Pickling of aluminum

Details Pickling of aluminum Pickling of aluminum

1976-04-07

1977-08-16

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204231, C25F 100, C25F 104, C25F 700

Patent

active

040424758

ABSTRACT:
Articles of aluminium or aluminium alloys are pickled by placing them as anodes into a sulfuric acid bath containing no chromic acid or bichromate and connecting them by an electrical circuit including a D.C. potential source to a suitable cathode placed in the same bath, then imposing a certain control voltage from the potential source onto the anode and maintaining the resulting anode voltage at a substantially constant level during the whole pickling period. Means may be provided for continuously measuring the anode voltage and re-adjusting it to keep the voltage constant.

REFERENCES:
patent: 2040618 (1936-05-01), Mason
patent: 3694334 (1972-09-01), Bombara

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