Process for modifying the characteristics of a metal surface

Details Process for modifying the characteristics of a metal surface Process for modifying the characteristics of a metal surface

1993-07-15

1994-09-13

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Assembling or joining

29904, 29DIG37, B21K 2500

Patent

active

053456670

ABSTRACT:
The invention relates to a process for modifying the characteristics of a metal (2) surface (1), by application to the surface (1) of a perforated sheet (3) of another metal (4), the perforated sheet (3) having to be secured onto the surface (1) by die stamping. According to the invention the perforated sheet (3) is shaped so that each perforation (6) has a lip (5) and a lip end (7); the sheet (3) thus shaped is applied to the surface (1), the lips (5) of the perforations (6) forming protuberances directed towards the surface (1); the shaped sheet (3) is crimped by die stamping onto the surface (1), the straightening of the lips (5) and of the lip ends (7) which is associated with the flow of material (2) of the surface (1) into the perforations (6) producing a reliable anchorage of the sheet on the surface.

REFERENCES:
patent: 2050993 (1936-08-01), Bush
patent: 3100340 (1963-08-01), Goepfrich
patent: 3100930 (1963-08-01), Nihlen et al.
patent: 3831258 (1974-08-01), Elbert et al.
patent: 5079825 (1992-01-01), Matsui et al.
patent: 5121537 (1992-06-01), Matsui et al.

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