Swiss Aluminium Ltd.

Alusuisse Technology & Management Ltd.

Alcan Technology & Management Ltd.

Swiss Aluminum Ltd.

Ulf Hodel

Adolf Ames

Alfred Wagner

Diethelm Wompner

Gregor Rotzinger

Reinhold Gitter

A container, in particular a container with a tube-shaped wall, made of a light metal alloy for use as a reaction chamber in a process for manufacturing wafers. The container wall is made by way of extrusion or ring-rolling, and the container wall is made from a metallic, aluminum-based material with a magnesium content between 1.2 and 2.0 wt. %. The elements Cu, Fe, Si are present in amounts less than 0.5 wt. %. This container wall may also be shaped in one piece as container with a base plate.

Container made of a light metal alloy and process for its manufacture

A process for extruding a section or the like body from an ingot is such that an ingot is introduced into a bore of a container and, by means of an extrusion stem, is fed in the direction of extrusion into a shape-giving opening in a die. Before the ingot enters the die opening, it is pushed out of the container by an amount corresponding to the width (t) of a collar whereupon a disk-shaped slice is sheared off the free end of the ingot and removed. The free end of the ingot is then pushed onto the die opening. In order to carry out this process a shearing tool is provided after the end of the container facing the die and a moveable shearing blade positioned over that entrance to the container bore The disk-shaped slice should preferably be sheared away together with a residual butt of the previously extruded ingot which faces away from the die. To that end a shearing tool with two shearing blades is provided and can be moved radially with respect to the longitudinal axis (A) of the container bore.

Process for extruding a section or the like from an ingot and a device

A process for extruding a section or the like body from an ingot is such that an ingot is introduced into a bore of a container and, by means of an extrusion stem, is fed in the direction of extrusion into a shape-giving opening in a die. Before the ingot enters the die opening, it is pushed out of the container by an amount corresponding to the width (t) of a collar whereupon a disk-shaped slice is sheared off the free end of the ingot and removed. The free end of the ingot is then pushed onto the die opening. In order to carry out this process, a shearing tool is provided after the end of the container facing the die and a movable shearing blade positioned over that entrance to the container bore. The disk-shaped slice should preferably be sheared away together with a residual butt of the previously extruded ingot which faces away from the die. To that end, a shearing tool with two shearing blades is provided and can be moved radially with respect to the longitudinal axis (A) of the container bore.

A process and device for manufacturing a section, in particular a hollow section, especially from light metal billets. To this end a plurality of billets is simultaneously forced through the shape-giving cross-section of a die and united to form the matrix metal for the section. For this purpose at least two bores in the container are aligned with the shape-giving cross-section of the die.

Process and device for manufacturing a section, in particular a hollow

A process and apparatus for the indirect extrusion of hollow sections over a mandrel having a diameter d.sub.D from a plurality of billets each having a diameter d.sub.on wherein the volume throughput of metal is greater than that obtained by the indirect extrusion over a mandrel of said hollow sections from a single hollow billet under the same extrusion force thereby increasing productivity wherein the diameter of the mandrel d.sub.D with respect to the diameter d.sub.on of the billet to be extruded over the mandrel is d.sub.D &lt;0.4 d.sub.on.

Extrusion press for manufacturing extruded sections from metal billets

Manufacture of a light metal shock absorber by impact extrusion of a light metal blank whereby, during the impact extrusion process itself, a steel strip is brought into contact with the base of the part which becomes free of obstructive light metal oxide as a result of impact extrusion and is as a result metallically bonded to the said base. The steel component of the composite body is provided with a steel ring which is welded or otherwise appropriately joined during or after the extrusion step. The light metal sleeve can be welded or otherwise appropriately joined to light metal after impact extrusion. The production of a light metal shock absorber is a special case of plastic deformation of light metal and the principles which lead to metallic bonding between light metal and steel or another metal are also valid here.

Process for manufacturing plastically deformed light metal objects and

Manufacture of a light metal shock absorber by impact extrusion of the light metal of a steel-light metal composite blank, wherein the metallic bonding of the composite blank is achieved by coextrusion. The steel component on the bottom face of the light metal shock absorber is provided with a steel ring which is welded or otherwise appropriately joined during or after impact extrusion. Also the light metal sleeve of the shock absorber can, after impact extrusion, be welded or otherwise appropriately joined to light metal.

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Engen, Germany

Ulf Hodel