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
topic 8183

Internal Anodization of Coiled Aluminum Tubes


(2001)

I'm trying to get coiled aluminum(6061) tubes anodized on the inside. The outside can be anodized, if convenient. Internal diameter is 3/8", 1/8" wall, coil diameter is 12" and the piece is about 12 ft long. Good dielectric strength is required. Unfortunately, this means it cannot be anodized straight then coiled.

Al Zeller
Michigan State University - E. Lansing, MI, USA


(2001)

I think I'll slightly disagree with your closing sentence, Mr. Zeller. Countless millions of electrolytic capacitors have been wound from sheets of anodized aluminum. It just may be possible to anodize and then bend.

But whether the tubing is straight or coiled, I think you need to get an anode to run through it. Perhaps a piece of semi-stiff aluminum wire running through it, with insulating standoffs every inch or so, looking like a set of strung beads? But I also think hydrogen and oxygen will rapidly build up during the processing, such that you need to pump solution through the coil, so the insulation beads will have to be substantially 'open' like the face of a tennis racquet. Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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