Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

Passivation alternative

Dear Sir,

We are a manufacturer of Galvanized steel Structure. The galvanized products surfaces are treated after galvanizing by passivation in dichromate solution " Sodium Dichromate " Na2 Cr2 O7 . The objective of this treatment is to prevent the formation of "White Rust" on the galvanized surface, during storage, sea transportation and erection at sever corrosion site.Is there any other solution/treatment currently in practice to achieve the same objective?

M. Abdel Malik
- Abu Dhabi, UAE
2003

Alternative method of temporary white rust prevention is a harmless clear lacquer. Simple soak application directly after galvanizing

Dolf van den Berg
- The Netherlands
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: