EP0035718B1 - Procédé pour la fabrication d'une feuille ou bande en aluminium ou alliage d'aluminium présentant une bonne aptitude à l'emboutissage profond - Google Patents
Procédé pour la fabrication d'une feuille ou bande en aluminium ou alliage d'aluminium présentant une bonne aptitude à l'emboutissage profond Download PDFInfo
- Publication number
- EP0035718B1 EP0035718B1 EP81101433A EP81101433A EP0035718B1 EP 0035718 B1 EP0035718 B1 EP 0035718B1 EP 81101433 A EP81101433 A EP 81101433A EP 81101433 A EP81101433 A EP 81101433A EP 0035718 B1 EP0035718 B1 EP 0035718B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- rolling
- micro
- sheet
- deep
- 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
Links
Images
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 invention relates to a method for producing a deep-drawable sheet, strip or the like from aluminum or aluminum alloys.
- lubricants also does not achieve the desired success if conventional smooth or directional surface structures are used, because in this case the lubricant film is squeezed away by the hold-down device and the friction at this point of extreme stress quickly assumes an impermissible level, which leads to the tear of the drawn part .
- An improvement in the friction conditions in the drawing gap and in the hold-down device is achieved if, instead of the usual blank, matt-rolled, brushed, ground or even deep-drawn foil-coated board surface, a roughened surface is used, which enables a high lubricant pressure to be built up on the tool-board contact surface.
- the invention is therefore based on the object of forming the surface of an aluminum sheet or strip in such a way that improved deep-drawing results are thereby achieved.
- This object is achieved according to the invention by a method for producing a sheet, strip or the like made of aluminum or aluminum alloys that can be deep-drawn and has fine micro-roughness which is as far as possible non-oriented of the sheet, strip or the like. of about 3% and the roll forming is followed by a soft annealing.
- a method has proven to be particularly advantageous in which, when roll profiling, a roller whose surface is blasted with cast steel with a hardness of HRC 62-65 and grits No. to No. 4 at a centrifugal speed of 50-150 m / s is irradiated, is rolled.
- the strips are expediently passed through a strip drawing furnace at a speed between 30 and 90 seconds, the final temperature of the strip being 400 to 450 ° C.
- micro-roughness of the roll used in roll profiling can also be generated by chemical, mechanical or thermal treatment.
- an aluminum sheet produced according to the invention with such a micro surface during deep drawing creates very favorable frictional relationships between the hold-down device and the sheet, which enables a qualified flow of the material into the die and thus largely prevents the formation of cracks and wrinkles .
- Such a micro-surface proves to be particularly advantageous in connection with a lubricant, because the pointed, unoriented profiles of the roughness in connection with the hold-down device seal the lubricant and prevent it from being pushed away.
- micro-profiles 2 which are essentially evenly distributed, rise on the surface. They have the shape of slender cones with the tips 3.
- the depressions 4 between the profiles are appropriately flattened or rounded in order to avoid notching effects.
- the micro surface is covered with a lubricant 5.
- the tips of the profiles 2 are flattened by a hold-down device 7 at 8, the recesses 4 being sealed so that the lubricant filling that is absorbed remains enclosed.
- the invention proposes a re-rolling, the rolling surface of which is sandblasted so that a largely uniform surface is formed which, due to a slight flattening of the blasted profiles on the roller, does not result in any sharp notches in the profile base of the sheet thus rolled .
- the roll pass must be carried out before soft or solution annealing, depending on the alloy used.
- Subsequent annealing softens the profiles hardened during re-rolling, making it easier to flatten the tips with the hold-down device.
- the annealing therefore meets the requirement for the softest possible characteristic of the micro-profile.
- the annealing should be such that its effect is aimed only at influencing the micro-profile and the mechanical-technological values of the base material are not undesirably influenced.
- the rolls to be used for re-rolling the sheets are expediently sandblasted in a cabin.
- the roller hardness should be at least 95 Shore-C.
- a jet of cast steel with a hardness of HRC 62 to 65 and grits No. 2 to No. 4 with a maximum grain size of 0.5 to 1.5 mm and screened fine particles can be used.
- the spin speeds should be 50 to 150 m / s. Irradiation takes place with the roller rotating and the beam being axially displaced.
- the soft annealing is expediently carried out in a continuous strip furnace with or without protective gas.
- the throughput time through the furnace should be between 30 and 90 seconds, preferably 50 to 60 seconds, and the final temperature of the belt should be 400 to 550 ° C, preferably 490 to 520 ° C.
