Method for producing a piston ring

US9132517B2 · kind B2 · utility

Assignee

• Federal-Mogul Burscheid GmbH · DE

Inventor

• Peter Esser · Kürten, DE

Key dates

• Filing date: Sep 2, 2011
• Grant date: Sep 15, 2015
• Expiry date: Sep 22, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49281
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A piston ring, is produced by providing, on the radially outer circumferential surface of a ring-shaped metallic main body, a recess, the metallic main body having a radially outer circumferential surface, a radially inner circumferential surface, and flank surfaces interposed therebetween providing the recess with a contour that deviates from a cylindrical shape at least on the bottom of the recess, providing at least one wear-resistant layer on the outer circumferential surface, including the recess, and at least partially removing an area of the at least one wear-resistant layer on the outer circumferential surface and including an area corresponding to a scraping edge, thereby forming a land having a predefinable width.