EP 2826569 B1 20170621 - Method for passivating strip black iron plate
Title (en)
Method for passivating strip black iron plate
Title (de)
Verfahren zur Passivierung von bandförmigem Schwarzblech
Title (fr)
Procédé de passivation de tôle noire en forme de bande
Publication
Application
Priority
DE 102013107506 A 20130716
Abstract (en)
[origin: CA2855673A1] The invention concerns a process for passivation of strip steel plate, having the following steps: - electrochemical treatment of the black plate by passing the black plate through an electrolyte to form an inert steel surface, - rinsing the black plate, - application of an aqueous chromium-free treatment solution to at least one surface of the black plate to form a conversion layer that protects against corrosion and an adhesion layer for paints and organic coating materials. The black plate treated in accordance with the invention is characterized by high corrosion resistance and has good bonding capacity for paints and organic coatings and therefore is very suitable as a substitute for tin-free steel (TFS or ECCS) and tinplate for the production of packagings, in particular cans. In contrast to the traditional manufacturing and passivation processes for tin-free steel and tinplate, no chromium VI, which is environmentally hazardous and hazardous to health, is used in the process in accordance with the invention.
IPC 8 full level
C23C 22/78 (2006.01); C23C 22/05 (2006.01); C23C 22/18 (2006.01); C23C 22/34 (2006.01); C23C 22/73 (2006.01); C23C 22/74 (2006.01); C23C 22/76 (2006.01); C23C 22/83 (2006.01); C23G 1/00 (2006.01); C25D 11/34 (2006.01)
CPC (source: EP RU US)
C23C 22/05 (2013.01 - EP RU US); C23C 22/182 (2013.01 - EP RU US); C23C 22/34 (2013.01 - EP RU US); C23C 22/73 (2013.01 - EP RU US); C23C 22/74 (2013.01 - EP RU US); C23C 22/76 (2013.01 - EP RU US); C23C 22/78 (2013.01 - EP RU US); C23C 22/80 (2013.01 - RU US); C23C 22/82 (2013.01 - RU US); C23C 22/83 (2013.01 - EP RU US); C23G 1/00 (2013.01 - EP RU US); C25D 11/34 (2013.01 - EP RU US); Y10T 428/31678 (2015.04 - EP US)
Citation (examination)
- DE 102005045033 B3 20070118 - RASSELSTEIN GMBH [DE]
- DE 4416416 A1 19951116 - RASSELSTEIN AG [DE]
- "Metals Handbook", 1 January 1985, AMERICAN SOCIETY FOR METALS, Ohio, ISBN: 978-0-87170-188-6, article "Metals Handbook", pages: IN13, XP055219111
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2826569 A1 20150121; EP 2826569 B1 20170621; BR 102014017368 A2 20151006; BR 102014017368 B1 20210629; CA 2855673 A1 20150116; CA 2855673 C 20160927; CN 104294348 A 20150121; CN 104294348 B 20171212; DE 102013107506 A1 20150122; ES 2634870 T3 20170929; JP 2015028210 A 20150212; RS 56351 B1 20171229; RU 2014128191 A 20160127; RU 2663232 C2 20180802; US 2015024222 A1 20150122
DOCDB simple family (application)
EP 14175621 A 20140703; BR 102014017368 A 20140715; CA 2855673 A 20140703; CN 201410337358 A 20140715; DE 102013107506 A 20130716; ES 14175621 T 20140703; JP 2014131073 A 20140626; RS P20170926 A 20140703; RU 2014128191 A 20140710; US 201414332490 A 20140716