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

topic 554

Can we use aluminum cathodes in HARD anodizing


We are installing an additional Hard Anodize line in one of our Plants & want to know if it is OK to use aluminum cathodes in hard anodize. We know you can use them in normal Type II sulfuric. All our other hardcoat tanks are stainless & thus the tank is the cathode.
Any info would be greatly appreciated.

David A. Kraft
- Long Island City, New York


I had a small poly-pro tank that I lined with aluminum strips and used them as the cathode system. I also used a pulse rectifier and I loved the results. A very even coating.

Kelly Day
Micron Tech Inc.


David, the use of aluminum cathodes in anodizing (Type II or Type III) has been proven and documented for years. Refer to my technical article written MANY years ago for specific details. Generally, use 6063 -T6 or T5 ...Never T-52! All welds should be made with 5356 alloy welding rod. Anode:cathode ratio should be approx. 3:1.

Charlie Grubbs
- Alpharetta, Georgia

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 This Week's HOT 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     -    Privacy Policy
How Google uses data when you visit this site.