EP 2986750 A1 20160224 - THERMOCHEMICAL TREATMENT METHOD COMPRISING A SINGLE NITRIDING PHASE BEFORE CARBURISING
Title (en)
THERMOCHEMICAL TREATMENT METHOD COMPRISING A SINGLE NITRIDING PHASE BEFORE CARBURISING
Title (de)
THERMOCHEMISCHES BEHANDLUNGSVERFAHREN MIT EINER EINZIGEN NITRIERUNGSPHASE VOR DER AUFKOHLUNG
Title (fr)
PROCEDE DE TRAITEMENT THERMOCHIMIQUE COMPORTANT UNE UNIQUE PHASE DE NITRURATION AVANT UNE CEMENTATION
Publication
Application
Priority
- FR 1353536 A 20130418
- FR 2014050581 W 20140313
Abstract (en)
[origin: WO2014170566A1] A method for thermochemically treating steel parts to improve the mechanical properties of same, comprising the diffusion of carbon by carburising and of nitrogen by nitriding in a low pressure furnace following a temperature cycle, characterised in that it first comprises an increase to a first relatively low temperature (T1) at which it is possible to start nitriding the metal, then a single nitriding phase (N) at a temperature between said first temperature (T1) and a second carburising temperature (T2), then a single carburising phase (C), followed by diffusion (D) at said second temperature (T2) which remains constant, and finally the phase of quenching (T) the metal.
IPC 8 full level
C23C 8/02 (2006.01); C23C 8/34 (2006.01); C23C 8/80 (2006.01)
CPC (source: EP)
C23C 8/02 (2013.01); C23C 8/34 (2013.01); C23C 8/80 (2013.01)
Citation (search report)
See references of WO 2014170566A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014170566 A1 20141023; CN 105264106 A 20160120; EP 2986750 A1 20160224; FR 3004731 A1 20141024; FR 3004731 B1 20160513
DOCDB simple family (application)
FR 2014050581 W 20140313; CN 201480022094 A 20140313; EP 14720174 A 20140313; FR 1353536 A 20130418