JPS5798668A - Case component for watch - Google Patents
Case component for watchInfo
- Publication number
- JPS5798668A JPS5798668A JP17293980A JP17293980A JPS5798668A JP S5798668 A JPS5798668 A JP S5798668A JP 17293980 A JP17293980 A JP 17293980A JP 17293980 A JP17293980 A JP 17293980A JP S5798668 A JPS5798668 A JP S5798668A
- Authority
- JP
- Japan
- Prior art keywords
- watch
- components
- case
- sulphurizing
- nitriding
- 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.)
- Pending
Links
Abstract
PURPOSE: To form sulfide or nitride on the surface for black color formation, by processing sulphurizing and nitriding for case components for watch.
CONSTITUTION: Sulphurizing and nitriding processing is applied to case components such as watch case and watch band. For example, when package components of iron base alloy are heated at 560W570°C for 30W300min in a salt bath contg. cyanide, carbonate or metallic sulfide of an alkali metal as major components, black compound such as FeS or Fe3N can be formed on the surface to the depth of about 0.5mm.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17293980A JPS5798668A (en) | 1980-12-08 | 1980-12-08 | Case component for watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17293980A JPS5798668A (en) | 1980-12-08 | 1980-12-08 | Case component for watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5798668A true JPS5798668A (en) | 1982-06-18 |
Family
ID=15951144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17293980A Pending JPS5798668A (en) | 1980-12-08 | 1980-12-08 | Case component for watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5798668A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59122602U (en) * | 1983-01-31 | 1984-08-18 | 日新電機株式会社 | Resistance output circuit |
US6139296A (en) * | 1996-10-11 | 2000-10-31 | Sanyo Electric Co., Ltd. | Method for treating metal surface, rotary shaft for refrigerant compressor treated by the method, vane for refrigerant compressor treated by the method, and refrigerant compressor using the same |
-
1980
- 1980-12-08 JP JP17293980A patent/JPS5798668A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59122602U (en) * | 1983-01-31 | 1984-08-18 | 日新電機株式会社 | Resistance output circuit |
US6139296A (en) * | 1996-10-11 | 2000-10-31 | Sanyo Electric Co., Ltd. | Method for treating metal surface, rotary shaft for refrigerant compressor treated by the method, vane for refrigerant compressor treated by the method, and refrigerant compressor using the same |
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