP0099739 B1 EP 0099739B1
Authority
EP
European Patent Office
Prior art keywords
strip
reduction
thickness
process according
temperature
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
Application number
EP19830304131
Other languages
English (en)
French (fr)
Other versions
EP0099739A2 (de
EP0099739A3 (en
Inventor
Harish D. Merchant
James G. Morris
Edgar Dr. Lossack
Gunther Dr. Scharf
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.)
Crown Beverage Packaging LLC
Original Assignee
Vereinigte Aluminium Werke AG
Continental Can Company USA Inc
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
Priority claimed from US06/483,337 external-priority patent/US4517034A/en
Priority claimed from US06/483,453 external-priority patent/US4526625A/en
Application filed by Vereinigte Aluminium Werke AG, Continental Can Company USA Inc filed Critical Vereinigte Aluminium Werke AG
Priority to AT83304131T priority Critical patent/ATE39132T1/de
Publication of EP0099739A2 publication Critical patent/EP0099739A2/de
Publication of EP0099739A3 publication Critical patent/EP0099739A3/en
Application granted granted Critical
Publication of EP0099739B1 publication Critical patent/EP0099739B1/de
Expired 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
    • 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 thin, e.g. 0.51-2.54 cm (0.2-1.0 inch) solidified cast web is typically reduced in thickness to a gauge of about 0.033 cm (0.130 inch) by cold rolling with an intermediate recrystallization anneal at 316 ⁇ 482°C (600-900°F). Thereafter, as in the manufacture of direct chill ingot cast stock, the thinned, annealed stock is subjected to a final work hardening step by cold rolling to a final gauge of about 0.033 cm (0.013 inch) to produce the H19 temper required for can body manufacture.
  • the present invention relates to a process for the preparation of non-galling, low earing can stock from continuously cast aluminium strip suitable for deep drawing and wall-ironing into hollow articles.
  • the molten aluminium material is cast by continuous strip casting into a web generally of 2.54 cm (one inch) or less in thickness.
  • the strip material is heated to a temperature of from 510 to 621°C (950 to 1150°F) for a time sufficient to homogenize the alloy.
  • the homogenized strip material is cold rolled to effect a first reduction in sheet thickness of at least 25%.
  • the cold rolled sheet is heated to a recovery temperature of from 177°C (350°F) to 288°C (550°F), and subjected to a second cold rolling to effect a reduction in thickness of at least 10%.
  • the cold rolled sheet product is heated to effect recrystallization of the grain structure and then subjected to effect a final reduction in thickness which is at least about 50% and is preferably at least 75% of the original thickness of the sheet to impart an H19 temper to the sheet.
  • Temperature of the web is raised from 566 to 593°C (1050 to 1100°F) over a 5 hour period.
  • Web is homogenized at 593 ⁇ 5.5°C (1100 ⁇ 10°F) for 20 hours.
  • continuous cast 3004 aluminium alloy strip cold rolled and size-reduced to 0.034 cm (0.0135 inch) gauge to H-19 temper by conventional practice typically has an intermetallic particle size in the order of 0.3-0.7 microns.
  • this strip when subjected to ironing operations encounters severe galling.
  • the inter-metallic particle size increases with increasing homogenization temperature which results in a proportionate decrease in galling when the homogenized strip is subjected to wall-ironing conditions.
  • the web may be cooled to room temperature between the second recovery heating step and the recrystallization step.
  • the recrystallization heating is carried out without prior cooling to room temperature by direct heating from the second recovery temperature to the recrystallization temperature.
  • the cooled strips were rolled in successive passes using a commercial rolling mill until the strip was reduced to varying degrees of thickness ranging from 66 to 75% (0.41 to 0.30 cm) (0.160 to 0.120 inch).
  • Cold roll/anneal cycle 6 which is identical to cycle 5, except that a second cold roll reduction of 25% is used instead of 10%, produces a reduction in earing, but the reduction achieved is less than that achieved using cycle 5, indicating that a second cold roll reduction of 10% is more advantageous in effecting a reduction in earing.
  • cycle 8 produces a reduction in earing when compared to control cycle C 3 , but does not provide an advantage over cycle 5 which utilizes only one recrystallization heating.
  • the strips were subjected to a second recovery heating at 260°C (500°?) for one hour and then heated to recrystallization temperature of 427°C (800°F) for 2 hours.
  • the first series of cold roll recovery-recrystallization heatings was varied whereby in a first variation the second cold reduction was eliminated and recrystallization carried out immediately after the first recovery heating. In a second variation, the recovery heating was eliminated and recrystallization was carried out immediately after the cold reduction.
  • the H19 tempered strips were examined under a scanning electron microscope in the back scattering mode and found to have an intermetallic particle size in the 1 to 3 microns range, indicating that no galling would occur when the strips were subjected to the wall-ironing conditions of can making.
  • the tensile ultimate strength, along with the tensile total elongation, is a measure of sheet formability. To be suitable for can body manufacture, the sheet must have a tensile ultimate strength of at least 289x10 6 N/m 2 (42,000 psi).

