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Exploring the: Quality Control Zone
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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
- 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
- Hardness of Hardcoat Anodize
- Question:
What would be the hardness of the Alcoa Alumilite 226 hardcoat finish? The substrate is 6061 alloy aluminum tubing. G.S.
Ask an Expert Published: 11/1/2008
- Glue Adherence to Black Anodize
- Question
We’re having a problem with glue not adhering to anodized parts made from extruded 6063-T6 aluminum and finished with heavy etch and black anodize per MIL-A-8625, Type II, Class 1. The problem parts come in batches, something lik...
Ask an Expert Published: 11/1/2008