EP 1920175 A1 20080514 - METHOD FOR MANUFACTURING A PISTON RING FOR INTERNAL COMBUSTION ENGINES, AND A PISTON RING OF THIS TYPE
Title (en)
METHOD FOR MANUFACTURING A PISTON RING FOR INTERNAL COMBUSTION ENGINES, AND A PISTON RING OF THIS TYPE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES KOLBENRINGS FÜR VERBRENNUNGSMOTOREN SOWIE EINEN DERARTIGEN KOLBENRING
Title (fr)
PROCEDE POUR FABRIQUER UN SEGMENT DE PISTON POUR MOTEUR A COMBUSTION INTERNE ET SEGMENT DE PISTON DE CE TYPE
Publication
Application
Priority
- DE 2006001531 W 20060831
- DE 102005041408 A 20050901
Abstract (en)
[origin: WO2007025533A1] The present invention relates to a method for manufacturing a piston ring (10) for internal combustion engines, having the following method steps: - machining of a metal strip (20), with the result that it acquires at least one beveled face (15, 16) which represents at least one part of a ring flank of the piston ring (10) which is to be manufactured, - formation of a piston ring (10) from the metal strip (20) which has been machined in this way and the surface of which forms an inner and an outer circumferential face (11, 12) and an upper and a lower ring flank, - hardening of the surface of the piston ring (10). Furthermore, the present invention relates to a piston ring (10) for internal combustion engines, the surface of which forms an inner and an outer circumferential face (11, 12) and an upper and a lower rink flank, wherein the surface is provided with a uniformly thick hardened layer (21).
IPC 8 full level
F16J 9/26 (2006.01)
CPC (source: EP US)
C23C 8/02 (2013.01 - EP US); C23C 8/80 (2013.01 - EP US); F16J 9/26 (2013.01 - EP US); Y10T 29/49274 (2015.01 - EP US)
Citation (search report)
See references of WO 2007025533A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 102005041408 A1 20070308; BR PI0615327 A2 20110517; CN 101253353 A 20080827; EP 1920175 A1 20080514; JP 2009507160 A 20090219; RU 2008111969 A 20091010; US 2008256794 A1 20081023; WO 2007025533 A1 20070308
DOCDB simple family (application)
DE 102005041408 A 20050901; BR PI0615327 A 20060831; CN 200680032167 A 20060831; DE 2006001531 W 20060831; EP 06791337 A 20060831; JP 2008528337 A 20060831; RU 2008111969 A 20060831; US 99123906 A 20060831