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Anodizing Clinic: Measuring Color of Coatings with a Colorimeter
Q. Recently, a company asked us to match its samples so we could do work for them. According to our method, we matched the samples, but they were rejected when they were sent to the company. We were told the samples were out of tolerance. We discove...
Ask an Expert Published: 12/1/2016
Anodizing: Corrosion on Hardcoat Anodized 7000 Series Forging
Q. I sent you photos of two parts that are alloy 7050 forgings. On these parts there are spots that appeared as a result of Type III (hardcoat) anodizing that were not present before anodizing. They look like corrosion of some sort, but the corrosio...
Ask an Expert Published: 11/3/2016
When Black Dye is Not Black
We are sending aluminum extrusions to our outside anodizer for Type II anodize and black dye, and we are encountering several problems, notably that the newly black anodized parts exhibit a greenish tint.
Ask an Expert Published: 5/1/2011

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