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topic 3186

Special Aluminum Coating for tight tolerances


I'm looking for the right name or process for an aluminium coating that we had used back in Switzerland on all our tight tolerance aluminium parts: It was called : "ematalieren" It's supposed to be a similar coating as hard coat. It allows to coat parts within very small tolerances.

Best regards,

Georg Kohler
IllinoisIL 60007


There is a section (pg 452-456) in Vol 1 of The Surface Treatment and Finishing of Aluminum and Its Alloys by S. Wernick, R. Pinner, P.G. Sheasby about the Ematal process, it say's Originally oxalic acid acid solution containing salts of thallium, zirconium or titanium, there are also a number of formulations given for the original version and later versions of the solution


Richard Guise
- Lowestoft, U.K.

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