Title:
A manufacturing method of a piston ring
Document Type and Number:
Japanese Patent JP5950999
Kind Code:
B2
Abstract:
A method for producing a recessed steel piston ring provided with a wear-resistant layer includes generating a main body that has a recess on the running surface side and that, in the region where a lower flank of the main body transitions into the running surface is worked so that a chamfer is created, providing the running surface and at least portions of the chamfer with at least one wear-resistant layer, nitriding the circumferential surface and the lower and upper flanks of the main body that are not provided with the wear-resistant layer so that a section having a defined width and having no nitride layer remains on the flank adjacent the chamfer, and removing the at least one wear-resistant layer to such an extent that a substantially sharp, but unnitrided functional edge is created in the region where the lower flank transitions into the running surface.
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Inventors:
Peter-Klaus Esser
Application Number:
JP2014500250A
Publication Date:
July 13, 2016
Filing Date:
February 02, 2012
Export Citation:
Assignee:
FEDERAL-MOGUL BURSCHEID GMBH
International Classes:
F16J9/26; C23C14/06; F02F5/00
Domestic Patent References:
| JP2009287730A | ||||
| JP2008501911A | ||||
| JP8184375A | ||||
| JP2006152981A | ||||
| JP54118958U |
Foreign References:
| DE10221800A1 | ||||
| DE102005023627A1 | ||||
| DE10359802B3 | ||||
| GB2136089A |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno