Swiss Aluminium Ltd.

Heinz Bichsel

Jurgen Timm

Heinrich Zoller

Miroslav Pirner

Theodore J Crona

Kurt Buxmann

Martin Werner

Ivan Gyongyos

Pedro Rodrigues

Kurt Neufeld

Frank Wehner

Margarete Bloeck

An aluminum alloy that is suitable as material for cathode foils in electrolytic capacitors comprises

Cathode foil for electrolytic capacitors

A substrate for a lithographic printing plate is made of a rolled aluminum alloy sheet of following composition: 0.8 to 2.0% Fe, up to 0.8% Si and up to 1.0% Mn, such that the sum of the Si and Mn contents lies between 0.3 and 1.3%, up to 0.3% Cu, up to 0.8% Mg, up to 2.0% Zn and 0.3% each of other constituents in total up to 1.0%, rest aluminum. A process for manufacturing such a substrate is such that this composition is cast as a 5 to 12 mm thick strip then fabricated to a 0.03 to 0.6 mm thick rolled sheet.

Substrate for a lithographic printing plate

Process for manufacturing a substrate for a lithographic printing plate

A process for manufacturing thin strip or foil of aluminum of at least 99.9% purity is such that, after casting, the cast material is rolled to final thickness at temperatures between 20.degree. and 420.degree. C., whereby at thicknesses below at least 8 times the final thickness no intermediate anneals are performed and rolling is carried out at temperatures no higher than 250.degree. C. After a recrystallizing final anneal at temperatures between 480.degree. and 640.degree. C. the material exhibits mainly cube texture.

Process for manufacturing aluminum thin strip and foil having a large

A composition and method whereby aluminum scrap, including consumer scrap, is recycled into aluminum sheet and aluminum containers. Aluminum scrap is melted in a heated furnace to form a melt composition. The melt is adjusted to form the present composition, consisting essentially of silicon, 0.1-1.0%; iron 0.1-0.9%; manganese 0.4-1.0%; magnesium 1.3-2.5%; copper 0.05-0.4%; and titanium, 0-0.2%, the balance being essentially aluminum. Aluminum scrap comprising consumer scrap, plant scrap, and can making scrap is heated to form the melt composition, which requires a minimum amount of adjustment to arrive at the present alloy composition. The composition is then cast and fabricated into sheet having strength and formability properties making it suitable for container manufacture. Container manufacture according to the process and composition of the present invention comprises drawn-and-ironed can body manufacture and easy-opening end manufacture. Sheet fabrication according to the present invention comprises continuously casting the molten composition to produce a moving strip; hot rolling the moving strip at casting speed; coiling and allowing the hot rolled strip to cool; and cold rolling the hot rolled strip to final gauge.

Continuous strip casting of aluminum alloy from scrap aluminum for

Filler metal for welding AlZnMg type alloys raises the resistance to stress corrosion without increasing the susceptibility to exfoliation corrosion. The composition of the filler metal includes a copper addition which suppresses weld boundary corrosion while additions of manganese, titanium, chromium and zirconium inhibit weld cracking. High weld strengths are attained using the said filler metal.

Filler metal in a welded assembly

Filler metal for welding aluminum base alloys obtains improved resistance to stress corrosion cracking. The composition of the filler metal includes a copper addition which suppresses weld boundary corrosion. High weld strengths are attained using the said filler metal.

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Neuhausen am Rheinfall, Switzerland

Heinz Bichsel