EP0289775A2 - Deep-drawable sheet or strip made from aluminium or aluminium alloys, and process for its manufacture - Google Patents

Deep-drawable sheet or strip made from aluminium or aluminium alloys, and process for its manufacture Download PDF

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Publication number
EP0289775A2
EP0289775A2 EP88104904A EP88104904A EP0289775A2 EP 0289775 A2 EP0289775 A2 EP 0289775A2 EP 88104904 A EP88104904 A EP 88104904A EP 88104904 A EP88104904 A EP 88104904A EP 0289775 A2 EP0289775 A2 EP 0289775A2
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EP
European Patent Office
Prior art keywords
deep
sheet
honeycomb
strip
aluminium
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.)
Granted
Application number
EP88104904A
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German (de)
French (fr)
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EP0289775B1 (en
EP0289775A3 (en
Inventor
Friedrich Dr. Ostermann
Christian Dr. Dumont
Rainer Dipl.-Ing. Balbach
Gerhard Dipl.-Ing. Söllner
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Vaw Aluminium AG
Original Assignee
Vereinigte Aluminium Werke AG
Vaw Aluminium AG
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Application filed by Vereinigte Aluminium Werke AG, Vaw Aluminium AG filed Critical Vereinigte Aluminium Werke AG
Priority to AT88104904T priority Critical patent/ATE83180T1/en
Publication of EP0289775A2 publication Critical patent/EP0289775A2/en
Publication of EP0289775A3 publication Critical patent/EP0289775A3/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/227—Surface roughening or texturing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/14—Roughness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]

Definitions

  • the invention relates to a deep-drawable sheet or strip made of aluminum or aluminum alloys with a surface treated for deep-drawing and a method for its production.
  • a deep-drawn sheet of the type mentioned is known from DE-OS 30 08 679. Due to the roughening process used, it has an uneven micro-roughness of approximately 0.8 to 5 ⁇ m with finely distributed, mostly slender tips on the surface. The non-uniformity relates to the height and the diameter of the tips or the distance and the outline of the depressions in the surface. In conjunction with the hold-down device, the depressions should be sealed during deep drawing so that the lubricant filling absorbed remains enclosed (see column 3, lines 60 ff.).
  • roller surface is roughened by sandblasting in accordance with the known method according to DE-OS 30 08 679, and the desired micro surface is thus produced by re-rolling the sheet or strip.
  • the depressions for the lubricant are arranged offset from one another, but a closer examination shows that the microwells are interconnected, so that the lubricant fill taken in can drain off laterally .
  • the object of the present invention is to enable hydrodynamic pressure build-up in the pinch gap between the tool surface and sheet metal roughness peaks in a deep-drawable sheet or a deep-drawable strip of the type mentioned above, and thus to improve the sliding properties in the drawing tool and to reduce the drawing force by at least 30% compared to conventional surfaces .
  • a particularly favorable micro surface for avoiding wrinkles and cracks can be achieved with a honeycomb density of 10 - 250 honeycombs per mm2. In the preferred range of between 100-140 honeycombs per mm2, a particularly high drawing reserve (according to Engelhardt) of at least 28% is established, the honeycomb diameter being 20-200 ⁇ m, preferably 80-100 ⁇ m.
  • the honeycomb diameter corresponds to the diameter of the circle encompassing the honeycomb structure.
  • the micro surface according to the invention in a honeycomb structure is produced by appropriately prepared rolls with a degree of rolling> 6% in the last cold rolling pass.
  • the aluminum sheets or strips produced in this way are suitable for deep drawing, stretching and ironing all types of aluminum alloys.
  • the supporting surface of the honeycomb structure is denoted by 1 and the lubricant filling by 2. It can be seen that the honeycomb structure is designed like a lubricant pocket in which the lubricant is enclosed on all sides.
  • FIG. 2 shows the micro surface of a sheet metal surface produced by means of a sandblasted roller.
  • the load-bearing roughness tips 3 are surrounded by the lubricant 4, which can flow laterally into channel-like openings. This does not result in a stable build-up of pressure, since the lubricating film is not formed with constant uniformity and tears off at the places subject to higher loads.
  • FIG. 3 shows a cross section through the deep-drawable sheet metal 5 produced according to the invention and a hold-down device 6 in the region of the deformation zone. Due to the relative movement between sheet metal and tool, a hydrodynamic pressure is built up in the gap 8 between sheet metal 5 and hold-down device 6. The squeezing flow of the lubricant is indicated by arrows 7.
  • the sheet metal surfaces are given with (1) irregular for DE-OS 30 08 679, (2) honeycomb structure for the sheet treated according to the invention and (3) with finish for a sheet made by means of ground rolls.
  • the second line shows the surface roughness RA according to DIN 4768, measured parallel to the rolling direction, in line three the surface roughness perpendicular to the rolling direction.
  • Line four shows the drawing reserve according to Engelhardt and line five shows the drawing force in kN for the respective sheet examined.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metal Rolling (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Catalysts (AREA)