- the invention is not limited to the embodiment shown in FIGS. 1 and 2. Not all micro elevations need to have a uniform cone shape. The elevations can also differ in height, just as the cross-sectional areas parallel to the height or base axis can also be quite varied. On the other hand, it is essential that the micro-profiles are in an arrangement that is not aligned but offset against one another in the finest possible distribution tion are formed on the sheet surface. This ensures that the material flows sufficiently and evenly into the die or the die and, when using a lubricant, largely prevents it from being pushed away.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Continuous Casting (AREA)
- Coating With Molten Metal (AREA)
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81101433T ATE8853T1 (de) | 1980-03-06 | 1981-02-27 | Verfahren zur herstellung eines tiefziehfaehigen bleches, bandes oder dgl. aus aluminium oderlegierungen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3008679A DE3008679C2 (de) | 1980-03-06 | 1980-03-06 | Tiefziehfähiges Blech oder Band aus Nichteisen-Metall oder Legierung daraus, insbesondere aus Aluminium sowie Verfahren zu dessen Herstellung |
DE3008679 | 1980-03-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0035718A1 EP0035718A1 (fr) | 1981-09-16 |
EP0035718B1 true EP0035718B1 (fr) | 1984-08-08 |
Family
ID=6096480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81101433A Expired EP0035718B1 (fr) | 1980-03-06 | 1981-02-27 | Procédé pour la fabrication d'une feuille ou bande en aluminium ou alliage d'aluminium présentant une bonne aptitude à l'emboutissage profond |
Country Status (4)
Country | Link |
---|---|
US (1) | US4634475A (fr) |
EP (1) | EP0035718B1 (fr) |
AT (1) | ATE8853T1 (fr) |
DE (1) | DE3008679C2 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES8404623A1 (es) * | 1982-12-13 | 1984-05-01 | Galicia Aluminio | Procedimiento de fabricacion de discos de aluminio para la formacion de envases metalicos. |
DE3705100A1 (de) * | 1987-02-18 | 1988-09-01 | Benecke Gmbh J | Verfahren zur herstellung einer oberflaechenstruktur von praegewalzen sowie nach dem verfahren hergestellte praegewalze |
DE3713909A1 (de) | 1987-04-25 | 1988-11-10 | Vaw Ver Aluminium Werke Ag | Tiefziehfaehiges blech oder band aus aluminium oder aluminiumlegierungen sowie verfahren zu seiner herstellung |
US5305362A (en) * | 1992-12-10 | 1994-04-19 | Hewlett-Packard Company | Spur reduction for multiple modulator based synthesis |
EP0690142A1 (fr) * | 1994-06-09 | 1996-01-03 | The Furukawa Electric Co., Ltd. | TÔle en alliage d'aluminium pour carrosseries d'automobiles, son procédé de fabrication et son procédé de formage |
DE60113772T2 (de) * | 2000-06-29 | 2006-06-22 | Corus Aluminium N.V. | Verfahren zur Herstellung eines Aluminiumbleches und Aluminiumblech |
DE10221515C1 (de) * | 2002-05-14 | 2003-11-13 | Hydro Aluminium Deutschland | Verfahren zur Herstellung eines Aluminiumrohres |
CN101885019B (zh) * | 2010-06-24 | 2013-01-02 | 镇江源龙铝业有限责任公司 | 一种双辊轧制拉丝铝带的制造方法 |
CN111378911B (zh) * | 2020-04-27 | 2021-06-15 | 广东万和热能科技有限公司 | 铸铝件的抛丸工艺方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3487674A (en) * | 1965-06-06 | 1970-01-06 | Fuji Iron & Steel Co Ltd | Method of producing cold rolled steel sheets suitable for press forming |
AT345236B (de) * | 1973-10-17 | 1978-09-11 | Alusuisse | Walzgeruest zum walzen von aluminium und aluminiumlegierungen |
AT347387B (de) * | 1973-10-17 | 1978-12-27 | Alusuisse | Walzgeruest zum walzen von aluminium und aluminiumlegierungen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2290623A1 (fr) * | 1974-11-06 | 1976-06-04 | Lorraine Laminage | Tole pour emboutissage profond ou extraprofond et procede d'obtention d'une telle tole |
-
1980
- 1980-03-06 DE DE3008679A patent/DE3008679C2/de not_active Expired
-
1981
- 1981-02-27 AT AT81101433T patent/ATE8853T1/de active
- 1981-02-27 EP EP81101433A patent/EP0035718B1/fr not_active Expired
-
1982
- 1982-12-27 US US06/453,176 patent/US4634475A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3487674A (en) * | 1965-06-06 | 1970-01-06 | Fuji Iron & Steel Co Ltd | Method of producing cold rolled steel sheets suitable for press forming |
AT345236B (de) * | 1973-10-17 | 1978-09-11 | Alusuisse | Walzgeruest zum walzen von aluminium und aluminiumlegierungen |
AT347387B (de) * | 1973-10-17 | 1978-12-27 | Alusuisse | Walzgeruest zum walzen von aluminium und aluminiumlegierungen |
Also Published As
Publication number | Publication date |
---|---|
ATE8853T1 (de) | 1984-08-15 |
EP0035718A1 (fr) | 1981-09-16 |
