Metal deforming – By extruding through orifice – With product handling
Patent
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
Sato Kiyoshi
Shimizu Toru
Shinozaki Kichitaro
Agency of Industrial Science and Technology
Kelman Kurt
Larson Lowell A.
Ministry of International Trade and Industry
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