Abstract

2.1 Bei einem tiefziehfähigen Blech oder Band soll ein hydrodynamischer Druckaufbau im Quetschspalt zwischen Werkzeugoberfläche und Blechrauhigkeitsspitzen ermöglicht werden, um die Gleiteigenschaften im Ziehwerkzeug zu verbessern und die Ziehkraft um mindestens 30% gegenüber herkömmlichen Oberflächen zu verringern. 2.2 Die Oberfläche des tiefziehfähigen Bleches oder Bandes weist eine Mikrorauhigkeit von RA = 0,1 - 0,8 µm bei gleichmäßigen wabenförmigen Strukturen auf, wobei der Wabendurchmesser 20 - 200 µm, vorzugsweise 80 - 100 µm beträgt. Bei der Herstellung des Bleches oder Bandes kommt es entscheidend auf den Abwalzgrad beim letzten Kaltwalzstich an, der über 6 % betragen muß. 2.3 Die Anwendung umfaßt tiefziehfähige Bleche oder Bänder aus Nicht-Eisenmetall oder Legierungen daraus, insbesondere aus Aluminium oder Aluminiumlegierungen mit einer für das Tiefziehen vorbehandelten Oberfläche.2.1 In the case of a deep-drawn sheet or strip, a hydrodynamic pressure build-up in the pinch gap between the tool surface and sheet metal roughness peaks should be made possible in order to improve the sliding properties in the drawing tool and to reduce the drawing force by at least 30% compared to conventional surfaces. 2.2 The surface of the deep-drawable sheet or strip has a micro roughness of RA = 0.1-0.8 µm with uniform honeycomb structures, the honeycomb diameter being 20-200 µm, preferably 80-100 µm. In the production of the sheet or strip, the decisive factor is the degree of rolling in the last cold rolling pass, which must be over 6%. 2.3 The application includes deep-drawn sheets or strips made of non-ferrous metal or alloys thereof, in particular made of aluminum or aluminum alloys with a surface pretreated for deep-drawing.

Description

Die Erfindung betrifft ein tiefziehfähiges Blech oder Band aus Aluminium oder Aluminiumlegierungen mit einer für das Tief­ziehen behandelten Oberfläche sowie ein Verfahren zu seiner Herstellung.The invention relates to a deep-drawable sheet or strip made of aluminum or aluminum alloys with a surface treated for deep-drawing and a method for its production.

Ein tiefziehfähiges Blech der eingangs genannten Art ist aus der DE-OS 30 08 679 bekannt. Es weist - bedingt durch das ange­wandte Aufrauhverfahren - eine ungleichmäßige Mikrorauhigkeit von etwa 0,8 bis 5 µm mit an der Oberfläche fein verteilten, überwiegend schlanken Spitzen auf. Die Ungleichmäßigkeit be­zieht sich auf die Höhe und den Durchmesser der Spitzen bzw. im Abstand und dem Umriß der Vertiefungen in der Oberfläche. In Verbindung mit dem Niederhalter sollen beim Tiefziehen die Vertiefungen abgedichtet werden, so daß die aufgenommene Schmiermittelfüllung eingeschlossen bleibt (s. Spalte 3, Zeile 60 ff.).A deep-drawn sheet of the type mentioned is known from DE-OS 30 08 679. Due to the roughening process used, it has an uneven micro-roughness of approximately 0.8 to 5 µm with finely distributed, mostly slender tips on the surface. The non-uniformity relates to the height and the diameter of the tips or the distance and the outline of the depressions in the surface. In conjunction with the hold-down device, the depressions should be sealed during deep drawing so that the lubricant filling absorbed remains enclosed (see column 3, lines 60 ff.).

