Producing piston ring, comprises providing base body comprising cast iron by mechanical processing with web forming tread region, polishing tread surface of web, and applying physical vapor deposition-layer on polished tread surface

摘要

Producing piston ring (1), comprises providing a base body (2) comprising cast iron by mechanical processing with at least one web (7) forming a tread region (3), polishing tread surface of the respective web, and applying at least one physical vapor deposition-layer on the polished tread surface and at least the peripheral edge regions of the web. An independent claim is also included for the oil scraper piston ring produced by the above process.