Process for manufacturing electro-galvanized steel sheet excelle

Details Process for manufacturing electro-galvanized steel sheet excelle Process for manufacturing electro-galvanized steel sheet excelle

1980-06-05

1981-09-22

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204 43Z, C25D 706, C25D 356

Patent

active

042908604

ABSTRACT:
In an acidic zinc sulfate and iron sulfate electro-galvanizing bath, of which a pH value has been adjusted to under 1.5, containing iron from 20 to 90 wt. % relative to the total amount of metals capable of being electro-deposited in said acidic electro-galvanizing bath, a steel sheet is subjected to an electro-galvanizing treatment, with an electric current having a current density of from 10 to 40 A/dm.sup.2 to form on said steel sheet an electro-galvanized layer in a weight of from 1 to 50 g/m.sup.2, containing iron from 5 to 35 wt. % relative to the total weight of the electro-galvanized layer.

REFERENCES:
patent: 3791801 (1974-02-01), Ariga
patent: 4048381 (1977-09-01), Adaniya

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