Radial forging method

Details Radial forging method Radial forging method

1982-02-08

1988-02-02

Spruill, Robert L.

Metal deforming

By three or more coacting relatively movable tools

Concurrently actuated tools

72367, 72370, 72398, 72 76, B21D 4100

Patent

active

047222166

ABSTRACT:
A tubular metal workpiece undergoes radial forging employing shrink forming. A multiplicity of dies are arranged circumferentially around the workpiece and urged radially inwardly in a first shrink forming pass to decrease the diameter of the workpiece. The dies are retracted, the workpiece is rotated slightly and another shrink forming pass is performed. The workpiece is then advanced axially, and the procedure described above is repeated. Procedures are employed to prevent torsional deformation and radially outward extrusion of metal in the gaps between adjacent dies.

REFERENCES:
patent: 1810698 (1931-06-01), Diescher
patent: 2225345 (1940-12-01), Lemoreaux
patent: 2256740 (1941-09-01), Gup
patent: 2577303 (1951-12-01), Bohlander
patent: 2617319 (1952-11-01), Richards
patent: 2944448 (1960-07-01), Broatz
patent: 3461710 (1969-08-01), Luedi et al.
patent: 3566651 (1971-03-01), Tlaker
patent: 3753365 (1973-08-01), Kralowetz
patent: 3792603 (1974-02-01), Orain
"The Uncommon Approach to Metalforming," .COPYRGT.1980, Grotnes Metal-forming Systems, Inc., pp. 26-37.

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