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Ted Mooney, P.E. RET
Pine Beach, NJ

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Stripping zinc phosphating layer from iron

2006

Hi
I need to know the components for alkaline stripping of zinc phosphating layer from iron.
I should use alkaline cleaner for removing zinc phosphating. I used NaOH + KOH AND trisodium phosphate ⇦ this on eBay or Amazon [affil links] but I not received a good answer from this material .

Shayan
- Iran

Ammonium hydroxide mixed with ammonium dichromate works good. Mix 44 g of the ammonium dichromate powder with an imperial gallon of ammonium hydroxide.

Ronald Zeeman
Coil Coating - Brampton, Ontario, Canada
2006

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