Um diesen Effekt zu erreichen, wird nach dem bekannten Verfahren gemäß DE-OS 30 08 679 die Walzenoberfläche durch Sandstrahlung aufgerauht und damit die erwünschte Mikrooberfläche durch Nach­walzen des Bleches oder Bandes hergestellt.In order to achieve this effect, the roller surface is roughened by sandblasting in accordance with the known method according to DE-OS 30 08 679, and the desired micro surface is thus produced by re-rolling the sheet or strip.

Bei dem in bekannter Weise aufgerauhten, tiefziehfähigen Blech oder Band gemäß DE-OS 30 08 679 sind die Vertiefungen für den Schmierstoff zwar gegeneinander versetzt angeordnet, jedoch zeigt eine genauere Untersuchung, daß die Mikrovertiefungen untereinander verbunden sind, so daß die aufgenommene Schmier­mittelfüllung seitlich abfließen kann.In the well-roughened, deep-drawable sheet or strip according to DE-OS 30 08 679, the depressions for the lubricant are arranged offset from one another, but a closer examination shows that the microwells are interconnected, so that the lubricant fill taken in can drain off laterally .

Aufgabe der vorliegenden Erfindung ist es, bei einem tiefzieh­fähigen Blech oder einem tiefziehfähigen Band der eingangs ge­nannten Art einen hydrodynamischen Druckaufbau im Quetschspalt zwischen Werkzeugoberfläche und Blechrauhigkeitsspitzen zu er­möglichen und damit die Gleiteigenschaften im Ziehwerkzeug zu verbessern und die Ziehkraft um mindestens 30 % gegenüber her­kömmlichen Oberflächen zu verringern.The object of the present invention is to enable hydrodynamic pressure build-up in the pinch gap between the tool surface and sheet metal roughness peaks in a deep-drawable sheet or a deep-drawable strip of the type mentioned above, and thus to improve the sliding properties in the drawing tool and to reduce the drawing force by at least 30% compared to conventional surfaces .

Eine besonders günstige Mikrooberfläche für die Vermeidung von Falten- und Rißbildung ist durch eine Wabendichte von 10 - 250 Waben pro mm² zu erzielen. Im Vorzugsbereich von zwischen 100 - 140 Waben pro mm² stellt sich eine besonders hohe Zieh­reserve (nach Engelhardt) von mindestens 28 % ein, wobei der Wa­bendurchmesser 20 - 200 µm, vorzugsweise 80 - 100 µm beträgt. Der Wabendurchmesser entspricht dem Durchmesser des die waben­förmige Struktur unfassenden Kreises.A particularly favorable micro surface for avoiding wrinkles and cracks can be achieved with a honeycomb density of 10 - 250 honeycombs per mm². In the preferred range of between 100-140 honeycombs per mm², a particularly high drawing reserve (according to Engelhardt) of at least 28% is established, the honeycomb diameter being 20-200 µm, preferably 80-100 µm. The honeycomb diameter corresponds to the diameter of the circle encompassing the honeycomb structure.

Die erfindungsgemäße Mikrooberfläche in Wabenstruktur wird durch entsprechend präparierte Walzen bei einem Abwalzgrad > 6 % im letzten Kaltwalzstich erzeugt. Die damit hergestell­ten Aluminiumbleche oder -bänder eignen sich für das Tief-, Streck- und Abstreckziehen aller Legierungstypen des Aluminium.The micro surface according to the invention in a honeycomb structure is produced by appropriately prepared rolls with a degree of rolling> 6% in the last cold rolling pass. The aluminum sheets or strips produced in this way are suitable for deep drawing, stretching and ironing all types of aluminum alloys.

Im folgenden wird die Erfindung anhand eines schematisierten Ausführungsbeispieles näher erläutert. Es zeigen:

  • Fig. 1 = Mikrooberfläche des erfindungsgemäßen tiefzieh­fähigen Bleches,
  • Fig. 2 = Vergleichsoberfläche nach DE-OS 30 08 679,
  • Fig. 3 = Quetschströmung zwischen Werkzeug und Blech bei einem erfindungsgemäß tiefgezogenen Blech.
The invention is explained in more detail below on the basis of a schematic exemplary embodiment. Show it:
  • 1 = micro surface of the deep-drawing sheet according to the invention,
  • 2 = comparison surface according to DE-OS 30 08 679,
  • 3 = squeezing flow between the tool and the sheet metal in the case of an inventive deep-drawn sheet metal.

