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Metal finishing Q&As since 1989

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Manganese coating

2006

i) How can roughness of Manganese coating be controlled?
(ii) What can be added to the bath to control Red Spots/Rust on components after 24 hrs.

We are adopting the following procedure?

* Components are MS pipes about 1 ft. long and 1 and 1/2 inch diameter.

* Oil cleaning -> water rinse-> water rinse

* Refining -> Mangenese Phos.-> water rinsing -> Hot water rinsing->oiling

Hem Tewari
Shri Metchem - V.V. Nagar, Gujarat, India

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