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Coating and Plating Processes - Brush Plating, Selective Plating
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Brush plating is an electrochemical process
that uses systems to electroplate, anodize, and electropolish localized
areas on both new components for imparting decorative, anti-corrosive or anti-wear properties, and parts that need coatings for repair
and dimensional restoration.
Brush systems can be portable. Unlike their tank counterparts,
brush plating systems use very small volumes of solution (usually only
one or two litres) and hand-held tools to apply the deposits and
coatings onto localized areas. These hand-held tools are covered with
an absorbent material that is saturated with a solution and then
brushed or rubbed against the part. Brush plating requires different
hand-held tools for each different solution in the operation.
A portable power pack (rectifier) provides the direct current
required for all the processes. The power pack has at least two leads.
One is connected to the tool and the other is connected to the part.
The direct current supplied by the power pack is used in a circuit that
is completed when the tool is touching the work surface. Preparation and finishing are carried out using the same techniques as for other reclamation processes.
Brush plating is particularly useful for building up material on components to be repaired where the component or assembly is too large to fit into a tank, where the process of dis-assembling the entire machine is costly, or where the components are too expensive to risk full immersion in a plating tank.
Suppliers With This Capability