JPS6439582A - Case working stock for wrist watch - Google Patents
Case working stock for wrist watchInfo
- Publication number
- JPS6439582A JPS6439582A JP19561787A JP19561787A JPS6439582A JP S6439582 A JPS6439582 A JP S6439582A JP 19561787 A JP19561787 A JP 19561787A JP 19561787 A JP19561787 A JP 19561787A JP S6439582 A JPS6439582 A JP S6439582A
- Authority
- JP
- Japan
- Prior art keywords
- plating
- inside peripheral
- blank
- electrocasting
- finished
- 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
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
PURPOSE:To improve working accuracy by forming a metallic member superior in machinability to a base stock by electrocasting plating, etc., on the inside peripheral face of a sintered blank and finishing the inside peripheral part to a finish size. CONSTITUTION:The sintered case blank 1 made of tungsten carbide, etc., for wrist watches is subjected to a plating treatment to 3-10mum thickness over the entire part then to a diffusion baking treatment for 30min at 900 deg.C in a vacuum. The inside peripheral face of the blank 1 is then subjected to an electrocasting plating by which an Ni plating layer 2 is formed to 300mum thickness. The parts susceptible to cracking are thus coated with the plating layer. The inside peripheral parts A, B and a biting groove C are finished by NC machining. Further, a glass engaging part D is finished by electric discharge machining, by which the deterioration in the strength of the tungsten carbide is prevented. The working accuracy is thus improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19561787A JPS6439582A (en) | 1987-08-05 | 1987-08-05 | Case working stock for wrist watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19561787A JPS6439582A (en) | 1987-08-05 | 1987-08-05 | Case working stock for wrist watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6439582A true JPS6439582A (en) | 1989-02-09 |
Family
ID=16344146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19561787A Pending JPS6439582A (en) | 1987-08-05 | 1987-08-05 | Case working stock for wrist watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6439582A (en) |
-
1987
- 1987-08-05 JP JP19561787A patent/JPS6439582A/en active Pending
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