EP 2198061 A4 20151014 - HEAT-TREATMENT PROCESS FOR A STEEL
Title (en)
HEAT-TREATMENT PROCESS FOR A STEEL
Title (de)
WÄRMEBEHANDLUNGSVERFAHREN FÜR EINEN STAHL
Title (fr)
PROCÉDÉ DE TRAITEMENT THERMIQUE POUR UN ACIER
Publication
Application
Priority
- SE 2008000544 W 20081003
- GB 0719457 A 20071004
Abstract (en)
[origin: WO2009045146A1] A process for inducing a compressive residual stress in a surface region of a steel component, the process comprising a heat treatment having the following steps: (i) providing a component comprising a steel composition; (ii) induction heating at least a part of the component followed by quenching said at least part, wherein the hardness in a surface region of the component is increased; and (iii) subsequently performing a martensite and/or bainite through hardening step to obtain a microstructure comprising martensite and/or bainite.
IPC 8 full level
C21D 1/10 (2006.01); C21D 1/78 (2006.01); C21D 9/36 (2006.01)
CPC (source: EP US)
C21D 1/10 (2013.01 - EP US); C21D 1/18 (2013.01 - EP US); F16C 33/62 (2013.01 - EP US); F16C 2202/04 (2013.01 - EP US); F16C 2204/66 (2013.01 - EP US); Y02P 10/25 (2015.11 - EP US)
Citation (search report)
- [X] CA 1088579 A2
- [XYI] US 6390924 B1 20020521 - YOSHIDA KAZUHIKO [JP], et al
- [XI] JP 2000213553 A 20000802 - NTN TOYO BEARING CO LTD
- [Y] EP 0425863 A1 19910508 - GKN AUTOMOTIVE AG [DE], et al
- [A] JP 2005048211 A 20050224 - JFE STEEL KK
- See references of WO 2009045146A1
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
DOCDB simple family (publication)
WO 2009045146 A1 20090409; CN 101868556 A 20101020; CN 101868556 B 20130116; EP 2198061 A1 20100623; EP 2198061 A4 20151014; GB 0719457 D0 20071114; JP 2011514929 A 20110512; JP 5535922 B2 20140702; US 2011073222 A1 20110331
DOCDB simple family (application)
SE 2008000544 W 20081003; CN 200880116960 A 20081003; EP 08835034 A 20081003; GB 0719457 A 20071004; JP 2010527905 A 20081003; US 68176208 A 20081003