Reverse extrusion press

Details Reverse extrusion press Reverse extrusion press

1977-11-02

1982-08-24

Husar, Francis S.

Metal deforming

By extruding through orifice

Indirect extrusion

72265, 72272, B21C 2300, B21C 2321, B21C 2700

Patent

active

043454500

ABSTRACT:
In an indirect extrusion drawing press comprising a fixed crosspiece to which is fixed a tubular ram which is perforated by an axial orifice for the removal of the wire, a fixed bearing member, a movable crosspiece which is moved by a main jack bearing against the bearing member, a container in which is provided the bore of the billet, and which is interposed between the movable crosspiece and the ram, and a container bottom which is placed on the movable crosspiece along the axis of extrusion and which presses against the container during extrusion, the container being driven towards the ram by the movable crosspiece. A mechanism is provided for fixing the container relative to the movable crosspiece during extrusion so that auxiliary jacks, provided for moving the container independently of the crosspiece, can be used during extrusion to assist the main jack.

REFERENCES:
patent: 3664168 (1972-05-01), Shtin
"Indirect Extrusion of Non-Ferrous Tubes", read at ASM Metalworking Forum, Apr. 5-7, 1976, by F. J. Zilges, pp. 1-28.

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