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EN Plating deep blind holes.





September 5, 2010

Other then fixturing of spool type parts using solution feed tubes as recommended by a few plating companies. QUESTION Is there any plating methods(ie; ultrasonic) capable of full plating coverage into the bottom of blind hole bores (perhaps 1/4" dia. x 2" deep) without having to manually turn the part during the plating process as currently being done in attempt to flush and move plating solution into blind bore.

The material at the blind bottom hole being low carbon 1018 or non-magnetic iron has a propensity to rust during the pre-clean, nickel strike, or during the plating process not giving complete coverage.

Jeff Snow
Engineer - Rochester, New York, USA



September 17, 2010

You absolutely need to provide contact of the liquid to the surface for deposition. If any hole accumulates gas from bubbles it has to be regularly re-filled by turning it downside up, otherwise gas acts as a plug. One question, why and how are you striking the part? Low carbon steel can go directly to the EN after a good cleaning cycle.
G. Marrufo-Mexico

Guillermo Marrufo
Monterrey, NL, Mexico


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