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topic 5399

Brush Plating


Am curious about comparative durability of brush plating as opposed to tank or immersion plating. Will brush plated chrome last as long as tank plated chrome when exposed to the weather? Is brush plating considered any more safe an application than tank plating as far as chemicals are concerned?

Bill Miller
- Shinnston, West Virginia USA


Unfortunately, the answer to your question is "it depends" on your criteria. Brush plating is probably 10 times more sensitive to operator influence than tank plating. Operators are typically very poorly trained. (NOT ALWAYS)!

0.001 of say nickel, is a very columnar vs laminar for tank plating. Therefore, it is easier to have a vertical void that does not show.

Brush plating can be an excellent plating process, but normally is not the equal to a tank process on OEM. Conversely, try to take a shaft out of a large boat, That is why the US Navy has brush units on many of its ships.

James Watts
- Navarre, Florida


All things being equal, the brush plated chrome will be as durable as tank plated chrome. The caveat is, of course, that things are not always equal. Typically, a brush plated deposit is not as thick or as uniform, and the surface preparation prior to plating is not as good.

With respect to toxicity, etc., brush plating solutions tend to be MORE concentrated than their tank brethren.

James Totter
James Totter, CEF
- Tallahassee, Florida

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