Process for hot forming hollow spherical bodies

Details Process for hot forming hollow spherical bodies Process for hot forming hollow spherical bodies

1997-01-21

1998-03-17

Crane, Daniel C.

Metal deforming

With cutting

By shearing tool-couple

72356, 29890132, 298991, 25131516, B21D 5310

Patent

active

057274134

ABSTRACT:
A process for forming a hollow spherical body and the spherical structure so formed. The forming includes a first phase in which a blank is provided with a half having a spherical outer surface, a remaining part having two concentric, outer and inner walls with an axial hole that is closed by an intermediate plate. In a subsequent phase the outer wall of the remaining part of the blank is given a spherical shape in continuation of the spherical half obtained in the first phase of forming.

REFERENCES:
patent: 1591372 (1926-07-01), Gafvert
patent: 3339259 (1967-09-01), Johnson
patent: 3505718 (1970-04-01), Carlstrom
patent: 3689027 (1972-09-01), Grenier

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