Alcan Technology & Management Ltd.

Gregoire Arnold

Miroslaw Plata

Martin Bolliger

Christophe Bagnoud

An extrusion device for manufacturing a profile from an extrusion block ( ), which is at least in part of metallic material, contains a container ( ) with container bore ( ) to accommodate an extrusion block ( ), a stem ( ), a shaping chamber and/or a shaping die ( ) and a heating facility ( ) arranged between the container bore ( ) and the die ( ). The heating facility ( ) contains a heating chamber ( ) in the form of a hollow metal tube featuring at least a first and a second heating section ( ) with heating chamber walls ( ) and means ( ) for inductively heating the heating chamber walls ( ). The first heating section ( ) exhibits a larger cross-sectional diameter than the&mdash;with respect to the direction of extrusion x&mdash;second heating section ( ), forming thereby a step-like narrowing in cross-section.

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Miege, Switzerland

Gregoire Arnold