Method of producing surface features in sheet metal using...

Details Method of producing surface features in sheet metal using... Method of producing surface features in sheet metal using...

2005-01-18

2005-01-18

Jones, David (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

Using fixed die

C072S057000, C029S421100

Reexamination Certificate

active

06843089

ABSTRACT:
The present invention provides a method of embossing or imprinting patterns in the surface of a sheet metal article using superplastic forming at suitable SPF temperatures. A template having a pattern is interposed between a forming tool and a sheet metal blank. Gas pressure is applied to the sheet metal blank. This pressure forces the sheet metal against the surface of the lower forming tool having the template there between. The sheet metal blank is stretch formed according to the contours of the surface of the lower forming press and the template. The embossed and shaped sheet metal part is then removed from the forming tool.

REFERENCES:
patent: 2139631 (1938-12-01), Dresch et al.
patent: 2190659 (1940-02-01), Guerin
patent: 2368717 (1945-02-01), Marschner
patent: 3934441 (1976-01-01), Hamilton et al.
patent: 4162625 (1979-07-01), Simmons
patent: 4984348 (1991-01-01), Cadwell
patent: 6253588 (2001-07-01), Rashid et al.
patent: 6550124 (2003-04-01), Krajewski et al.

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