EP 3282032 A4 20180912 - STEEL SHEET WITH EXCELLENT COLD WORKABILITY DURING FORMING, AND PROCESS FOR PRODUCING SAME
Title (en)
STEEL SHEET WITH EXCELLENT COLD WORKABILITY DURING FORMING, AND PROCESS FOR PRODUCING SAME
Title (de)
STAHLBLECH MIT AUSGEZEICHNETER KALTVERFORMBARKEIT BEIM UMFORMEN UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
TÔLE D'ACIER AYANT UNE EXCELLENTE APTITUDE AU FAÇONNAGE À FROID LORS DU FORMAGE ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2015081101 A 20150410
- JP 2016061608 W 20160408
Abstract (en)
[origin: EP3282032A1] The present invention provides a steel sheet having an excellent cold workability during forming and a method for producing the same. The steel sheet of the present invention is characterized in that: (a) the ratio of the number of carbides at the ferrite grain boundary to the number of carbides in the ferrite grain exceeds 1, (b) the ferrite grain diameter is 5 µm or more and 50 µm or less, (c) the in-plane anisotropy |”r| of the r value is 0.2 or less, (d) the Vickers hardness is 100 HV or more and 150 HV or less, (e) the random intensity ratio of the {311} <011> orientation at the 1/2-thickness portion of the steel sheet is 3.0 or less.
IPC 8 full level
C22C 38/06 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP KR US); C21D 9/46 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP); C22C 38/002 (2013.01 - EP); C22C 38/005 (2013.01 - EP); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP KR US); C22C 38/08 (2013.01 - EP); C22C 38/10 (2013.01 - EP); C22C 38/12 (2013.01 - EP); C22C 38/14 (2013.01 - EP); C22C 38/16 (2013.01 - EP); C22C 38/18 (2013.01 - EP); C22C 38/60 (2013.01 - EP KR); C21D 2211/005 (2013.01 - EP KR US)
Citation (search report)
- [A] EP 1980635 A1 20081015 - JFE STEEL CORP [JP]
- [A] EP 2003220 A1 20081217 - JFE STEEL CORP [JP]
- [A] JP 2009263718 A 20091112 - NIPPON STEEL CORP
- See references of WO 2016163538A1
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
DOCDB simple family (publication)
EP 3282032 A1 20180214; EP 3282032 A4 20180912; BR 112017021482 A2 20180703; CN 107250415 A 20171013; CN 107250415 B 20191001; JP 6070912 B1 20170201; JP WO2016163538 A1 20170427; KR 101951134 B1 20190221; KR 20170088414 A 20170801; MX 2017012858 A 20180115; TW 201700748 A 20170101; TW I565811 B 20170111; US 2018105891 A1 20180419; WO 2016163538 A1 20161013
DOCDB simple family (application)
EP 16776704 A 20160408; BR 112017021482 A 20160408; CN 201680011614 A 20160408; JP 2016061608 W 20160408; JP 2016554690 A 20160408; KR 20177017514 A 20160408; MX 2017012858 A 20160408; TW 105111211 A 20160411; US 201615565096 A 20160408