Extrusion press for indirect extrusion

Details Extrusion press for indirect extrusion Extrusion press for indirect extrusion

1978-11-24

1981-07-28

Larson, Lowell A.

Metal deforming

By extruding through orifice

Indirect extrusion

72255, 72272, 72273, B21C 2302, B21C 3504, B21C 3506

Patent

active

RE0306886

ABSTRACT:
An extrusion press for indirect extrusion has a sealing plate at one end of the bore of the billet container. This sealing plate extends a certain distance into the bore where it provides a seal against the wall of the bore. The plate also has a recess for accommodating a dummy block during extrusion, and a piston is provided behind the sealing plate to push the dummy block and butt end out of the recess at the end of extrusion.

REFERENCES:
patent: 3034642 (1962-05-01), Graham
patent: 3068515 (1962-12-01), Thomas
patent: 3695081 (1972-10-01), Gartner
patent: 3738144 (1973-06-01), Doudet
patent: 4198847 (1980-04-01), Russell et al.

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