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Clear Anodize as a Paint Base
Our parts are generally Type III (hardcoat) anodized, sometimes duplex-sealed and sometimes unsealed. Our end-products are subject to sea water, and we try to adhere paint and polyurethane potting compounds to some of the parts. Would paint adhesion...
Ask an Expert Published: 10/23/2013
“Water-Break-Free” Test
What is a “water-break failure” test?
Ask an Expert Published: 5/3/2013
Black Power on Die Casting After Anodizing
After anodizing there is a loose, black powder that can be removed just by touch. Can you tell me why this happens and recommend a method to prevent it?
Ask an Expert Published: 8/1/2010
Dying Anodized Parts With Small Holes
We send our 6061 aluminum bars to an outside anodizer for Type II anodize and black dye. These parts have several very small diameter, blind holes, both threaded and non-threaded. When we get these parts back from the anodizer, the tapped holes will...
Ask an Expert Published: 8/1/2010
The Problem of Sealing Smut
Is there an anodizing cleanliness standard that is reasonable for our suppliers to meet? Is there an ISO, ASTM, IPC, Nadac or any other standard?
Ask an Expert Published: 2/1/2010
Dichromate Sealing and Fatigue Life
We are looking for some references that show that dichromate sealing restores the loss in fatigue life caused by hard anodizing aluminum alloys.
Ask an Expert Published: 2/1/2010
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
Problems with Black-Dyed Parts
Recently, we’ve had rejected parts because the black dye is coming off when the parts are wiped down with DI water.
Ask an Expert Published: 11/1/2008
BLACK SUBSTANCE ON RAG
We are yellow chromating aluminum alloy 360 die castings. After processing, a grey/black material appears on rags used to wipe the parts. What is this material, and can it be prevented?
Ask an Expert Published: 8/1/2008
Testing for Effectiveness of Aluminum Sheet Cleaning
Question: We are currently using a dyne solution as well as water break test to determine the effectiveness of our aluminum sheet cleaning.
Ask an Expert Published: 8/1/2003

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