Invention Grant
- Patent Title: Solid lubricant-coated steel articles, method and apparatus for manufacturing thereof and quenching oil used in the manufacturing
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Application No.: US15772655Application Date: 2016-10-25
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Publication No.: US10704111B2Publication Date: 2020-07-07
- Inventor: Mikael Berg , Mikael Fällström , Boris Zhmud
- Applicant: APPLIED NANO SURFACES SWEDEN AB , BODYCOTE VÄRMEBEHANDLING AB
- Applicant Address: SE Uppsala SE Angered
- Assignee: APPLIED NANO SURFACES SWEDEN AB,BODYCOTE VÄRMEBEHANDLING AB
- Current Assignee: APPLIED NANO SURFACES SWEDEN AB,BODYCOTE VÄRMEBEHANDLING AB
- Current Assignee Address: SE Uppsala SE Angered
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5793094a
- International Application: PCT/SE2016/051034 WO 20161025
- International Announcement: WO2017/078592 WO 20170511
- Main IPC: C21D1/58
- IPC: C21D1/58 ; C23C8/26 ; C23C8/50 ; C23C8/80 ; C21D1/06 ; C10M169/04
Abstract:
A method for manufacturing of steel articles comprises nitriding (210) a steel article at a nitrification temperature in the interval 350-650° C., giving a nitrided steel article. The nitrided steel article is quenched (220) in a reactive quenching oil from the nitrification temperature. The reactive quenching oil comprises at least one of S, P, B, Mo and W. Thereby, the quenching additionally comprises coating (222) of the nitrided steel article by a solid lubricant comprising at least one of S, P, B, Mo and W. An apparatus for manufacturing of steel articles, a quenching oil and a steel article produced by the method are also disclosed.
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