EP 2203575 A2 20100707 - METHOD FOR CARBURISING WORKPIECES AND ASSOCIATED USE
Title (en)
METHOD FOR CARBURISING WORKPIECES AND ASSOCIATED USE
Title (de)
VERFAHREN ZUR AUFKOHLUNG VON WERKSTÜCKEN SOWIE VERWENDUNG
Title (fr)
PROCÉDÉ DE CARBURATION DE PIÈCES, ET SON UTILISATION
Publication
Application
Priority
- EP 2008062215 W 20080915
- DE 102007047074 A 20071001
Abstract (en)
[origin: WO2009047084A2] The invention relates to a method for carburising steel workpieces, especially workpieces having outer and inner surfaces, whereby said workpiece is maintained at a temperature of between 850 and 1050°C in an atmosphere containing gaseous hydrocarbon. At least two different gaseous hydrocarbons are used and/or the workpiece is held alternately, during a carburising pulse (13), in the atmosphere containing the gaseous hydrocarbon, and during a diffusion phase (15, 17), in an atmosphere which is free of hydrocarbon. The invention also relates to a use of said method.
IPC 8 full level
C23C 8/22 (2006.01); C23C 8/20 (2006.01); F02M 61/16 (2006.01)
CPC (source: EP US)
C23C 8/20 (2013.01 - EP US); C23C 8/22 (2013.01 - EP US); F02M 61/166 (2013.01 - EP US); F02M 2200/9038 (2013.01 - EP US)
Citation (search report)
See references of WO 2009047084A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DE 102007047074 A1 20090402; BR PI0818290 A2 20150414; CN 101809184 A 20100818; CN 101809184 B 20121212; EP 2203575 A2 20100707; EP 2203575 B1 20141112; JP 2010540777 A 20101224; US 2011277887 A1 20111117; US 8828150 B2 20140909; WO 2009047084 A2 20090416; WO 2009047084 A3 20100429
DOCDB simple family (application)
DE 102007047074 A 20071001; BR PI0818290 A 20080915; CN 200880109665 A 20080915; EP 08804176 A 20080915; EP 2008062215 W 20080915; JP 2010527389 A 20080915; US 73386608 A 20080915