JPS54101711A - Age hardening gold alloy - Google Patents
Age hardening gold alloyInfo
- Publication number
- JPS54101711A JPS54101711A JP807678A JP807678A JPS54101711A JP S54101711 A JPS54101711 A JP S54101711A JP 807678 A JP807678 A JP 807678A JP 807678 A JP807678 A JP 807678A JP S54101711 A JPS54101711 A JP S54101711A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- gold alloy
- age
- gold
- melted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Adornments (AREA)
Abstract
PURPOSE: To provide an age hardening ornamental gold alloy with superior hardenability by quenching a gold alloy contg. a specific amt. of Ni and Co, followed by age annealing.
CONSTITUTION: The gold alloy consists of Au; 58W92 wt%, Co; 2W21 wt% and the balance Ni, satisfying the ratio of Ni:Co 6:1W1:1. Pure gold metal is melted in a graphite crucible, and granular Ni and Co are added and melted to refine an alloy of the above compsn., which is then cast in an ingot case made of cast iron. This ingot is heated to 850°C, quenched in quenching oil of 200°C, and age annealed at 420°C for 2 hr in an atmosphere of H2 gas. Thus, a mirror polished alloy is obtd, having very high hardness and an everlasting golden color.
USE: This alloy is suitable for use as the case of a wristwatch since it has ornamental properties, discloration resistance and hardenability.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP807678A JPS5852542B2 (en) | 1978-01-27 | 1978-01-27 | Age hardenable gold alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP807678A JPS5852542B2 (en) | 1978-01-27 | 1978-01-27 | Age hardenable gold alloy |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54101711A true JPS54101711A (en) | 1979-08-10 |
JPS5852542B2 JPS5852542B2 (en) | 1983-11-24 |
Family
ID=11683239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP807678A Expired JPS5852542B2 (en) | 1978-01-27 | 1978-01-27 | Age hardenable gold alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5852542B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02185935A (en) * | 1989-01-12 | 1990-07-20 | Agency Of Ind Science & Technol | Gold alloy capable of coloring bright black and coloring method therefor |
US6863746B2 (en) * | 2001-08-02 | 2005-03-08 | Keith Weinstein | White gold compositions without nickel and palladium |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49134485U (en) * | 1973-03-12 | 1974-11-19 | ||
JPS5096394U (en) * | 1973-12-30 | 1975-08-12 | ||
JPS5112393U (en) * | 1974-07-15 | 1976-01-29 |
-
1978
- 1978-01-27 JP JP807678A patent/JPS5852542B2/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49134485U (en) * | 1973-03-12 | 1974-11-19 | ||
JPS5096394U (en) * | 1973-12-30 | 1975-08-12 | ||
JPS5112393U (en) * | 1974-07-15 | 1976-01-29 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02185935A (en) * | 1989-01-12 | 1990-07-20 | Agency Of Ind Science & Technol | Gold alloy capable of coloring bright black and coloring method therefor |
JPH0563533B2 (en) * | 1989-01-12 | 1993-09-10 | Kogyo Gijutsuin | |
US6863746B2 (en) * | 2001-08-02 | 2005-03-08 | Keith Weinstein | White gold compositions without nickel and palladium |
Also Published As
Publication number | Publication date |
---|---|
JPS5852542B2 (en) | 1983-11-24 |
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