EP0094328B1 - Verfahren zur Herstellung von ziehfähigen Produkten aus Aluminiumlegierungen - Google Patents

Verfahren zur Herstellung von ziehfähigen Produkten aus Aluminiumlegierungen Download PDF

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Publication number
EP0094328B1
EP0094328B1 EP83420075A EP83420075A EP0094328B1 EP 0094328 B1 EP0094328 B1 EP 0094328B1 EP 83420075 A EP83420075 A EP 83420075A EP 83420075 A EP83420075 A EP 83420075A EP 0094328 B1 EP0094328 B1 EP 0094328B1
Authority
EP
European Patent Office
Prior art keywords
strip
temperature
aluminium alloy
carried out
galling
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
EP83420075A
Other languages
English (en)
French (fr)
Other versions
EP0094328A1 (de
Inventor
François-Régis Boutin
Jan Kubie
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.)
Cegedur Societe de Transformation de lAluminium Pechiney SA
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
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 Cegedur Societe de Transformation de lAluminium Pechiney SA filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Publication of EP0094328A1 publication Critical patent/EP0094328A1/de
Application granted granted Critical
Publication of EP0094328B1 publication Critical patent/EP0094328B1/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 present invention relates to a process for manufacturing aluminum alloy products suitable for drawing and which applies more particularly to the strips obtained by casting between rolls.
  • This strip turns out to be particularly advantageous for the production by deep drawing and drawing, of boxes intended in particular for packaging drinks. For this, it is brought to a thickness close to 300 ⁇ m by cold or hot rolling, in several passes which can be separated by intermediate annealing operations, then circular discs are cut from the sheet thus obtained and they are cut. submits to the combined action of a punch and a die, which causes by stamping the formation of a bucket whose walls surround the piston. This bucket then undergoes a dimensional transformation in a so-called stretching operation during which its walls are thinned.
  • USP 4111 721 also notes this galling phenomenon on sheets of 3004 and 3003 and also admits that it is necessary to increase the particle size of AI-Mn and AI-Mn-Fe to remove it. However, to achieve this, it does not intervene at the level of the composition but teaches a heat treatment carried out preferably at a temperature of 620 ° C., for a time interval between 16 and 24 hours, treatment which can be carried out either on the raw casting strip, ie on the strip having already undergone a first series of rolling passes.
  • the raw casting strip had to be heated in air at a temperature between 520 and 550 ° C for a few hours to find anti-galling properties.
  • the Applicant has succeeded in solving the problems of galling and irregularity in coloring and gloss by operating from 'a classic 3004 and under the usual conditions of heat treatment.
  • the invention therefore consists of a process for manufacturing sheets of aluminum alloy suitable for drawing, in which the alloy is cast between cylinders so as to form a strip which is heat treated, rolled to a thickness similar to 300 ktm during a series of passes which can be separated by annealing operations, so as to lead to a sheet in which discs are cut which are subjected to drawing and drawing, characterized in that the surface the strip is mechanically cleaned and then modified by air heat treatment, either between 520 and 550 ° C for 4 to 8 hours on the wound strip, or between 600 and 620 ° C for 1 to 10 minutes at the outlet of the casting machine.
  • the new means implemented firstly include mechanical cleaning of the strip and, preferably, continuously. It can be carried out using any known device which essentially eliminates the particles deposited on the surface of the strip and the thick oxide layer formed during casting, while limiting the thickness of metal removed to a minimum.
  • This cleaning can be carried out on parade, preferably by brushing using a brush with metallic or composite bristles (for example nylon plus tungsten carbide) driven by a rotational movement. Brushing can be done in the running direction of the strip, using a fixed cylindrical brush, the length of which is slightly greater than the width of the strip and the axis of which is perpendicular to this direction.
  • the cleaning can also be carried out on the strip having already undergone a rolling pass when its thickness is close to 2.7 mm.
  • Cleaning can be carried out on one or both sides depending on the destination of the product. In the case of boxing products, only the cleaning of the face which will form the outside of the box is necessary.
  • an anti-galling layer is reformed on the surface of the strip by a heat treatment at high temperature in the air.
  • This operation is carried out by heating the coil formed by the cleaned strip and wound at the outlet of the casting machine, in air, at a temperature between 520 and 550 ° C for 4 to 8 hours.
  • a strip, heated to a lower temperature or for a shorter period, is just as sensitive to galling during stretching as a raw cleaning strip.
  • the heating is carried out at a temperature above 560 ° C., the results are excellent from the galling point of view, but there is then formed on the strip a brown layer which results, at the level of the drawn and drawn products, by surface irregularities such as a more or less shiny and more or less brownish appearance, the unsightly effect of which results in the disposal of the box thus obtained.
  • the modification of the surface of the strip by heat treatment can also be carried out continuously on passing, at the outlet of the casting machine after brushing. Under these conditions, the heating time being necessarily short and of the order of 1 to 10 minutes, unless there are very long passage ovens, the treatment temperature must be higher and between 600 and 620 ° C. to make a suitable modification of the surface.
  • This treatment is preferably carried out in an electric oven, but it is also possible to use a flame oven or an oven with controlled atmosphere.
  • the treatment is optimized as a function of the type of oven, its more or less humid atmosphere and the composition of the alloy treated, in particular as regards its magnesium and manganese content.
  • alloy 3004 This process therefore does not only apply to alloy 3004 and the results of this invention have been verified and confirmed with alloys richer than the latter in magnesium, which contained, for example, 0.8% Mn and 2% Mg, or less rich in magnesium, for example, with an Mn content of 1.5% and an Mg content of 0.5%.
  • this treatment in an oxidizing atmosphere can, for certain alloys, contribute to the homogenization effect sought to improve the mechanical characteristics.
  • the strip covered with the deposit caused by the heating is then subjected to the rolling operations to bring it to the state of sheets with a thickness close to 300 wm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Metal Rolling (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Powder Metallurgy (AREA)

