Where the world gathers for
plating, anodizing, & finishing Q&As since 1989

-----

Selective conductive areas in anodized extrusion

2004

I need some localised areas they remain conductive in an aluminum extrusion after anodizing. Can I press-fit a "washer" into the extrusion that is plated with a material that is inert to the anodizing process in order to leave a conductive contact area within the anodized part?

Mike Stickelman
Product Design - Dayton, Ohio

2004

Yes, that's one way. Tapes, waxes, dipping compounds, caps and plugs are all possibilities. However, you may have a corrosion issue in that area, and unprotected aluminum will oxidize anyway, rendering it non-conductive. So the real answer is that you probably need to either chromate conversion coat or electroless nickel plate that area.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

finishing.com is made possible by ...
this text gets replaced with bannerText

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully 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 might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: