Method of producing a both-side electrogalvanized steel strip in

Details Method of producing a both-side electrogalvanized steel strip in Method of producing a both-side electrogalvanized steel strip in

1987-09-30

1989-02-14

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 29, 204 351, 204 40, C25D 706

Patent

active

048044440

ABSTRACT:
A method of producing both-side electrolytically zinc plated steel strips utilizing a chloride bath including the steps of plating one side of the steel strip in a first plating cell, wetting the thus one-side plated steel strip in a wetting tank, and then plating the other nonplated side of the steel strip in a second plating cell. The method provides for limiting the concentration of zinc in the wetting solution to a range of 0.1-50 g/l so as to improve the zinc coating coverage, glossiness and corrosion resistance.

REFERENCES:
patent: 2933438 (1960-04-01), Lancy
patent: 3483113 (1969-12-01), Carter
patent: 3591467 (1977-07-01), Carter
patent: 3989604 (1976-11-01), Austin
patent: 4120997 (1978-10-01), Franks
A Kenneth Graham, Electroplating Engineering Handbook, Reinhold Publishing Corp., New York, 2nd edition, 1962, pp. 705-709.
Metal Finishing Guidebook and Directory for 1978, Metals and Plastics Publications, Inc. Hackensack, N.J., p. 340.

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