Hydro Aluminium Deutschland Gmbh

Hydro Aluminium Rolled Products Gmbh

Hydro Aluminum Deutschland Gmbh

Manfred Mrotzek

Henk-Jan Brinkman

Olaf Engler

Dietmar Schröder

Hartmut Janssen

Thomas Wirtz

Werner Kehl

Dietrich Wieser

Wolf-Dieter Finkelnburg

Pascal Wagner

Nico Eigen

Raimund Sicking

Marcel Lansing

Volker Sass

Gerhard Bermig

Stefan Schlüter

Stefan Schluter

Gerhard Berming

Thomas Husse

A method for producing a roll-clad aluminum workpiece and an associated roll-clad aluminum workpiece are provided, wherein a core ingot is produced from an aluminum alloy and at least one cladding piece is produced from a cladding material, wherein at least one groove is introduced into the core ingot and/or into a layer applied to the core ingot, wherein the cladding piece is inserted into the groove, and wherein the core ingot is hot-rolled after the cladding piece has been inserted, the width of the groove being equal to or less than the core ingot width. A use of such a roll-clad aluminum workpiece is also provided for producing a soldered workpiece, in particular a folding tube.

Method for producing a roll-clad aluminum workpiece, roll-clad aluminum workpiece, and use therefor

A composite material can include a carrier material that is coated, at least over part of the surface, with a corrosion protection layer made of an aluminum alloy. The composite material can provide a defined, effective, durable corrosion protection and simultaneously have a high recycling potential. The aluminum alloy of the corrosion protection layer can have the following composition in % by weight: remainder aluminum and unavoidable impurities, individually a maximum of 0.05% by weight, in total a maximum of 0.15% by weight.

Composition having a corrosion protection layer and process for the production thereof

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

The present invention relates to a method for producing AlMn strips or sheets for producing components by soldering, wherein a precursor material is produced from a melt which contains (in weight-percent) Si: 0.3-1.2%, Fe: &lE;0.5%, Cu: &lE;0.1%, Mn: 1.0-1.8%, Mg: &lE;0.3%, Cr&plus;Zr: 0.05-0.4%, Zn: &lE;0.1% , Ti: &lE;0.1% , Sn: &lE;0.15%, and unavoidable companion elements, whose individual amounts are at most 0.05% and whose sum is at most 0.15%, as well as aluminum as the remainder, wherein the precursor material is preheated at a preheating temperature of less than 520&deg; C. over a dwell time of at most 12 hours, wherein the preheated precursor material is hot rolled into a hot strip using a final hot rolling temperature of at least 250&deg; C., wherein the hot strip is cold rolled into a cold strip without intermediate annealing.

Method for producing AlMn strips or sheets

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Buxtehude, Germany

Manfred Mrotzek