EP 2857531 A2 20150408 - Flow forming method
Title (en)
Flow forming method
Title (de)
Abstreckdrückwalzverfahren
Title (fr)
Procédé de fluotournage
Publication
Application
Priority
GB 201316829 A 20130923
Abstract (en)
A method of forming a shaped article. The method comprises providing a pre-form 40 comprising a chromium molybdenum vanadium steel alloy, heat treating the pre-form to obtain a surface hardness of between 420 and 480 according to the Vickers hardness test, and, subsequent to the heat treating step, flow forming the pre-form 40 to shape the pre-form.
IPC 8 full level
C21D 9/08 (2006.01); B21D 22/14 (2006.01); C21D 1/25 (2006.01); C21D 6/00 (2006.01); C21D 8/10 (2006.01); C21D 9/28 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01)
CPC (source: EP US)
C21D 1/06 (2013.01 - US); C21D 1/18 (2013.01 - US); C21D 1/25 (2013.01 - EP US); C21D 1/30 (2013.01 - EP US); C21D 8/005 (2013.01 - US); C21D 9/08 (2013.01 - EP US); C21D 9/28 (2013.01 - EP US); C22C 38/002 (2013.01 - US); C22C 38/02 (2013.01 - US); C22C 38/04 (2013.01 - US); C22C 38/22 (2013.01 - US); C22C 38/24 (2013.01 - US); C22C 38/44 (2013.01 - US); C22C 38/46 (2013.01 - US); C22C 38/60 (2013.01 - US); B21D 22/14 (2013.01 - EP US); C21D 6/002 (2013.01 - EP US); C21D 8/10 (2013.01 - EP US)
Citation (third parties)
Third party : anonymous
DE 4323167 C1 19940519 - LEIFELD GMBH & CO [DE], et al
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)
EP 2857531 A2 20150408; EP 2857531 A3 20150422; EP 2857531 B1 20170301; GB 201316829 D0 20131106; US 2015083284 A1 20150326
DOCDB simple family (application)
EP 14183234 A 20140902; GB 201316829 A 20130923; US 201414475654 A 20140903