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Water Quality in the Anodizing Process
Q. I would like to know more about the physical and chemical parameters that are used to evaluate the quality of water used in the anodizing process.
Ask an Expert Published: 1/1/2017
Anodizing Clinic: Sealing with Distilled Water
Q. Can distilled water be substituted for deionized water? Our facility can create a distilled water heated bath fairly easily because we already produce distilled water for another process. A DI water bath would be much more expensive. 
Ask an Expert Published: 1/1/2017
Anodizing Clinic: Painting Parts After Anodizing; Seal, or No Seal?
Q. In conversations with our anodizer on the best way to seal parts for adhesion prior to painting, he referred to a choice of either a final hot water immersion at around 120°F with no seal or a hot water seal at a much higher temperature. What is ...
Ask an Expert Published: 12/28/2016
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
Parts Cleaning Clinic: Cleaning of Inconel
Q. What cleaning methods are recommended for finishing Inconel 718?
Ask an Expert Published: 11/1/2016
Parts Cleaning Clinic: Phosphate Coating Problems
Q. We electrocoat sheet metal, iron castings (machined and non-machined) and aluminum castings (machined and non-machined surfaces) and are having problems with poor phosphating on aluminum substrates. We maintain the free acid at 0.7-1.1 points and...
Ask an Expert Published: 11/1/2016
Parts Cleaning Clinic: Pretreatment Equipment Suppliers
Q. I am researching manufacturers of aqueous part washers and phosphate pretreatment systems for powder coating, looking for companies that build conveyor systems, washers and treatment systems; not parts washers. The parts to be cleaned are various...
Ask an Expert Published: 11/1/2016
Anodizing Q&A: Rinsing Blind Holes Prior to Dying
I have problems with leaching from blind holes in black anodized parts.
Ask an Expert Published: 2/1/2016
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

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