Electroplating aluminium stock

Details Electroplating aluminium stock Electroplating aluminium stock

C - Chemistry, Metallurgy

25

D

204/20

C25D 5/44 (2006.01) C25D 3/32 (2006.01)

Patent

CA 1066650

A B S T R A C T A process for the production of electroplated aluminium stock, such as strip or wire, comprises passing the stock continuously through a bath having a high dissolving power for aluminium oxide, such as strong aqueous sulphuric acid and phosphoric acid and subsequently through an electroplating bath, the first bath having a cathode electrode and the electroplating bath having an anode electrode so that the stock is anodic in the first bath. The stock may pass through one or more intermediate non-electrolytic treatment stages, such as immersion tinning or zinoating. It may also pass through one or more electrolytic pretreatment stages during its passage between the first bath and the electroplating bath. In such pretreatment stages, such as the appli- cation of a bronze strike, there may be an anode electrode at the same potential as the anode in the electroplating bath.

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