Die for extruding elongate articles having longitudinal...

Details Die for extruding elongate articles having longitudinal... Die for extruding elongate articles having longitudinal...

B - Operations, Transporting

21

C

B21C 25/00 (2006.01) B21C 25/04 (2006.01) B21C 25/10 (2006.01)

Patent

CA 2138811

A die (1) has a thin rod-shaped mandrel (2) tightly surrounded by the segments (11) of a gripper (3), the mandrel {2) being placed in the axial bore (5) of a mandrel holder (4). The inner peripheral surface of the axial bore (5) is shrinkage-fitted or otherwise fixedly fitted on outer peripheral surfaces of the grip- ping segments (11), thereby urging them to keep the thin rod-shaped mandrel (2) in place in the holder (4). The mandrel can have an extremely fine orifice forming end (9) of a diameter of 3 mm or less, such an fine can be prepared easily and precisely, and maintenance of the die can be done inexpensively when the orifice forming end will have been worn out or damaged.

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