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 10891

Iridescent clear anodize


 

When we clear anodize aluminum we are not able to get a clear finish. We are getting an iridescent finish. We bright dip the parts before the anodizing in sulphuric acid process. Is there anyone who has any idea of what the problem can be?

Thanks,

Vero Dewis
- Florida


 

Hi Vero,

Are you examining the parts under DAYLIGHT or using some halogen light in the shop? Iridescence usually comes from a thin coating (below 0.3 mil) examined under halogen light. If the iridescence is a rainbow like, it could be related to a thin (almost non-existing) layer due to bad electric contact.

Hope this would be of help.

Hocine Djellab
Verdun Anodizing Inc. - Montreal, Quebec, CANADA



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.