-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 7319

Safer Alternative to HF Acid for Aluminum Brightening?


We're working with a client that is interested in replacing hydrofluoric acid with a safer alternative to remove brazing flux and oxide from aluminum parts. The flux can be removed with friendlier chemicals, but because of the need to provide a bright and shiny finished part the client has been using HF acid in low concentrations.

I've read a lot of information on other acid solutions to use for this purpose such as sulfuric and nitric (and combos, thereof), but ideally we would like present a much safer alternative to them than harsh acids (if it exists). I'm interested in seeing if anyone has any experience with using ultra-sonic baths with acetic acid or maybe phosphoric acid. Comments would be greatly appreciated!

Jim Kirlin
RMT, Inc. - Greenville, SC USA

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 Comment 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

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.