JPS5739149A - Exterior parts for portable watch - Google Patents
Exterior parts for portable watchInfo
- Publication number
- JPS5739149A JPS5739149A JP11319580A JP11319580A JPS5739149A JP S5739149 A JPS5739149 A JP S5739149A JP 11319580 A JP11319580 A JP 11319580A JP 11319580 A JP11319580 A JP 11319580A JP S5739149 A JPS5739149 A JP S5739149A
- Authority
- JP
- Japan
- Prior art keywords
- corrosion resistance
- exceeded
- upper limit
- plating
- enhances
- 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
- 230000007797 corrosion Effects 0.000 abstract 6
- 238000005260 corrosion Methods 0.000 abstract 6
- 238000007747 plating Methods 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract 2
- 229910000510 noble metal Inorganic materials 0.000 abstract 2
- 229910000990 Ni alloy Inorganic materials 0.000 abstract 1
- 230000003213 activating effect Effects 0.000 abstract 1
- 239000010953 base metal Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
PURPOSE: To obtain an exterior parts of a portable watch with excellent corrosion resistance and mechanical properties, especially, strength by applying plating of a noble metal base metal to a Ni alloy base material containing Cr, Mo, Cu, Ti and Fe added therein in good balance.
CONSTITUTION: An exterior parts is obtained by plating an alloy base material comprising, in the wt%, 15W25 Cr, 2W5 Mo, 1W4 Cu, 5W25 Fe, 0.3W1.5 Ti, 0.08 or less C and the remainder of Ni and inevitable impurities with a noble metal or an alloy thereof. Ni in said base material imparts extremely excellent carrosion resistance to said parts and Cr enhances strength and corrosion resistance and, corresponding to desired corrosion resistance after activating treatment at the time of plating, the upper and the lower limits are determined and, when the upper limit is exceeded, embrittleness is induced. Mo enhances corrosion resistance when Cl- is contained but, when the upper limit is exceeded, processing property is extremely reduced. Cu also similar effects and enhances plating property but increasement thereof is not necessarily good from a standpoint of corrosion resistance. Fe dissolves lowering of processing property due to Cr and Mo and makes said parts inexpensive but, when the upper limit it exceeded, corrosion resistance is lost. Ti enhances strength and processing property but, when the upper limit is exceeded, it brings about embrittleness and low solderability. C is limited due to the necessity of fixing the same by Ti.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11319580A JPS5739149A (en) | 1980-08-18 | 1980-08-18 | Exterior parts for portable watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11319580A JPS5739149A (en) | 1980-08-18 | 1980-08-18 | Exterior parts for portable watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5739149A true JPS5739149A (en) | 1982-03-04 |
Family
ID=14605953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11319580A Pending JPS5739149A (en) | 1980-08-18 | 1980-08-18 | Exterior parts for portable watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5739149A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463335A (en) * | 1987-09-02 | 1989-03-09 | Yasuji Yoshida | Agent for keeping freshness of raw vegetable product |
| US4943552A (en) * | 1985-05-20 | 1990-07-24 | Honshu Seishi Kabushiki Kaisha | Process for preparing a gas absorbent |
-
1980
- 1980-08-18 JP JP11319580A patent/JPS5739149A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943552A (en) * | 1985-05-20 | 1990-07-24 | Honshu Seishi Kabushiki Kaisha | Process for preparing a gas absorbent |
| JPS6463335A (en) * | 1987-09-02 | 1989-03-09 | Yasuji Yoshida | Agent for keeping freshness of raw vegetable product |
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