US4634475A (en) | 1987-01-06 |
DE3008679C2 (de) | 1983-08-18 |
DE3008679A1 (de) | 1981-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0438031B1 (fr) | Procédé pour le traitement de la surface de pièces et pièce réalisée selon ce procédé | |
DE102008024313A1 (de) | Verfahren zur Vorkonditionierung einer zu beschichtenden Oberfläche | |
EP0035718B1 (fr) | Procédé pour la fabrication d'une feuille ou bande en aluminium ou alliage d'aluminium présentant une bonne aptitude à l'emboutissage profond | |
DE69423784T2 (de) | Verfahren und vorrichtung zur herstellung von kaltgewalzten metallblechen oder -bändern, und daraus gewonnene metallbleche oder -bänder | |
DE102019214135A1 (de) | Stahlblech mit einer deterministischen Oberflächenstruktur | |
DE102019214133A1 (de) | Stahlblech mit einer deterministischen Oberflächenstruktur | |
DE2549249B2 (de) | Tiefziehblech und Verfahren zu seiner Herstellung | |
CH633206A5 (de) | Kokille mit aufgerauhter oberflaeche zum giessen von metallen. | |
EP0289775A2 (fr) | Tôle ou bande en aluminium ou en alliage d'aluminium, apte à l'emboutissage profond et procédé pour sa fabrication | |
DE2906509A1 (de) | Verfahren zur formgebung mit einem auf eine seite eines gegenstandes zur einwirkung gelangenden stoffstrahl | |
DE1239893B (de) | Verfahren zum Herstellen einer duennen Tellerfeder | |
DE3705100A1 (de) | Verfahren zur herstellung einer oberflaechenstruktur von praegewalzen sowie nach dem verfahren hergestellte praegewalze | |
DE2314348A1 (de) | Flammspritzverfahren zum aufbringen eines verschleissfesten metallueberzugs auf die innenflaeche ringfoermiger gegenstaende | |
WO2017144407A1 (fr) | Cylindre, en particulier cylindre de travail de dressage et produit plat dressé | |
DE2046653C3 (de) | Verfahren zur Herstellung von mit wenigstens einem Schutzüberzug versehenen, kaltgewalzten Metallbändern oder -blechen | |
DE29706241U1 (de) | Mit Wiederholungsmuster graviertes Metallblech | |
DE19652872A1 (de) | Verfahren zur Steigerung der Randschichtfestigkeit an Oberflächen von aus sprödharten Werkstoffen gefertigten Werkstücken | |
DE2013674B2 (de) | Verfahren zum Härten von Werkstücken, wie Werkzeugen mittels eines Energiestrahls | |
EP2965854B1 (fr) | Procédé et dispositif de conditionnement de surfaces de feuillards d'acier à l'aide d'une technique sélective en surface | |
AT165717B (de) | Verfahren zur Erzielung einer weichen, schmiegsamen und nachgiebigen Oberflächenschichte an Körpern aus hartem, eine spanabhebende Verformung zulassendem Material und danach hergestellte Körper | |
AT519302B1 (de) | Verfahren zur Herstellung einer Pressmatrize | |
DE102019213464B4 (de) | Verfahren zum Herstellen eines Reibbremskörpers für eine Reibbremse eines Kraftfahrzeugs | |
DE900926C (de) | Verfahren und Vorrichtung zum Walzen von Verzahnungen, Riffelungen oder Kerbungen anzylindrischen Werkstuecken | |
EP3445886B1 (fr) | Procédé pour augmenter l'aptitude à la déformation plastique d'une pièce à l'aide d'un agent d'absorption | |
EP3254773A1 (fr) | Procédé et dispositif de conditionnement structurel d'un cylindre |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT FR GB IT NL SE |
|
17P | Request for examination filed |
Effective date: 19811008 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT FR GB IT NL SE |
|
REF | Corresponds to: |
Ref document number: 8853 Country of ref document: AT Date of ref document: 19840815 Kind code of ref document: T |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19841228 Year of fee payment: 5 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: SCHWEIZERISCHE ALUMINIUM AG Effective date: 19850503 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: AUSTRIA METALL AKTIENGESELLSCHAFT |
|
NLT1 | Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1 |
Owner name: AUSTRIA METALL AKTIENGESELLSCHAFT TE BRAUNAU A.D. |
|
NLR1 | Nl: opposition has been filed with the epo |
Opponent name: SCHWEIZERISCHE ALUMINIUM AG |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19851202 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19860228 Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19870227 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19870228 |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
27W | Patent revoked |
Effective date: 19870812 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
NLR2 | Nl: decision of opposition | ||
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state | ||
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
EUG | Se: european patent has lapsed |
Ref document number: 81101433.1 Effective date: 19880215 |