EP 1929053 B1 20110622 - METHOD FOR MAKING A STEEL PART OF MULTIPHASE MICROSTRUCTURE
Title (en)
METHOD FOR MAKING A STEEL PART OF MULTIPHASE MICROSTRUCTURE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES STAHLTEILS MIT MEHRPHASIGER MIKROSTRUKTUR
Title (fr)
PROCEDE DE FABRICATION D UNE PIECE EN ACIER DE MICROSTRUCTURE MULTI-PHASEE
Publication
Application
Priority
- FR 2006002135 W 20060918
- EP 05291958 A 20050921
- EP 06808157 A 20060918
Abstract (en)
[origin: EP1767659A1] Making a steel part having a multi-phased microstructure having ferrite comprises: cutting a steel blank in to a steel strip of a composition having e.g. carbon (C), manganese (Mn), silicon (Si), aluminum (Al), molybdenum (Mo), chromium (Cr), phosphorus (P), titanium (Ti), and vanadium (V) (all at specific weight percentage); optionally pre-deforming the blank in cold; heating the blank to a temperature greater than the steel temperature and keeping the part under this temperature; transferring the heated blank within a working tool to make the part hard; and cooling the part within the tools. Manufacturing a steel part having a multi-phased microstructure containing ferrite, which is homogeneously distributed in each area of the part, comprises: cutting a steel blank in to a steel strip of a composition containing carbon (C) at 0.01-0.50 wt.%, manganese (Mn) at 0.5-3 wt.%, silicon (Si) at 0.001-3 wt.%, aluminum (Al) at 0.005-3 wt.%, molybdenum (Mo) =1 wt.%, chromium (Cr) at =1.5 wt.%, phosphorus (P) at =0.1 wt.%, titanium (Ti) at =0.2 wt.%, vanadium (V) at =1 wt.%, optionally elements like nickel at =2 wt.%, copper at =2 and sulfur (S) at =0.05 wt.% and rest iron and other impurities; optionally pre-deforming the blank in cold; heating the blank to a temperature greater than the steel temperature and maintaining the part under this temperature such that the part after heating comprises austenite of >=25%; transferring the heated blank within a working tool to make the part hard; and cooling the part within the tools to give the multi-phased microstructure Independent claims are included for: (1) a steel part obtained by the process; and (2) an automobile engine comprising the steel part.
IPC 8 full level
C21D 1/18 (2006.01); C21D 1/673 (2006.01); C21D 7/13 (2006.01); C23C 2/26 (2006.01)
CPC (source: EP KR US)
C21D 1/185 (2013.01 - EP KR US); C21D 1/673 (2013.01 - EP KR US); C21D 7/13 (2013.01 - EP KR US); C21D 9/48 (2013.01 - KR); C22C 38/02 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/22 (2013.01 - EP KR US); C22C 38/28 (2013.01 - EP KR US); C22C 38/38 (2013.01 - EP KR US); C23C 2/06 (2013.01 - KR); C23C 2/12 (2013.01 - KR); C23C 2/26 (2013.01 - EP US); C23C 2/261 (2022.08 - KR); C21D 9/46 (2013.01 - EP US); C21D 9/48 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP KR US); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1767659 A1 20070328; AT E513932 T1 20110715; BR PI0616261 A2 20110614; BR PI0616261 B1 20140204; CA 2623146 A1 20070329; CA 2623146 C 20110322; CN 101292049 A 20081022; CN 101292049 B 20111214; EP 1929053 A1 20080611; EP 1929053 B1 20110622; EP 2287344 A1 20110223; ES 2366133 T3 20111017; JP 2009508692 A 20090305; JP 5386170 B2 20140115; KR 101453697 B1 20141022; KR 20080053312 A 20080612; KR 20110121657 A 20111107; KR 20120099526 A 20120910; KR 20130017102 A 20130219; MA 29790 B1 20080901; PL 1929053 T3 20111031; RU 2008115444 A 20091027; RU 2403291 C2 20101110; UA 96739 C2 20111212; US 10294557 B2 20190521; US 2008308194 A1 20081218; US 2012211128 A1 20120823; US 8114227 B2 20120214; WO 2007034063 A1 20070329; ZA 200802385 B 20090128
DOCDB simple family (application)
EP 05291958 A 20050921; AT 06808157 T 20060918; BR PI0616261 A 20060918; CA 2623146 A 20060918; CN 200680039355 A 20060918; EP 06808157 A 20060918; EP 10010435 A 20060918; ES 06808157 T 20060918; FR 2006002135 W 20060918; JP 2008531732 A 20060918; KR 20087007005 A 20080321; KR 20117023104 A 20060918; KR 20127020882 A 20060918; KR 20137001899 A 20060918; MA 30763 A 20080319; PL 06808157 T 20060918; RU 2008115444 A 20060918; UA A200805058 A 20060918; US 201213343896 A 20120105; US 6753306 A 20060918; ZA 200802385 A 20080313