JPS5798668A - Case component for watch - Google Patents

Case component for watch

Info

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
Application number
JP17293980A
Other languages
Japanese (ja)
Inventor
Yoshio Morita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP17293980A priority Critical patent/JPS5798668A/en
Publication of JPS5798668A publication Critical patent/JPS5798668A/en
Pending legal-status Critical Current

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
JP17293980A 1980-12-08 1980-12-08 Case component for watch Pending JPS5798668A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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