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Black, Pitted Areas on Anodized Parts
We anodize aluminum cookware and have recently been getting parts with black pits scattered all over them. What is this and how might it be happening?
Ask an Expert Published: 5/6/2013
Pink Coating on BSA Parts
I understand that iron and poor current can cause a pink coating on boric-sulfuric anodized (BSA) parts. What levels of iron are permissible before reaching the pink-colored coating? Are there any other things we could be missing?
Ask an Expert Published: 2/7/2013
Chemical Film Staining
What technique is used to avoid staining on aluminum parts when chemical film per Mil-C-5541 is applied?
Ask an Expert Published: 2/1/2013
Parts Burning During Hard Anodizing
What could cause parts to burn during hard anodizing?
Ask an Expert Published: 11/7/2012
Rinsing Blind Holes Prior to Dying
I have problems with leaching from blind holes in black anodized parts.
Ask an Expert Published: 10/31/2012
Color Matching
We have an accepted color that we are using for a dyed anodized finish on 6061. Over the years, the approved color somehow went from an original production run coupon to a standard Pantone color. Unfortunately, the Pantone color doesn’t match the ap...
Ask an Expert Published: 8/3/2012
Hardcoat Anodize Thickness Problem
During the anodizing cycle, how can we check to see if the coating thickness is reaching the thickness requirement stated on the drawing?
Ask an Expert Published: 2/1/2012
Is it Anodized or Not?
What would be the best way to indicate whether or not an aluminum part has been electro-polished and anodized?
Ask an Expert Published: 2/1/2012
Technical References for Anodizing
Are there any resources to read and keep on hand as references for troubleshooting appearance issues?
Ask an Expert Published: 2/1/2012
Blistering of Anodic Coating on 7075 Alloy
We are facing a blister problem on 7075 alloy inside the bore diameter of our cylinder base. We noticed that this problem is occurring during dyeing process and not after hard anodizing.
Ask an Expert Published: 10/25/2011

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