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topic 9737

Cadmium Plating Touch-up

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Is there an easy method of touching up scratches/abrasions to electrical connectors that have an olive drab cadmium plating? The connectors are connected to cables, so they will require touch-up with a brush if possible.

Mike Kvam
electronics - Ronan, Montana, USA


Hello Mike,

Brush electroplating has long been used to repair cadmium plating that has been worn or scratched off the surface of a metal component. Brush electroplating is a selective, portable process that will allow the operator to deposit metals such as cadmium directly on a damaged area.

The only problem that may arise is with the chromate coating. While olive drab chromate coatings can be applied to the cadmium plated area, the color of the newly chromated area may not be a perfect match with the existing coating color. The new deposit will meet functionality requirements but may fall a bit short on the cosmetic end if an exact match is required.

Chris Helwig
- Valencia, California, USA

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