EP 0931179 B1 20001206 - METHOD FOR PHOSPHATING A STEEL BAND
Title (en)
METHOD FOR PHOSPHATING A STEEL BAND
Title (de)
VERFAHREN ZUR PHOSPHATIERUNG VON STAHLBAND
Title (fr)
PROCEDE POUR LA PHOSPHATATION D'UN FEUILLARD D'ACIER
Publication
Application
Priority
- DE 19639596 A 19960926
- EP 9705091 W 19970917
Abstract (en)
[origin: WO9813534A2] The invention concerns a method for phosphating a steel band or a steel band galvanized or alloy-coated on one side or both sides by spraying or dipping for a period ranging from 2 to 15 seconds using an acid, zinc and manganese-containing phosphating solution at a temperature ranging from 40 to 70 DEG C. Said method is characterized by a phosphating solution containing 1 to 4 g/l zinc ions, 0.8 to 3.5 g/l manganese ions, 10 to 30 g/l phosphate ions, 0.1 to 3 g/l free, ionic or bound hydroxylamine, and no more than 1 g/l nitrate ions, a free acid content ranging from 0.4 to 4 points and a total acid content ranging from 12 to 50 points. The phosphating solution contains optionally 0.8 to 3.5 g/l nickel or 0.002 to 0.2 g/l copper.
IPC 1-7
IPC 8 full level
C23C 22/00 (2006.01); C23C 22/12 (2006.01); C23C 22/18 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP KR)
C23C 22/18 (2013.01 - KR); C23C 22/182 (2013.01 - EP); C23C 22/184 (2013.01 - EP); C23C 22/365 (2013.01 - EP)
Designated contracting state (EPC)
AT BE DE ES FR GB IT SE
DOCDB simple family (publication)
WO 9813534 A2 19980402; WO 9813534 A3 19980827; AT E197969 T1 20001215; AU 4459397 A 19980417; CA 2266625 A1 19980402; CN 1231706 A 19991013; DE 19639596 A1 19980402; DE 59702741 D1 20010111; EP 0931179 A2 19990728; EP 0931179 B1 20001206; ES 2153217 T3 20010216; ID 21474 A 19990617; JP 2001508123 A 20010619; KR 20000048509 A 20000725
DOCDB simple family (application)
EP 9705091 W 19970917; AT 97942941 T 19970917; AU 4459397 A 19970917; CA 2266625 A 19970917; CN 97198236 A 19970917; DE 19639596 A 19960926; DE 59702741 T 19970917; EP 97942941 A 19970917; ES 97942941 T 19970917; ID 990112 A 19970917; JP 51522798 A 19970917; KR 19997002409 A 19990320