Claims (17)

1. Verfahren zur Herstellung von Streifenmaterial aus Aluminiumlegierung, das sich für die Fertigung von Gegenständen im Abstrecktiefziehverfahren eignet, wobei das Verfahren folgende Schritte umfaßt: Stranggießen einer Aluminiumlegierung in Streifenform; Diffusionsglühen des Legierungsstreifens; und anschließend Kaltwalzen des diffusionsgeglühten Streifens; dadurch gekennzeichnet, daß der stranggegossene Streifen eine Dicke von bis zu 2,54 cm (1 Zoll) aufweist; daß der Schritt des Diffusionsglühens bei einer Temperatur von 510-621°C (950-1150°F) über einen Zeitraum bis zu 50 Stunden durchgeführt wird; daß der Schritt des Kaltwalzens derart ausgeführt wird, daß sich eine Reduzierung der Dicke um mindstens 25% ergibt; und daß daraufhin der kaltgewalzte Streifen auf eine Erholungsglühtemperatur von 177-288°C (350-550°F) erhitzt wird; daß der Streifen bis zu einer zweiten Reduzierung der Dicke um mindestens 10% kaltgewalzt wird, daß der kaltgewalzte Streifen auf eine Rekristallisationstemperatur von 316-482°C (600-900°F) erhitzt wird; und daß sodann der rekristallisierte Streifen auf ein Endmaß mit einer Gesamtreduzierung der Dicke von mindestens ca. 50% kaltgewalzt wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der stranggegossene Aluminiumstreifen eine Dicke von 0,635-1,27 cm (0,25-0,50 Zoll) aufweist.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Streifen bei einer Temperatur von 537-593°C (1000-1100°F) zwischen 10 und 25 Stunden diffusionsgeglüht wird.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der erste Kaltwalzvorgang eine Reduzierung der Dicke von 50-75% bewirkt.
5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Streifen auf eine Erholungsglühtemperatur von 204-246°C (400-475°F) zwischen 2 und 6 Stunden erhitzt wird.
6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Streifen auf eine Erholungsglühtemperatur von 218-246°C (425―475°F) zwischen 2 und 4 Stunden erhitzt wird.
7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der kaltgewalzte Streifen auf eine Rekristallisationstemperatur von 371-454°C (700-8500F) zwischen 2 und 3 Stunden erhitzt wird.
8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Kaltwalzvorgang eine Reduzierung der Dicke von 10-25% bewirkt.
9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Streifen auf eine zweite Erholungsglühtemperatur nach dem zweiten Kaltwalzvorgang und vor dem Erhitzen des Streifens auf die Rekristallisationstemperatur erhitzt wird, wobei die zweite Erholungsglühtemperatur im Bereich zwischen 232 und 288°C (450 und 550°F) liegt und die Erhitzung zwischen 0,5 und 3 Stunden lang durchgeführt wird.
10. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der rekristallisierte Streifen auf ein Endmaß mit einer Gesamtreduzierung der Dicke von 85-90% kaltgewalzt wird.
11. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Aluminiumlegierung eine Legierung gemäß der Aluminium-Association-Norm 3004 ist.
12. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Aluminiumlegierung im Gewichtsanteil von 0,5 bis 1,5 Magnesium, von 0,5 bis 1,5% Mangan, von 0,1 bis 1,0% Eisen, von 0,1 bis 0,5% Silizium, von 0,0 bis 0,25% Zink, von 0,0 bis 0,25% Kupfer und von 0,10 bis 0,4% Chrom enthält.
13. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der kaltgewalzte Streifen vor dem Rekristallisationsvorgang auf eine Erholungsglühtemperatur von 177 bis 288°C (350 bis 550°F) über einen Zeitraum von mindestens 2 Stunden erhitzt und sodann bis zu einer zweiten Reduzierung der Dicke von mindestens 10% kaltgewalzt wird.
14. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der erste Kaltwalzvorgang eine Reduzierung der Dicke von 50 bis 85% bewirkt.
15. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Kaltwalzvorgang eine Reduzierung der Dicke von 10 bis 50% bewirkt.
16. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der rekristallisierte Streifen auf ein Endmaß mit einer Gesamtreduzierung der Dicke von 50 bis 90% kaltgewalzt wird.
17. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß das in die Legierung 3004 eingebrachte Chrom einen Gewichtsanteil von 0,11 bis 0,25% cinnimmt.
EP19830304131 1982-07-15 1983-07-15 Legierung auf Aluminiumbasis und Verfahren zu ihrer Herstellung Expired EP0099739B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83304131T ATE39132T1 (de) 1982-07-15 1983-07-15 Legierung auf aluminiumbasis und verfahren zu ihrer herstellung.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US39873482A 1982-07-15 1982-07-15
US39873582A 1982-07-15 1982-07-15
US398734 1982-07-15
US483453 1983-04-08
US06/483,337 US4517034A (en) 1982-07-15 1983-04-08 Strip cast aluminum alloy suitable for can making
US06/483,453 US4526625A (en) 1982-07-15 1983-04-08 Process for the manufacture of continuous strip cast aluminum alloy suitable for can making
US483337 1983-04-08
US398735 1999-09-17

