Hydro Aluminium Rolled Products Gmbh

Hydro Aluminium Deutschland Gmbh

Werner Kehl

Henk-Jan Brinkman

Olaf Engler

Dietmar Schröder

Natalie Hörster

Thomas Wirtz

Dietmar Schroder

Natalie Horster

Kai-Friedrich Karhausen

Manfred Mrotzek

Eike Brünger

Eike Brunger

The invention relates to a strip consisting of an aluminum material for producing components with improved bending behavior and exacting shaping requirements, a method for producing the strip and the use of sheets produced from the strip according to the invention. The strip has a core layer of an AlMgSi alloy and at least one outer aluminum alloy layer arranged on one or both sides, made from a non-hardenable aluminum alloy, wherein the at least one outer aluminum layer has a lower tensile strength in the (T4) state than the AlMgSi layer, wherein the strip has a uniform strain (A) in the (T4) state of more than 23% transverse to the rolling direction and, at a thickness of 1.5 mm-1.6 mm, achieves a bending angle of less than 40&#xb0; in a bending test.

Aluminium composite material with AlMgSi core layer

A flat, rolled semi-finished product made of an aluminum alloy and a method of producing the product are disclosed. The aluminum alloys has the following alloy proportions in weight percentages: 2&#x2266;Mg&#x2266;5, Mn&#x2266;0.5, Cr&#x2266;0.35, Si&#x2266;0.4, Fe&#x2266;0.4, Cu&#x2266;0.3, Zn&#x2266;0.3, Ti&#x2266;0.15, other elements totaling no more than 0.15 and separately not exceeding 0.05, and the remainder consists of Al. The semifinished product is rolled from a bar and, during the rolling process, is subjected to at least one intermediate tempering between two cold reduction passes and to a final soft-annealing in a chamber furnace. A semi-finished product of this type does not have any flow lines after shaping or deep-drawing if the degree of reshaping before the first intermediate tempering is equal to at least 50%, the degree of reshaping before the final soft-annealing is no greater than 30%, and the semifinished product is drawn by 0.1 to 0.5% after the final soft-annealing.

Planar, rolled semi-finished product of aluminum alloys

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Jork, Germany

Werner Kehl