No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

ECGraining to Roughen Aluminum

Wish to achieve roughened surface on Al-Mg alloy via electro chemical graining. Generally, folks (litho sheet apps) attempt to achieve very fine graining to enhance resolution. I'm trying to obtain the opposite result. Would appreciate information regarding electrolytes, anode materials, voltage/current, current density, exposure times and upper end roughness limits.

Edward Patrick
- Murrysville, Pennsylvania
2000

I believe I would look for references for metallurgical etching of this alloy for microscopic examination, since the purpose of this procedure is to reveal the grain structure of the metal. anode materials are probably an "inert" material such as carbon or steel in an alkaline solution. electrolytes, voltage/current, current density, and exposure times are all interacting factors which will affect the result. upper end roughness limits: rough as a cob, I'd say:-)

I don't understand what result you are trying to achieve, is the result decorative or related to adhesion of subsequent treatments?

Regards, tom

Tom Pullizzi
Falls Township, Pennsylvania
2000

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: