Invention Grant
- Patent Title: Method for manufacturing golden member and golden member
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Application No.: US17251303Application Date: 2019-04-25
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Publication No.: US12024764B2Publication Date: 2024-07-02
- Inventor: Kenya Karuishi
- Applicant: CITIZEN WATCH CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CITIZEN WATCH CO., LTD.
- Current Assignee: CITIZEN WATCH CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP 18131394 2018.07.11
- International Application: PCT/JP2019/017754 2019.04.25
- International Announcement: WO2020/012760A 2020.01.16
- Date entered country: 2020-12-11
- Main IPC: C22F1/02
- IPC: C22F1/02 ; C22F1/18 ; C23C8/34

Abstract:
A method for manufacturing a golden member includes a first heating step and a second heating step. The first heating step is a step of heating, in the atmosphere of mixed gas including nitrogen gas and water vapor, a raw material member including titanium or a titanium alloy at 670° C. or higher and 730° C. or lower for 150 minutes or more and 200 minutes or less. The second heating step is a step of heating, in the atmosphere of nitrogen gas or in the atmosphere of mixed gas including nitrogen gas and inert gas, the raw material member passing through the first heating step at 670° C. or higher and 730° C. or lower for 30 minutes or more and 120 minutes or less so as to obtain a golden member including titanium or a titanium alloy.
Public/Granted literature
- US20210254204A1 METHOD FOR MANUFACTURING GOLDEN MEMBER AND GOLDEN MEMBER Public/Granted day:2021-08-19
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