Method of and apparatus for forging hollow blank member

Details Method of and apparatus for forging hollow blank member Method of and apparatus for forging hollow blank member

1984-11-09

1985-12-31

Gilden, Leon

Metal deforming

By application of fluent medium, or energy field

72370, 72466, B21D 1900

Patent

active

045612749

ABSTRACT:
A method of and an apparatus for shaping a hollow blank member by a forging operation is provided. The interior of a hollow blank member is filled with a liquid pressure medium which is enclosed therein in sealed condition. An external pressure is applied to the hollow blank member, and the pressure of the pressure medium is maintained as an internal pressure which opposes the external pressure, and part of the pressure medium is discharged externally while applying a desired plastic deformation to the hollow blank member.

REFERENCES:
patent: 3889506 (1975-06-01), Shaffer
patent: 3964284 (1976-06-01), Boultinghouse
patent: 4299105 (1981-11-01), Whitworth

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