Extrusion forging method therefor

Details Extrusion forging method therefor Extrusion forging method therefor

1981-09-23

1984-01-17

Larson, Lowell A.

Metal deforming

By extruding through orifice

With product handling

72345, B21C 3503

Patent

active

044257740

ABSTRACT:
Apparatus for extrusion forging essentially comprises a double action hydraulic press composed of an inner ram. Extrusion forging of a billet is accomplished by placing the billet in a container and inserting a punch into the container thereby forcing the billet through the die. After the extrusion forging, the punch is raised to a prescribed level and held there and the container is subsequently raised. Since the undeformed part of the billet is attached fast to the container, the rising container drags the extruded part of the billet out of the die and, at the same time, brings the undeformed part of the billet into powerful collision with the punch and consequently knocks the extrusion forged product out of the container.

REFERENCES:
patent: 1317238 (1919-09-01), Summey
patent: 3190101 (1965-06-01), Caisley
patent: 4165627 (1979-08-01), Boshold
patent: 4332156 (1982-06-01), Broodman

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