EP 1988189 A1 20081105 - PROCESS FOR PRODUCING HOT-DIP GALVANIZED STEEL SHEET WITH ZINC PHOSPHATE COAT
Title (en)
PROCESS FOR PRODUCING HOT-DIP GALVANIZED STEEL SHEET WITH ZINC PHOSPHATE COAT
Title (de)
VERFAHREN ZUR HERSTELLUNG FEUERVERZINKTER STAHLBLECHE MIT ZINKPHOSPHATÜBERZUG
Title (fr)
PROCEDE DE PRODUCTION D'UNE FEUILLE D'ACIER GALVANISE PAR IMMERSION A CHAUD AYANT UN REVETEMENT EN PHOSPHATE DE ZINC
Publication
Application
Priority
- JP 2007050650 W 20070118
- JP 2006043099 A 20060220
- JP 2006043105 A 20060220
Abstract (en)
The present invention provides a method for manufacturing hot-dip galvanized steel sheet having zinc phosphate coating which is possible to keep the composition balance of the treatment agent constant, to reduce the manufacturing cost, and to minimize the burden to the environment. It also provides a galvanized steel sheet having phosphate coating which exhibits excellent lubricity and adhesiveness by the above method. The invention is a method for continuously manufacturing hot-dip galvanized steel sheet having zinc phosphate coating comprising the steps of: a surface conditioning agent supply process for supplying a surface conditioning agent to a surface of hot-dip galvanized steel sheet; a pre-drying process for drying the surface conditioning agent in a post-process of the surface conditioning agent supply process; and a treatment agent supply process for supplying treatment agent containing zinc phosphate solution to the surface of the hot-dip galvanized steel sheet in a post-process of the pre-drying process.
IPC 8 full level
C23C 22/12 (2006.01); C23C 2/26 (2006.01); C23C 22/13 (2006.01); C23C 22/36 (2006.01); C23C 22/73 (2006.01); C23C 22/78 (2006.01); C23C 22/80 (2006.01)
CPC (source: EP KR US)
C23C 2/26 (2013.01 - EP KR US); C23C 22/12 (2013.01 - EP KR); C23C 22/13 (2013.01 - EP KR); C23C 22/362 (2013.01 - EP KR); C23C 22/73 (2013.01 - EP KR); C23C 22/78 (2013.01 - EP); C23C 22/80 (2013.01 - EP KR)
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 1988189 A1 20081105; EP 1988189 A4 20120125; EP 1988189 B1 20140312; KR 101068708 B1 20110928; KR 20080094039 A 20081022; TW 200732510 A 20070901; TW I348500 B 20110911; WO 2007097139 A1 20070830
DOCDB simple family (application)
EP 07713636 A 20070118; JP 2007050650 W 20070118; KR 20087019659 A 20070118; TW 96102898 A 20070125