43021

Polarity of Type I Anodize [Arizona] 

November 13, 2006

If the tank is the cathode is that hooked up to the positive lead of the rectifier. I heard from an outside lab that the leads were reversed for chromic anodizing. Is this correct?

Chris Rademaker
- Phoenix, AZ, USA

In all anodizing, the positive juice goes to the workpiece, negative to the cathode(s).

Anode - oxidation
Cathode - reduction
"An Ox, Red Cat"

Dave Wichern - Bronx, NY, USA

I'm positive that I've seen an ox before, but it's a negative on the red cat, David :-)

 
Ted Mooney, P.E.
finishing.com Inc. - Brick, NJ