Extrusion of aluminium with hollow ribs

Details Extrusion of aluminium with hollow ribs Extrusion of aluminium with hollow ribs

B - Operations, Transporting

21

C

B21C 23/06 (2006.01) B21C 23/10 (2006.01) B21C 25/00 (2006.01) B21C 25/02 (2006.01)

Patent

CA 2070485

An extrusion die (1) comprises a mother die unit (11) having a plurality of tooth-shaped holes (111) in its central region interconnected with one another to form an extrusion outlet, and a daughter die unit (12) having a plurality of raised blocks (121). Each block is engaged in a respective one of the tooth-shaped holes with a peripheral gap maintained therebetween for extrusion therethrough of aluminium material into a hollow, panel-like aluminium workpiece having a plurality of elongate, hollow ribs interconnected by connecting strips. The extruded workpiece is further stretched into an aluminium mesh having a plurality of hollow ribs with a plurality of open spaced defined therein.

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