Metal deforming – With temperature modification of tool or of specified... – Of tool
Patent
1989-09-28
1991-03-05
Larson, Lowell A.
Metal deforming
With temperature modification of tool or of specified...
Of tool
723532, B21J 1302
Patent
active
049968637
ABSTRACT:
Disclosed is a method and apparatus for hot forging an elongated cylindrical hot billet formed of lightweight metal alloy or metal matrix composite material into an integral high strength structural member having at least two extensive walls projecting outwardly in different directions from the billet axis, with principal metal grain structure running approximately parallel to the outward extent of the walls. The hot forging is accomplished by bringing a plurality of radially convergent hot die segments from a full open release position to an intermediate position where they first convergently engage the hot billet, and gradually further converging the die segments to a closed position to forge the billet by engaging them with a pyramidal or conical frustum cavity formed in a press member, which cavity conforms to the external configuration of the die segments in the closed position.
REFERENCES:
patent: 2114596 (1938-04-01), Franghia
patent: 2382359 (1945-08-01), Weightman
patent: 3103833 (1963-09-01), Lejdegard
patent: 3349596 (1967-10-01), Pavlovec
patent: 3406555 (1968-10-01), Fuchs, Jr.
patent: 3456479 (1969-07-01), Matveev et al.
Aluminum Precision Products, Inc.
Fowler Allan R.
Larson Lowell A.
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