Publications (3)

Publication Number Publication Date
EP0099739A2 EP0099739A2 (de) 1984-02-01
EP0099739A3 EP0099739A3 (en) 1985-05-08
EP0099739B1 true EP0099739B1 (de) 1988-12-07

Family

ID=27503424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830304131 Expired EP0099739B1 (de) 1982-07-15 1983-07-15 Legierung auf Aluminiumbasis und Verfahren zu ihrer Herstellung

Country Status (10)

Country Link
EP (1) EP0099739B1 (de)
AR (1) AR231408A1 (de)
AU (1) AU557719B2 (de)
BR (1) BR8303778A (de)
DE (1) DE3378640D1 (de)
DK (1) DK324383A (de)
ES (1) ES8501003A1 (de)
GB (2) GB2123319B (de)
NO (1) NO165349C (de)
PT (1) PT77030B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976790A (en) * 1989-02-24 1990-12-11 Golden Aluminum Company Process for preparing low earing aluminum alloy strip
US5616189A (en) * 1993-07-28 1997-04-01 Alcan International Limited Aluminum alloys and process for making aluminum alloy sheet
US6120621A (en) * 1996-07-08 2000-09-19 Alcan International Limited Cast aluminum alloy for can stock and process for producing the alloy
WO1998035069A1 (en) * 1997-02-05 1998-08-13 Alcan International Limited A process of reducing roping in automotive sheet products
US7304150B1 (en) 1998-10-23 2007-12-04 Amgen Inc. Methods and compositions for the prevention and treatment of anemia
JP3913260B1 (ja) * 2005-11-02 2007-05-09 株式会社神戸製鋼所 ネック部成形性に優れたボトル缶用アルミニウム合金冷延板
EP2822717A4 (de) * 2012-03-07 2016-03-09 Alcoa Inc Verbesserte 6xxx-aluminiumlegierungen und verfahren zur herstellung davon
BR112016024729B1 (pt) * 2014-04-30 2021-04-06 Alcoa Usa Corp. Método de fabricação de recipiente de alumínio
CN114055089A (zh) * 2021-11-23 2022-02-18 镇江龙源铝业有限公司 一种动力电池盖板用铝带的制备方法
CN115634928B (zh) * 2022-12-05 2023-03-17 中国航发北京航空材料研究院 一种提高航空用超宽超厚铝合金板材综合性能的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787248A (en) * 1972-09-25 1974-01-22 H Cheskis Process for preparing aluminum alloys
US4111721A (en) * 1976-06-14 1978-09-05 American Can Company Strip cast aluminum heat treatment
DE2810188A1 (de) * 1978-03-09 1979-09-13 Metallgesellschaft Ag Verfahren zur weiterbehandlung von aus einer aluminium-mangan-legierung hergestellten blechen und baendern
US4235646A (en) * 1978-08-04 1980-11-25 Swiss Aluminium Ltd. Continuous strip casting of aluminum alloy from scrap aluminum for container components
DE2929724C2 (de) * 1978-08-04 1985-12-05 Coors Container Co., Golden, Col. Verfahren zum Herstellen eines Bandes aus einer Aluminiumlegierung für Dosen und Deckel

Also Published As

Publication number Publication date
AU557719B2 (en) 1987-01-08
NO165349B (no) 1990-10-22
GB2172303B (en) 1987-03-25
ES524111A0 (es) 1984-11-01
PT77030A (en) 1983-08-01
BR8303778A (pt) 1984-02-21
DK324383A (da) 1984-01-16
PT77030B (en) 1986-01-24
GB2123319A (en) 1984-02-01
AU1687583A (en) 1984-01-19
GB2172303A (en) 1986-09-17
NO165349C (no) 1991-01-30
GB8519274D0 (en) 1985-09-04
DE3378640D1 (en) 1989-01-12
NO832560L (no) 1984-01-16
DK324383D0 (da) 1983-07-14
EP0099739A2 (de) 1984-02-01
EP0099739A3 (en) 1985-05-08
ES8501003A1 (es) 1984-11-01
GB8319199D0 (en) 1983-08-17
AR231408A1 (es) 1984-11-30
GB2123319B (en) 1987-03-25

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