Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1977-09-23
1979-05-01
Lanham, C. W.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72343, 72264, 72255, B21C 2301, B21C 2318, B21C 2504, B21C 3504
Patent
active
041517342
ABSTRACT:
A far less expensive process of manufacturing heavy-duty welding necks, nozzles, and similar connector elements comprising cylindrical bodies with a radial flange at one end, is provided through the utilization of a centered metal-displacement disc which contacts a radially flanged heated billet after the forging operation and forces the metal under the centered disc and interiorly of the radially-flanged portion into the die cavity and around a rounded centrally disposed supporting member which initially is in contact with the underside of the work-piece. This forward displacement action is continued until the advance portion of the work-piece contacts a circular forging knife which is carried on the interior of the female forging die member. The female forging die member is then lifted, after which the metal-displacement disc proceeds to push the remaining portion of the work-piece and the rounded centrally disposed supporting member through the area within the circular forging knife and through and out of the female forging die member.
Besides the benefit of the reduced cost of manufacture, the forward displacement in the manner described kneads or works the metal of the heated work-piece to an extent which produces much improved metallurgical results.
REFERENCES:
patent: 1040160 (1912-10-01), Davis
patent: 2909281 (1959-10-01), Koskinen
patent: 3149416 (1964-09-01), Moore
patent: 3365997 (1968-01-01), Price
patent: 3412593 (1968-11-01), Price
patent: 3771480 (1973-11-01), Johnson
Gurley D. M.
Lanham C. W.
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