EP 0260374 A3 19890906 - PROCESS FOR PRODUCING A MULTILAYER-COATED STRIP HAVING EXCELLENT CORROSION RESISTANCE AND WELDABILITY AND USEFUL FOR CONTAINERS
Title (en)
PROCESS FOR PRODUCING A MULTILAYER-COATED STRIP HAVING EXCELLENT CORROSION RESISTANCE AND WELDABILITY AND USEFUL FOR CONTAINERS
Publication
Application
Priority
JP 22052186 A 19860918
Abstract (en)
[origin: EP0260374A2] A multilayer-coated steel strip having an excellent corrosion resistance and weldability and useful for cans and containers is produced by a process in which a steel strip substrate is plated with nickel a nickel-based alloy to form nickel based coating layers each having an average amount of 2 to 10 mg/m<2>, provided with a number of convex and concave portions thereof, portions of which layers having a coating thickness of 0.001 mu m or more have a total area corresponding to 10 to 90% of the entire area of the surfaces of the substrate; the nickel based plated substrate is coated with tin to form tin coating layers on the nickel-based coating layers, each of which tin coating layers has an average amount of 200 to 2000 mg/m<2>; the resultant precursory coated steel strip is heated at a temperature equal to or higher than the melting point of tin to convert the nickel-based coating layers and the tin coating layers to base coating layers consisting essentially of an Fe-Ni-Sn-based alloy and having a number of convex and concave portions thereof, and intermediate coating layers formed on the base coating layers, consisting essentially of tin and having a number of convex and concave protions thereof; and then an electrolytic chromate treatment is applied onto the intermediate tin coating layers to form surface coating layers consisting of electrolysed chromate.
IPC 1-7
IPC 8 full level
C25D 5/26 (2006.01); C25D 5/10 (2006.01); C25D 5/12 (2006.01); C25D 5/16 (2006.01); C25D 5/50 (2006.01); C25D 11/38 (2006.01)
CPC (source: EP US)
C25D 5/12 (2013.01 - EP US); C25D 5/50 (2013.01 - EP); C25D 5/605 (2020.08 - EP US); C25D 11/38 (2013.01 - EP US)
Citation (search report)
- [Y] EP 0063933 A1 19821103 - NIPPON STEEL CORP [JP]
- [Y] FR 2478680 A1 19810925 - TOYO KOHAN CO LTD [JP]
- [A] FR 2483470 A1 19811204 - NIPPON STEEL CORP [JP]
- [A] EP 0164092 A1 19851211 - KAWASAKI STEEL CO [JP]
- [A] EP 0055481 A2 19820707 - NIPPON STEEL CORP [JP]
- [A] US 4601957 A 19860722 - FUJIMOTO TERUNORI [JP], et al
Designated contracting state (EPC)
BE DE FR GB IT LU NL
DOCDB simple family (publication)
EP 0260374 A2 19880323; EP 0260374 A3 19890906; EP 0260374 B1 19931118; AU 573122 B2 19880526; AU 7071287 A 19880324; CA 1331962 C 19940913; DE 3788178 D1 19931223; DE 3788178 T2 19940310; JP H0214438 B2 19900409; JP S6376896 A 19880407
DOCDB simple family (application)
EP 87104231 A 19870323; AU 7071287 A 19870327; CA 532926 A 19870325; DE 3788178 T 19870323; JP 22052186 A 19860918