Chemistry: electrical and wave energy – Processes and products
Patent
1984-02-24
1987-07-21
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 28, 204130, 204211, 204228, 204267, 204 561, C25D 1102, C25D 1900
Patent
active
046816658
ABSTRACT:
The present invention relates to a process and apparatus for electrochemical treatment in a static mode or in a feed motion mode of the surface of metal products of elongate shape.
The process is characterized in that cathodic and anodic zones are produced within the same volume of electrolyte, the zones being separated from each other and being displaced parallel to the product in a cyclic manner.
The process is carried out in a cell having a single compartment in which there are at least four electrodes, two of which have voltage applied thereto.
The invention is applied more particularly to aluminium, magnesium, titanium and alloys thereof, in order to provide for regular treatment of the entire surface of the product.
REFERENCES:
patent: 2267146 (1941-12-01), Wilson
patent: 3420760 (1969-01-01), Freedman et al.
patent: 3453201 (1969-07-01), Mihara et al.
patent: 3471375 (1969-10-01), Cooke et al.
patent: 3755116 (1973-08-01), Terai et al.
patent: 4214961 (1980-07-01), Anthony
Guillermet Robert
Ladet Michel
Laslaz Gerard
Le Bars Claude
Aluminium Pechiney
Leader William T.
Niebling John F.
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