Method of manufacture of a copper watch case

Details Method of manufacture of a copper watch case Method of manufacture of a copper watch case

1989-12-20

1991-06-04

Dean, Richard O.

Metal treatment

Compositions

Heat treating

148 2, 148 127C, 295274, C21D 178, G04B 3722, C23C 1606, C23C 3000

Patent

active

050211013

ABSTRACT:
The method of manufacture of this watch case consists in employing a material including at least 95% copper in its composition, the remainder being made up of elements adapted to increase the mechanical strength of the copper while avoiding the toxic elements beryllium and cadmium. Thanks to this material the watch case may be stamped out in a single operation, hardened, then covered with a protective layer deposited galvanically or by a PVD process.

REFERENCES:
patent: 1535542 (1925-04-01), Price
patent: 2234552 (1941-03-01), Dean et al.
patent: 2393906 (1946-01-01), Hensel et al.
patent: 4758280 (1988-07-01), Bergmann et al.
Chem. Abs. 111(8): 62334f, 4/88.

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