Hollow die and an apparatus for continuous extrusion forming...

Details Hollow die and an apparatus for continuous extrusion forming... Hollow die and an apparatus for continuous extrusion forming...

B - Operations, Transporting

21

C

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

Patent

CA 2145332

A hollow die (5) for extruding elongate hollow arti- cles has a thick cylindrical body (15), whose cavity (23) extends in the axial direction of the die. This cavity receives and holds a core (7), a female member (21) and other necessary parts in alignment with each other in the axial direction. The hollow die is thus of such a high rigidity that higher extrusion rates will not cause any intolerable distortion or the like deformation in the die, thereby enhancing the productivity and the dimen- sional precision of the extrudates. The hollow die is particularly adapted for use with the continuous extru- sion forming apparatuses.

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