Yellow karat gold casting alloys

Details Yellow karat gold casting alloys Yellow karat gold casting alloys

1994-05-02

1995-01-24

Yee, Deborah

Alloys or metallic compositions

Gold base

Silver containing

420512, 420587, C22C 502, C22C 3000

Patent

active

053840895

ABSTRACT:
The disclosure relates to yellow karat gold metal alloys particularly suited for the casting of jewelry articles such as rings, bracelets, earrings, and the like. The alloys include varying amounts of germanium up to about one percent by weight of the total volume of the alloy which serves as an oxygen scavenger, and which may be recycled along with scrap alloy material after casting. By varying the amounts of the grain refiners, it is possible to totally eliminate the use of deoxidizing agents such as silicon and boron and the accompanying disadvantageous effects of these elements, to result in a superior cast structure.

REFERENCES:
patent: 4444719 (1984-04-01), Sakakibara et al.
patent: 4804517 (1989-02-01), Schaffer
patent: 4917861 (1990-04-01), Schaffer et al.
patent: 4943483 (1990-07-01), Ingersoll et al.

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