Invention Grant
- Patent Title: Manufacturing method of machine component
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Application No.: US14113573Application Date: 2012-04-25
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Publication No.: US09611533B2Publication Date: 2017-04-04
- Inventor: Takumi Fujita , Kazuhiro Yagita
- Applicant: Takumi Fujita , Kazuhiro Yagita
- Applicant Address: JP Osaka
- Assignee: NTN CORPORATION
- Current Assignee: NTN CORPORATION
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2011-098274 20110426; JP2012-098661 20120424
- International Application: PCT/JP2012/061061 WO 20120425
- International Announcement: WO2012/147776 WO 20121101
- Main IPC: C23C8/34
- IPC: C23C8/34 ; C21D1/76 ; C21D9/40 ; C23C8/32 ; C21D1/06 ; C23C8/02 ; C23C8/80 ; C23C28/04 ; F16C33/64
Abstract:
A method of manufacturing a machine component includes the steps of: preparing a member made of steel; forming a film containing vanadium at a surface by subjecting the member to oxidation; and forming a nitrogen-enriched layer by heating the member having the film formed in a heat treatment gas atmosphere containing nitrogen gas and absent of ammonia gas for carbonitriding.
Public/Granted literature
- US20140048179A1 MANUFACTURING METHOD OF MACHINE COMPONENT Public/Granted day:2014-02-20
Information query
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