In Fig. 1 ist die tragende Fläche der Wabenstruktur mit 1 und die Schmierstoff-Füllung mit 2 bezeichnet. Man erkennt, daß die Wabenstruktur wie eine Schmierstoff-Tasche ausgebildet ist, bei der der Schmierstoff allseitig umschlossen ist.In Fig. 1, the supporting surface of the honeycomb structure is denoted by 1 and the lubricant filling by 2. It can be seen that the honeycomb structure is designed like a lubricant pocket in which the lubricant is enclosed on all sides.

Fig. 2 zeigt die Mikrooberfläche einer mittels sandgestrahlter Walze herstellten Blechoberfläche. Die tragenden Rauhigkeits­spitzen 3 sind vom Schmierstoff 4 umgeben, der seitlich in kanalartigen Öffnungen abfließen kann. Ein stabiler Druckaufbau kommt dadurch nicht zustand, da der Schmierfilm nicht mit kon­stanter Gleichmäßigkeit ausgebildet ist und an den höherbe­lasteten Stellen abreißt.2 shows the micro surface of a sheet metal surface produced by means of a sandblasted roller. The load-bearing roughness tips 3 are surrounded by the lubricant 4, which can flow laterally into channel-like openings. This does not result in a stable build-up of pressure, since the lubricating film is not formed with constant uniformity and tears off at the places subject to higher loads.

Fig. 3 zeigt einen Querschnitt durch das erfindungsgemäß her­gestellte tiefziehfähige Blech 5 und einen Niederhalter 6 im Bereich der Verformungszone. Durch die Relativbewegung zwi­schen Blech und Werkzeug wird ein hydrodynamischer Druck im Spalt 8 zwischen Blech 5 und Niederhalter 6 aufgebaut. Die Quetschströmung des Schmiermittels ist durch Pfeile 7 ange­deutet.3 shows a cross section through the deep-drawable sheet metal 5 produced according to the invention and a hold-down device 6 in the region of the deformation zone. Due to the relative movement between sheet metal and tool, a hydrodynamic pressure is built up in the gap 8 between sheet metal 5 and hold-down device 6. The squeezing flow of the lubricant is indicated by arrows 7.

Im folgenden wird ein Vergleichsversuch zwischen dem erfin­dungsgemäß hergestellten tiefziehfähigen Blech mit Waben­struktur aus der Legierung AlMg5Mn, einem Vergleichsblech nach DE-OS 30 08 679 und einem mittels geschliffenen Walzen herge­stellten Blech (mill finish) gleicher Legierung durchgeführt. Die jeweilige Oberfläche wurde durch Aufnahmen mit dem Raster­elektronenmikroskop festgehalten. Es zeigen im Maßstab 1 : 100:

  • Fig. 4 = Oberfläche des erfindungsgemäßen Bleches
  • Fig. 5 = Oberfläche nach DE-OS 30 08 679
  • Fig. 6 = Oberfläche eines Standardbleches (mill finish)
In the following, a comparison test is carried out between the thermoformed sheet with honeycomb structure made of the alloy AlMg5Mn, a comparison sheet according to DE-OS 30 08 679 and a sheet made of the same alloy made by means of ground rollers (mill finish). The respective surface was recorded by scanning electron microscope. On a scale of 1: 100:
  • Fig. 4 = surface of the sheet according to the invention
  • Fig. 5 = surface according to DE-OS 30 08 679
  • Fig. 6 = surface of a standard sheet (mill finish)

Aus der Legierung AlMg5Mn (Norm AA 5182) wurde ein Blech mit der Dicke 1,25 mm, Zustand: weich, hergestellt. In der ersten Zeile der nachfolgenden Tabelle sind die Blechoberflächen mit (1) un­regelmäßig für DE-OS 30 08 679, (2) Wabenstruktur für das erfin­dungsgemäß behandelte Blech und (3) mit finish für ein mittels geschliffenen Walzen hergestelltes Blech angegeben. In der zwei­ten Zeile sind die Oberflächenrauhigkeiten RA nach DIN 4768, ge­messen parallel zur Walzrichtung, angegeben, in Zeile drei die Oberflächenrauhigkeiten senkrecht zur Walzrichtung. In Zeile vier ist die Ziehreserve nach Engelhardt angegeben und in Zei­le fünf die Ziehkraft in kN für das jeweils untersuchte Blech.A sheet with a thickness of 1.25 mm, condition: soft, was produced from the alloy AlMg5Mn (standard AA 5182). In the first line of the table below, the sheet metal surfaces are given with (1) irregular for DE-OS 30 08 679, (2) honeycomb structure for the sheet treated according to the invention and (3) with finish for a sheet made by means of ground rolls. The second line shows the surface roughness RA according to DIN 4768, measured parallel to the rolling direction, in line three the surface roughness perpendicular to the rolling direction. Line four shows the drawing reserve according to Engelhardt and line five shows the drawing force in kN for the respective sheet examined.

