Process for producing one-side electrogalvanized steel sheet wit

Details Process for producing one-side electrogalvanized steel sheet wit Process for producing one-side electrogalvanized steel sheet wit

1990-04-06

1991-03-19

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204 34, 204145R, C25D 706

Patent

active

050008285

ABSTRACT:
A one-side electrogalvanized steel sheet with a distinguished susceptibility to a phosphate salt treatment and a distinguished appearance on the non-electrogalvanized side is produced by subjecting the non-electrogalvanized side of a steel sheet after one-side electrogalvanization in a galvanizing bath to an electrolytic peeling treatment using the non-electrogalvanized side of the one-side electrogalvanized steel sheet as an anode in an electrolytic peeling treatment bath containing 5 to 30% by weight of sodium sulfate as an electroconductive agent and at least 0.1% by weight of boric acid as a pH-controlling agent at a pH adjusted to a range of 5.0 to less than 9.0 as a posttreatment of the non-electrogalvanized side.

REFERENCES:
patent: 4522892 (1985-06-01), Shindou

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