Vereinigte Aluminium-werke Aktiengesellschaft

Vereingte Aluminum-werke Aktiengesellschaft

Friedrich Ostermann

Winfried Griep

Gerhard Sollner

Christian M Dumont

Hans-Heinrich Plath

Rainer Balbach

A method and equipment for manufacturing a light metal vehicle wheel that has a rim drop base and a club-shaped thickened portion extending axially outward. The club-shaped portion has a tread on its outside surface for use in case of flat tire and has rim horns at its outer end. The method and equipment include pressing the rim horns radially inward by compression rings of a mold die. A radial inner surface of the club-shaped thickened portion is machined by chip removal so as to form an undercut next to the rim horn.

Method for the manufacture of a light metal vehicle wheel

A deep drawable sheet or strip of metal, preferably aluminum or an aluminum alloy having a surface treated for deep drawing characterized in that the surface has a microroughness, Ra, ranging between about 0.1 and 0.8 .mu.m and a uniform, honeycomb-shaped structure, wherein the honeycomb diameter ranges between about 20 .mu.m and about 200 .mu.m is provided.

Deep drawable aluminum sheet or strip

Growing community of inventors

Meckenheim-merl, Germany

Friedrich Ostermann