EP 2366812 A4 20120425 - GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME
Title (en)
GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME
Title (de)
GALVANISIERTES STAHLBLECH UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE D ACIER GALVANISÉ ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2009058426 W 20090422
- JP 2008319131 A 20081216
Abstract (en)
[origin: WO2010070942A1] Provided is a method for manufacturing a galvanized steel sheet, wherein: a steel sheet is galvanized, the surface is exposed for 1 to 60 seconds to an aqueous solution with a pH of 4-6 and a temperature of 20-70°C containing zinc ion with a concentration in the range of 5-100g/l, and then the steel sheet is washed and dried. An example of an ideal zinc-containing solution would be, for instance, a solution that contains zinc sulfate. The aforementioned method enables an oxide layer, mainly composed of zinc with an average thickness of no less than 10nm, to be formed on the surface of the steel sheet, thereby enabling a galvanized steel sheet with excellent press-formability to be manufactured in a stable manner and over a short period of time.
IPC 8 full level
C23C 28/00 (2006.01); C23C 2/26 (2006.01); C23C 2/40 (2006.01); C23C 18/12 (2006.01); C23C 22/53 (2006.01)
CPC (source: EP KR US)
C23C 2/06 (2013.01 - EP); C23C 2/26 (2013.01 - EP KR US); C23C 2/40 (2013.01 - EP); C23C 18/1216 (2013.01 - EP); C23C 18/1241 (2013.01 - EP); C23C 22/53 (2013.01 - EP KR); C23C 28/00 (2013.01 - KR); C23C 28/3225 (2013.01 - EP); C23C 28/345 (2013.01 - EP)
Citation (search report)
- [E] EP 2186925 A1 20100519 - JFE STEEL CORP [JP]
- [XP] EP 2014783 A1 20090114 - JFE STEEL CORP [JP]
- [XA] EP 1288325 A1 20030305 - NIPPON KOKAN KK [JP]
- [XA] US 2005139291 A1 20050630 - TAIRA SHOICHIRO [JP], et al
- [X] EP 1666624 A1 20060607 - JFE STEEL CORP [JP]
- [A] FR 2864552 A1 20050701 - USINOR [FR]
- See references of WO 2010070942A1
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 MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2010070942 A1 20100624; CA 2742354 A1 20100624; CA 2742354 C 20140225; CN 102216493 A 20111012; EP 2366812 A1 20110921; EP 2366812 A4 20120425; EP 2366812 B1 20190814; KR 20110073573 A 20110629; TW 201024461 A 20100701; TW I516638 B 20160111
DOCDB simple family (application)
JP 2009058426 W 20090422; CA 2742354 A 20090422; CN 200980145492 A 20090422; EP 09833249 A 20090422; KR 20117010906 A 20090422; TW 98113978 A 20090428