Claims (2)

1. Verfahren zur Herstellung von ziehfähigen Folien aus, Aluminiumlegierung, bei dem die Legierung zwischen Walzen zur Bildung eines Bandes gegossen word, das bis zu einer Dicke nahe 300 p.m im Lauf einer Folge von gegebenenfalls durch Glühvorgänge getrennten Stichen bis zum Erkalten einer Folie gewalzt wird, aus der man Scheiben ausstanzt, die einem Tiefziehen und einem Recken unterworfen werden, dadurch gekennzeichnet, daß die Oberfläche des Bandes mechanisch gereinigt und durch Wärmebehandlung an der Luft entweder bei aufgerolltem Band 4 bis 8 h im Bereich von 520 bis 550 °C oder am Ausgang der Gießeinrichtung 1 bis 10 min. im Bereich von 600 bis 620 °C vergütet wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die mechanische Reinigung mittels Bürsten mit Metall- oder Verbundmaterialborsten durchgeführt wird.
EP83420075A 1982-04-30 1983-04-29 Verfahren zur Herstellung von ziehfähigen Produkten aus Aluminiumlegierungen Expired EP0094328B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8207924 1982-04-30
FR8207924A FR2526047A1 (fr) 1982-04-30 1982-04-30 Procede de fabrication de produits en alliage d'aluminium aptes a l'etirage

Publications (2)

Publication Number Publication Date
EP0094328A1 EP0094328A1 (de) 1983-11-16
EP0094328B1 true EP0094328B1 (de) 1985-10-09

Family

ID=9273809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83420075A Expired EP0094328B1 (de) 1982-04-30 1983-04-29 Verfahren zur Herstellung von ziehfähigen Produkten aus Aluminiumlegierungen

Country Status (19)

