EP 1384794 B1 20060524 - Spheroidal cast iron particulary for piston rings and method for its production
Title (en)
Spheroidal cast iron particulary for piston rings and method for its production
Title (de)
Kugelgraphitgusseisen für Kolbenringe und Verfahren zu seiner Herstellung
Title (fr)
Fonte nodulaire pour segments de piston et procédé pour la fabrication de ladite fonte
Publication
Application
Priority
IT MI20021670 A 20020726
Abstract (en)
[origin: EP1384794A1] A spheroidal cast iron, particularly for piston rings for pistons of engines, with a particular alloyed chemical composition and subjected to a heat treatment known as austempering, which comprises an austenitization treatment followed by an isothermal hardening treatment, has mechanical characteristics that are comparable with those of the steel currently used to produce piston rings, while maintening the best tribological and self-lubrification characteristics of spheroidal cast irons, and a process suitable to obtain said spheroidal cast iron.
IPC 8 full level
C22C 37/04 (2006.01); C21D 5/00 (2006.01); C22C 33/08 (2006.01); C22C 37/10 (2006.01); C21D 1/20 (2006.01)
CPC (source: EP US)
C21D 5/00 (2013.01 - EP US); C22C 33/08 (2013.01 - EP US); C22C 37/04 (2013.01 - EP US); C22C 37/10 (2013.01 - EP US); C21D 1/20 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/006 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1384794 A1 20040128; EP 1384794 B1 20060524; AT E327351 T1 20060615; DE 60305389 D1 20060629; DE 60305389 T2 20070503; ES 2264507 T3 20070101; IT MI20021670 A1 20040126; PT 1384794 E 20061031; US 2004071584 A1 20040415
DOCDB simple family (application)
EP 03016555 A 20030724; AT 03016555 T 20030724; DE 60305389 T 20030724; ES 03016555 T 20030724; IT MI20021670 A 20020726; PT 03016555 T 20030724; US 62587203 A 20030724