Device for eliminating impure ions in chromium plating bath

Details Device for eliminating impure ions in chromium plating bath Device for eliminating impure ions in chromium plating bath

1975-06-02

1977-02-01

Tufariello, T. M.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204232, 204290R, C25C 110, C25D 304

Patent

active

040060721

ABSTRACT:
This disclosure relates to a device for eliminating impure ions in chromium plating bath such as Sargent bath or Chromate bath. Also, the disclosure relates to specific anode used therein and chromium plating system combined with the device. According to the device, the impure ions such as those of Fe, Ni, Cu, Pb, Zn, etc. are eliminated from the bath in the form of slime which mainly precipitates on or around the anode under the condition of DC 1 to 10 volt between the electrodes and anode current density of 1 to 100 A/dm.sup.2.

REFERENCES:
patent: 2652925 (1953-09-01), Vermeiren
patent: 3061537 (1962-10-01), Yagashita
patent: 3457152 (1969-07-01), Maloney, Jr.
patent: 3839180 (1974-10-01), Takaysu

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