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topic 4447

Chromate Finish Zinc Castings


(2000)

I am attempting to chromate finish old pot metal (zinc casting) carburetors. I have not been able to remove the smut so that the chromate coating will adhere to the surface. What solutions can I use to etch and then desmut or activate the surface for chromate coating?

Michael Broussard
Industrial Plating & Metal Finishing - Albuquerque, New Mexico



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