Letter 34026

Descaling SS 310  

+++++

I want to remove millscale (descale) SS 310 what should be the acids and proportions and how do I passivate and neutralise acid effect

Naresh Hinduja
Swan Enterprises Pvt. Ltd. - Chennai, Tamil nadu, India

Hello Naresh. Have you tried anything to date, and what were the results? Is a mechanical scale breaker part of the process, or no? Strong acid like nitric-hydrofluoric can be used, but the answer will be as vague as the question. Neutralization is usually just good rinsing followed by passivation, which can be with nitric acid or citric acid. Good luck.

Ted Mooney, P.E.  finishing.com Brick, New Jersey

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