Pre-bending of workpieces in dies in near net warm forging

Details Pre-bending of workpieces in dies in near net warm forging Pre-bending of workpieces in dies in near net warm forging

1998-09-01

2000-03-07

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72359, 72361, B21J 1302

Patent

active

060325070

ABSTRACT:
A female die of a closed die set for use in near net warm forging a part includes a cavity having a tapered upper portion and a lower portion. The upper portion is configured to support a workpiece at a preliminary position in the cavity, and to cause the workpiece to be pre-bent as it is moved through the upper portion of the cavity by a punch. The lower portion has a constant length and width so that the workpiece remains in the pre-bent shape during movement through the lower portion to the bottom end of the cavity. The workpiece is finally formed at the bottom end of the cavity to produce the part.

REFERENCES:
patent: 2014605 (1935-09-01), Zimmerman et al.
patent: 4222260 (1980-09-01), McDermott
patent: 4426872 (1984-01-01), Gatny

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