EP 0111246 A3 19860108 - PROCESS FOR PHOSPHATIZING ZINC-ELECTROPLATED METAL OBJECTS
Title (en)
PROCESS FOR PHOSPHATIZING ZINC-ELECTROPLATED METAL OBJECTS
Publication
Application
Priority
DE 3245411 A 19821208
Abstract (en)
[origin: ES8406564A1] A process for phosphating zinc-plated metal articles, particularly electrolytically zinc-plated steel sheets, by treatment thereof for a short period with an acidic phosphating solution which, in addition to zinc and phosphate ions, can contain other metal cations and/or anions of oxygen-containing acids having an accelerating effect, wherein the phosphating solution has a content of Zn2+-cations of between about 1 and 2.5 g/l, a free acid content in the range from 0.8 to 3 points, and the acid ratio of total acid to free acid in the range from 5 to 10. The phosphating treatment is carried out for a period of time not in excess of about 5 seconds.
IPC 1-7
IPC 8 full level
C23C 22/12 (2006.01); C23C 22/13 (2006.01)
CPC (source: EP KR US)
C23C 22/12 (2013.01 - EP KR US); C23C 22/13 (2013.01 - EP US)
Citation (search report)
- [Y] DE 1049659 B
- [Y] FR 1366777 A 19640717 - PARKER STE CONTINENTALE
- [A] FR 2033717 A5 19701204 - PARKER STE CONTINENTALE
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0111246 A2 19840620; EP 0111246 A3 19860108; EP 0111246 B1 19881117; AT E38692 T1 19881215; AU 2217283 A 19840614; AU 561151 B2 19870430; CA 1205727 A 19860610; DE 3245411 A1 19840705; DE 3245411 C2 19880331; DE 3378481 D1 19881222; ES 527886 A0 19840801; ES 8406564 A1 19840801; JP S59116383 A 19840705; KR 840007037 A 19841204; KR 910002568 B1 19910426; US 4497668 A 19850205; ZA 839106 B 19840725
DOCDB simple family (application)
EP 83112008 A 19831130; AT 83112008 T 19831130; AU 2217283 A 19831207; CA 442768 A 19831207; DE 3245411 A 19821208; DE 3378481 T 19831130; ES 527886 A 19831207; JP 23261883 A 19831208; KR 830005789 A 19831207; US 55487983 A 19831125; ZA 839106 A 19831207