finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
(current
topics)
topic 8176

How Do I Safely Remove "White Rust" From Hot Dip Galvanized Steel


(2001)

I saw a series of messages on this site concerning corrosion of hot-dipped galvanized steel. We have a very similar problem on stamping blanks and some stamped parts that were improperly stored and developed white rust.

My question is, what is the best method of removing the rust without removing the galvanized surface? I saw one letter that recommended the use of a 5% phosphoric acid bath. Is that the best method?

Mike Wood
stamping - Maumee, Ohio, USA


(2001)

There is some good information on white rust formation, prevention and correction at this web site

www.galvanizeit.org/publications/t-wss-97.htm [Ed. note: that site has been rearranged since this posting and the specified URL no longer works]

larry hanke
Larry Hanke
materials testing laboratory
Minneapolis, Minnesota





This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.