C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/10, 204/133
C25D 5/08 (2006.01) C25D 3/02 (2006.01) C25D 5/54 (2006.01) C25D 17/18 (2006.01) C25D 17/20 (2006.01) C25D 21/00 (2006.01)
Patent
CA 1189819
ABSTRACT OF THE DISCLOSURE Apparatus for electrodeposition onto metallic and appropriately pre-treated non-metallic articles and for sub- sequent removal, recovery and re-circulation of surface- treatment liquid adhering to the articles, which comprises a drum for accommodating articles to be treated, anodes ex- tending in a generally semi-circular arrangement round the drum, an operating vessel containing the drum and anodes and which communicates with a supply vessel by way of an outlet opening having a controllable closure device means for es- tablishing reduced pressure within the supply vessel, and means for re-circulating surface-treatment liquid from the supply vessel to the operating vessel. Current densities of up to 20.0 A/dm2 can be achieved with layer thicknesses of 25 to 30 µm with quantitative recovery of the electrolyte in a continuous cycle.
396665
Marks & Clerk
Schering Aktiengesellschaft
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