Es wurden Näpfe mit kugelförmigem Boden, Durchmesser 125 mm, hergestellt. Die Ergebnisse der Tabelle zeigen die überraschen­den Eigenschaften des erfindungsgemäß hergestellten Bleches mit einer Steigerung der Ziehreserve um 6 % und einer Verminderung der Ziehkraft um 30 kN.

Figure imgb0001
Bowls with a spherical bottom, diameter 125 mm, were produced. The results of the table show the surprising properties of the sheet produced according to the invention with an increase in the drawing reserve by 6% and a reduction in the drawing force by 30 kN.
Figure imgb0001

Claims (5)

1. Tiefziehfähiges Blech, Band o.dgl. aus Nicht-Eisenmetall oder Legierungen daraus, insbesondere aus Aluminium, mit einer für das Tiefziehen vorbehandelten Oberfläche, dadurch gekenn­zeichnet, daß die Oberfläche Mikrorauhigkeiten von Ra = 0,1 - 0,8 µm bei einer gleichmäßigen, wabenförmigen Struktur aufweist, wobei der Wabendurchmesser 20 - 200 µm, vorzugsweise 80 - 100 µm beträgt.1. Deep-drawing sheet, band or the like. made of non-ferrous metal or alloys thereof, in particular aluminum, with a surface pretreated for deep drawing, characterized in that the surface has micro-roughness of Ra = 0.1-0.8 µm with a uniform, honeycomb-shaped structure, the honeycomb diameter 20 - 200 microns, preferably 80 - 100 microns. 2. Tiefziehfähiges Blech nach Anspruch 1, dadurch gekennzeich­net, daß die Wabenstruktur (1) aus einer Wabenwand (8) mit konstanter Wabenhöhe H und einer Wanddicke D gebildet wird, wobei das Verhältnis von H : D = 0,1 - 1,2 : 1 beträgt.2. Deep-drawing sheet according to claim 1, characterized in that the honeycomb structure (1) from a honeycomb wall (8) with a constant honeycomb height H and a wall thickness D is formed, the ratio of H: D = 0.1 - 1.2: Is 1. 3. Tiefziehfähiges Blech nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wanddicke D, die dem Wabenabstand entspricht, über die gesamte wabenförmige Struktur des Bleches um ± 5 % schwankt.3. Deep-drawing sheet according to one of the preceding claims, characterized in that the wall thickness D, which corresponds to the honeycomb spacing, fluctuates by ± 5% over the entire honeycomb structure of the sheet. 4. Tiefziehfähiges Blech nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wabendichte zwischen 10 und 250, vorzugsweise 100 - 140 Waben pro mm² liegt.4. Deep-drawing sheet according to one of the preceding claims, characterized in that the honeycomb density is between 10 and 250, preferably 100 - 140 honeycombs per mm². 5. Verfahren zur Herstellung eines tief-, streck- und abstreck­ziehfähigen Bleches, Bandes o.dgl., wobei die Oberflächen­feinstruktur durch Walzen im letzten Walzgang eingestellt wird, gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Abwalzgrad beim letzten Kaltwalz­stich > 6 % beträgt.5. A process for producing a sheet, strip or the like capable of deep drawing, stretching and ironing, the surface fine structure being set by rolling in the last rolling pass, according to one of the preceding claims, characterized in that the degree of rolling in the last cold rolling pass is> 6%. is.
EP88104904A 1987-04-25 1988-03-26 Deep-drawable sheet or strip made from aluminium or aluminium alloys, and process for its manufacture Expired - Lifetime EP0289775B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104904T ATE83180T1 (en) 1987-04-25 1988-03-26 DEEP-DRAWING SHEET OR STRIP OF ALUMINUM OR ALUMINUM ALLOYS AND PROCESS FOR ITS PRODUCTION.