Country Link
US (1) US4441933A (de)
EP (1) EP0094328B1 (de)
JP (1) JPS58199854A (de)
AR (1) AR231151A1 (de)
AU (1) AU550513B2 (de)
BR (1) BR8302222A (de)
CA (1) CA1203068A (de)
DE (1) DE3360967D1 (de)
ES (1) ES521949A0 (de)
FR (1) FR2526047A1 (de)
GB (1) GB2119294B (de)
GR (1) GR71597B (de)
IN (1) IN159293B (de)
MA (1) MA19784A1 (de)
MY (1) MY8600318A (de)
NO (1) NO831516L (de)
PH (1) PH18237A (de)
SU (1) SU1306484A3 (de)
TR (1) TR21513A (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5681405A (en) 1995-03-09 1997-10-28 Golden Aluminum Company Method for making an improved aluminum alloy sheet product
US6344096B1 (en) 1995-05-11 2002-02-05 Alcoa Inc. Method of producing aluminum alloy sheet for automotive applications
US5714019A (en) * 1995-06-26 1998-02-03 Aluminum Company Of America Method of making aluminum can body stock and end stock from roll cast stock
US5993573A (en) * 1997-06-04 1999-11-30 Golden Aluminum Company Continuously annealed aluminum alloys and process for making same
US5976279A (en) * 1997-06-04 1999-11-02 Golden Aluminum Company For heat treatable aluminum alloys and treatment process for making same
US5985058A (en) * 1997-06-04 1999-11-16 Golden Aluminum Company Heat treatment process for aluminum alloys
US6579387B1 (en) 1997-06-04 2003-06-17 Nichols Aluminum - Golden, Inc. Continuous casting process for producing aluminum alloys having low earing
US20030173003A1 (en) * 1997-07-11 2003-09-18 Golden Aluminum Company Continuous casting process for producing aluminum alloys having low earing
AU2003215101A1 (en) * 2002-02-08 2003-09-02 Nichols Aluminum Method of manufacturing aluminum alloy sheet
US20040011438A1 (en) * 2002-02-08 2004-01-22 Lorentzen Leland L. Method and apparatus for producing a solution heat treated sheet
DE102013013407B4 (de) * 2013-08-07 2015-05-28 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Schneid- und Zerspanwerkzeugen aus Stahl mit verbesserter Standzeit
KR20160047541A (ko) * 2013-09-06 2016-05-02 알코아 인코포레이티드 알루미늄 합금 제품 및 이의 제조 방법
BR112018075408A2 (pt) * 2016-06-28 2019-06-04 Novelis Inc liga de alumínio, folha, artigo, e, método de preparação de uma folha de alumínio.
EP3892398B1 (de) 2016-10-27 2023-08-09 Novelis, Inc. Verfahren zum kontinuierlichen giessen und walzen aluminium-legierung und aluminium-legierung zwischenprodukt
KR20190075992A (ko) 2016-10-27 2019-07-01 노벨리스 인크. 고강도 6xxx 시리즈 알루미늄 합금 및 그 제조 방법
MX2019004835A (es) 2016-10-27 2019-06-20 Novelis Inc Aleaciones de aluminio de la serie 7xxx de alta resistencia y metodos de preparacion.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1198006A (fr) * 1958-01-31 1959-12-04 Pechiney Prod Chimiques Sa Coulée continue des métaux
US3486947A (en) * 1967-06-21 1969-12-30 Olin Mathieson Enhanced structural uniformity of aluminum based alloys by thermal treatments
CH493642A (de) * 1967-12-29 1970-07-15 Alusuisse Verfahren zur Herstellung von feinkörnigen Bändern aus manganhaltigen Aluminium-Legierungen
US3787248A (en) * 1972-09-25 1974-01-22 H Cheskis Process for preparing aluminum alloys
US4039356A (en) * 1973-05-14 1977-08-02 Schumacher William J Galling resistant austenitic stainless steel
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
US4163665A (en) * 1978-06-19 1979-08-07 Alumax Mill Products, Inc. Aluminum alloy containing manganese and copper and products made therefrom
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
US4235646A (en) * 1978-08-04 1980-11-25 Swiss Aluminium Ltd. Continuous strip casting of aluminum alloy from scrap aluminum for container components
US4238248A (en) * 1978-08-04 1980-12-09 Swiss Aluminium Ltd. Process for preparing low earing aluminum alloy strip on strip casting machine
US4269632A (en) * 1978-08-04 1981-05-26 Coors Container Company Fabrication of aluminum alloy sheet from scrap aluminum for container components
US4334935A (en) * 1980-04-28 1982-06-15 Alcan Research And Development Limited Production of aluminum alloy sheet
US4318755A (en) * 1980-12-01 1982-03-09 Alcan Research And Development Limited Aluminum alloy can stock and method of making same

Also Published As

Publication number Publication date
MY8600318A (en) 1986-12-31
PH18237A (en) 1985-05-03
ES8402620A1 (es) 1984-02-01
BR8302222A (pt) 1984-01-03
IN159293B (de) 1987-04-25
AR231151A1 (es) 1984-09-28
GR71597B (de) 1983-06-17
JPS58199854A (ja) 1983-11-21
GB8311283D0 (en) 1983-06-02
FR2526047A1 (fr) 1983-11-04
SU1306484A3 (ru) 1987-04-23
CA1203068A (fr) 1986-04-15
FR2526047B1 (de) 1984-10-05
MA19784A1 (fr) 1983-12-31
JPS6242025B2 (de) 1987-09-05
ES521949A0 (es) 1984-02-01
DE3360967D1 (en) 1985-11-14
AU1403383A (en) 1983-11-03
US4441933A (en) 1984-04-10
GB2119294A (en) 1983-11-16
EP0094328A1 (de) 1983-11-16
NO831516L (no) 1983-10-31
GB2119294B (en) 1985-09-25
AU550513B2 (en) 1986-03-20
TR21513A (tr) 1984-07-01

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