EP 2612957 A1 20130710 - METHOD FOR PRODUCING COLD-ROLLED STEEL SHEET, COLD-ROLLED STEEL SHEET, AND VEHICLE MEMBER
Title (en)
METHOD FOR PRODUCING COLD-ROLLED STEEL SHEET, COLD-ROLLED STEEL SHEET, AND VEHICLE MEMBER
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES KALTGEWALZTEN STAHLBLECHS, KALTGEWALZTES STAHLBLECH UND FAHRZEUGTEIL
Title (fr)
PROCÉDÉ DE PRODUCTION D'UNE TÔLE D'ACIER LAMINÉE À FROID, TÔLE D'ACIER LAMINÉE À FROID, ET ÉLÉMENT DE VÉHICULE
Publication
Application
Priority
- JP 2011177861 A 20110816
- JP 2010266125 A 20101130
- JP 2010193182 A 20100831
- JP 2011069193 W 20110825
Abstract (en)
This invention provides a method of producing a cold-rolled steel sheet being excellent in not only the phosphate treatability but also the corrosion resistance after coating under severe corrosion environment such as hot salt water immersion test or composite cycle corrosion test, wherein a continuously annealed steel sheet after cold rolling preferably comprising 0.5-3.0 mass% of Si is pickled to remove a Si-containing oxide layer on a surface layer of the steel sheet and further repickled so that a surface covering ratio of an iron-based oxide on the surface of the steel sheet is not more than 40% and preferably a maximum thickness of the iron-based oxide is not more than 150 nm, as well as a cold-rolled steel sheet produced by this method and a member for automobile using the cold-rolled steel sheet.
IPC 8 full level
C23G 1/08 (2006.01); B21B 3/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
B21B 3/02 (2013.01 - KR); B21B 45/0269 (2013.01 - US); C21D 8/0236 (2013.01 - EP US); C21D 8/0278 (2013.01 - EP US); C21D 9/46 (2013.01 - KR); C22C 38/00 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/08 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); C22C 38/16 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/32 (2013.01 - EP US); C22C 38/34 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C23G 1/00 (2013.01 - EP US); C23G 1/08 (2013.01 - EP KR US); C23G 1/081 (2013.01 - EP US); C23G 1/085 (2013.01 - EP US); C23G 1/086 (2013.01 - EP US); C23G 1/088 (2013.01 - EP US); B21B 3/02 (2013.01 - EP US); Y10T 428/26 (2015.01 - EP US)
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 2612957 A1 20130710; EP 2612957 A4 20150408; EP 2612957 B1 20210414; BR 112013004853 A2 20160607; CN 102959130 A 20130306; CN 102959130 B 20160601; JP 2012132092 A 20120712; JP 5729211 B2 20150603; KR 101502213 B1 20150312; KR 20130031285 A 20130328; MX 2013000619 A 20130528; MX 348689 B 20170626; TW 201224216 A 20120616; TW I527934 B 20160401; US 2013149526 A1 20130613; WO 2012029632 A1 20120308
DOCDB simple family (application)
EP 11821649 A 20110825; BR 112013004853 A 20110825; CN 201180029582 A 20110825; JP 2011069193 W 20110825; JP 2011177861 A 20110816; KR 20127033102 A 20110825; MX 2013000619 A 20110825; TW 100131125 A 20110830; US 201113812774 A 20110825