C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/25.5
C25D 5/18 (2006.01) C25D 11/38 (2006.01)
Patent
CA 1238293
ABSTRACT OF THE DISCLOSURE Tin-free steel sheets are produced by chromium plating a thin steel sheet through cathodic electrolysis in a chromium-containing bath to deposit a metallic chromium layer, reversely electrolyzing the chromium plated steel steet by a successive anodizing treatment in the same or another chromium-containing bath, and subjecting the reversely electrolyzed steel sheet to an electrolytic chromate treatment in an aqueous chromate solution. The adhesion of lacquer to the TFS sheet is improved by carrying out the electrolytic chromate treatment in a chromate solution which contains chromic acid, chromates or dichromates as a main ingredient and sulfuric acid, sulfates, thiocyanates, sulfonic acids or sulfonates as an assistant ingredient, in a molar ratio of H2SO4/CrO3 between 1/1000 and 1/100 provided that the main and assistant ingredients are converted into CrO3 and H2SO4, respectively.
458730
Ichida Toshio
Irie Toshio
Ogata Hajime
Tsugawa Shunichi
Yamaji Kyoko
Kawasaki Steel Corporation
Moffat & Co.
LandOfFree
Method for producing tin-free steel strips having improved... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for producing tin-free steel strips having improved..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing tin-free steel strips having improved... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1192101