B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
76/4
B21C 25/10 (2006.01) B21C 3/18 (2006.01) B23P 15/24 (2006.01) B28B 3/20 (2006.01)
Patent
CA 1180208
MONOLITH EXTRUSION DIE CONSTRUCTION METHOD Abstract of the Disclosure In accordance with a preferred embodiment, a monolith extrusion die is formed by separately drilling matching feed holes for extruded material in each of two plates. In one plate the feed holes are shallow and carefully drilled for accurate align- ment with the extrusion slots of the die. In the other plate, the holes are accurately located at the drill entry point, but thereafter rapidly drilled without regard to drift. The plates are then bonded together to form my die. Other methods of forming an extrusion die using two plates are disclosed.
408019
General Motors Corporation
Gowling Lafleur Henderson Llp
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