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DE19873713909 DE3713909A1 (en) 1987-04-25 1987-04-25 DEEP-DRAWABLE SHEET OR STRIP MADE OF ALUMINUM OR ALUMINUM ALLOYS AND METHOD FOR THE PRODUCTION THEREOF
DE3713909 1987-04-25

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EP0289775A2 true EP0289775A2 (en) 1988-11-09
EP0289775A3 EP0289775A3 (en) 1990-05-23
EP0289775B1 EP0289775B1 (en) 1992-12-09

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US (1) US4886713A (en)
EP (1) EP0289775B1 (en)
JP (1) JPH01111850A (en)
KR (1) KR880012783A (en)
AT (1) ATE83180T1 (en)
DE (2) DE3713909A1 (en)
ES (1) ES2037756T3 (en)
GR (1) GR3006950T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665448A1 (en) * 1994-02-01 1995-08-02 Pechiney Rhenalu Aluminium sheets or strips having reproducible and improved optical properties
EP0690142A1 (en) * 1994-06-09 1996-01-03 The Furukawa Electric Co., Ltd. Aluminium alloy sheet for auto body sheet, method for manufacturing same and method for forming same
WO2001066276A1 (en) * 1998-12-10 2001-09-13 Alcoa Inc. An ultrafine matte finish roll for treatment for sheet products and method of production
EP1989009A1 (en) * 2006-02-27 2008-11-12 Nucor Corporation Low surface roughness cast strip and method and apparatus for making the same

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CH683188A5 (en) * 1991-01-11 1994-01-31 Alusuisse Lonza Services Ag Aluminum surfaces.
US6807836B2 (en) * 2001-10-09 2004-10-26 Ormet Corporation Method of applying a surface finish on a metal substrate and method of preparing work rolls for applying the surface finish
DE10221515C1 (en) * 2002-05-14 2003-11-13 Hydro Aluminium Deutschland Aluminium tube manufacturing method using dressing rollers for texturing outer surface of aluminium tube
US20060141219A1 (en) * 2004-12-23 2006-06-29 Benson Olester Jr Roll of a uniaxially oriented article having a structured surface
US20060138702A1 (en) * 2004-12-23 2006-06-29 Biernath Rolf W Method of making uniaxially oriented articles having structured surfaces
US20060141218A1 (en) * 2004-12-23 2006-06-29 Biernath Rolf W Uniaxially oriented articles having structured surface
US20060141220A1 (en) * 2004-12-23 2006-06-29 Merrill William W Uniaxially oriented article having a structured surface
US7418202B2 (en) 2005-08-04 2008-08-26 3M Innovative Properties Company Article having a birefringent surface and microstructured features having a variable pitch or angles for use as a blur filter
US9134471B2 (en) 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method
DE102016103539B4 (en) 2016-02-29 2018-09-20 Thyssenkrupp Ag Process for producing a multi-dimensional microstructured deep-drawable flat metal product and flat metal product

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
EP0665448A1 (en) * 1994-02-01 1995-08-02 Pechiney Rhenalu Aluminium sheets or strips having reproducible and improved optical properties
FR2715593A1 (en) * 1994-02-01 1995-08-04 Pechiney Rhenalu Aluminum strips or sheets with reproducible and improved optical properties.
EP0690142A1 (en) * 1994-06-09 1996-01-03 The Furukawa Electric Co., Ltd. Aluminium alloy sheet for auto body sheet, method for manufacturing same and method for forming same
WO2001066276A1 (en) * 1998-12-10 2001-09-13 Alcoa Inc. An ultrafine matte finish roll for treatment for sheet products and method of production
EP1989009A1 (en) * 2006-02-27 2008-11-12 Nucor Corporation Low surface roughness cast strip and method and apparatus for making the same
EP1989009A4 (en) * 2006-02-27 2012-10-17 Nucor Corp Low surface roughness cast strip and method and apparatus for making the same

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DE3713909A1 (en) 1988-11-10
KR880012783A (en) 1988-11-29
ES2037756T3 (en) 1993-07-01
ATE83180T1 (en) 1992-12-15
JPH01111850A (en) 1989-04-28
US4886713A (en) 1989-12-12
EP0289775B1 (en) 1992-12-09
GR3006950T3 (en) 1993-06-30
DE3876484D1 (en) 1993-01-21
EP0289775A3 (en) 1990-05-23

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