EP 1019564 A1 20000719 - METHOD FOR PHOSPHATIZING A STEEL STRIP
Title (en)
METHOD FOR PHOSPHATIZING A STEEL STRIP
Title (de)
VERFAHREN ZUR PHOSPHATIERUNG VON STAHLBAND
Title (fr)
PROCEDE DE PHOSPHATATION D'UN FEUILLARD D'ACIER
Publication
Application
Priority
- DE 19740953 A 19970917
- EP 9805634 W 19980905
Abstract (en)
[origin: DE19740953A1] High speed spray or dip phosphating of optionally galvanized steel strip is carried out using a nitrate-free acid phosphating solution which contains 1-4 g/l zinc ions, 1.2-4 g/l manganese ions, 1-4 g/l magnesium ions, 10-30 g/l phosphate ions and 0.1-3 g/l free or combined hydroxylamine and which has free and total acid contents of 0.4-4 points and 15-45 points respectively.
IPC 1-7
IPC 8 full level
C23C 22/18 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP)
C23C 22/182 (2013.01); C23C 22/188 (2013.01); C23C 22/368 (2013.01)
Citation (search report)
See references of WO 9914397A1
Designated contracting state (EPC)
AT BE DE FR GB NL
DOCDB simple family (publication)
DE 19740953 A1 19990318; CA 2303877 A1 19990325; EP 1019564 A1 20000719; WO 9914397 A1 19990325
DOCDB simple family (application)
DE 19740953 A 19970917; CA 2303877 A 19980905; EP 9805634 W 19980905; EP 98949988 A 19980905