Method for pretreating surfaces of steel parts for electroplatin

Details Method for pretreating surfaces of steel parts for electroplatin Method for pretreating surfaces of steel parts for electroplatin

1976-09-27

1978-11-28

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

204 34, C25D 536

Patent

active

041274504

ABSTRACT:
The susceptibility of steel to electroplating is improved, by an electrolytic pretreatment of the steel part. The steel part is connected alternately as cathode and anode in an electrolytic cell containing an electrolytic bath which is an aqueous solution of sodium sulphate of a concentration from 0.5 M to 2.5 M and a pH of 6 to 8, at a temperature of 20.degree. to 100.degree. C. and a direct current density of 1 to 60 A/dm.sup.2.

REFERENCES:
patent: 1041790 (1912-10-01), Herrmann
patent: 2685564 (1954-08-01), Emmett et al.
patent: 3075897 (1963-01-01), Higgs

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