C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/25.5, 204/22
C25D 5/14 (2006.01) C25D 5/12 (2006.01) C25D 11/38 (2006.01)
Patent
CA 1193221
HYDRATED CHROMIUM OXIDE-COATED STEEL STRIP USEFUL FOR WELDED CANS AND OTHER CONTAINERS \ ABSTRACT OF THE DISCLOSURE A hydrated chromium oxide-coated steel strip which has a satisfactory weldability and resistance to corrosion under a lacquer coating and which is useful for producing welded cans and other containers, comprises a steel strip substrate, plated nickel base layers formed on the surfaces of the steel strip substrate and having a weight of 150 - 2500 mg per m2 of each surface of the substrate, hydrated chromium oxide-containing coating layers formed on the surfaces of the plated nickel base layers and having a weight of 2 - 20 mg, in terms of metallic chromium, per m2 of each surface of the substrate, and, optionally, plated tin intermediate layers formed between the plated nickel base layers and the chromate-containing coating layers and having a weight of 100 - 2000 mg per m2 of each surface of the substrate, the hydrated chromium oxide-containing coating layer optionally being composed of a metallic chromium underlayer in a weight of 10 mg or less per m2 of each surface of the steel strip substrate and a hydrated chromium oxide upper layer, the sum of the weights of the underlayer and the upper layer being 2-20 mg, in terms of metallic chromium, per m2 of each surface of the steel strip substrate.
378830
Higuchi Seizun
Kamada Minoru
Nomura Yukio
Ooga Tomonari
Tsukamoto Yukio
Goudreau Gage Dubuc
Nippon Steel Corporation
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