Exploring the: Pretreatments Zone

55 Results for: Experts

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Published: 6/1/2017

How to Use Pretreatment to Improve Salt Spray Hours
Q. Our goal is to have our gas regulators pass ASTM B117 for 500 hours. We use an epoxy powder coat; parts are treated with zinc phosphate first, then powder coated. We are seeing the internal parts of the castings rusting prematurely. Which spec co...

Published: 6/1/2017

How to Strip Zinc Phosphate Without Using Chromic Acid
Q. I want to remove zinc phosphate from hardware parts after cold heading. Typically to remove zinc phosphate, I would soak in chromic acid at a high temperature, but this is not a viable or safe method for bulk treatment. Can I just hit the parts w...

Published: 3/1/2017

Can Aqueous Alkaline Cleaner Be Used on Aluminum?
Q. Should I not use the same bath to process aluminum and stainless steel? Can aqueous alkaline cleaner be used on aluminum?

Published: 11/1/2016

Powder Coating Clinic: Avoiding Rust on Parts
Q. We apply lighter colors of powder to our ticket machines for parking lots.

Published: 11/1/2016

Parts Cleaning Clinic: Brass Cleaning
Q. How do I clean brass to be powder coated?

Published: 11/1/2016

Parts Cleaning Clinic: Cleaning of Inconel
Q. What cleaning methods are recommended for finishing Inconel 718?

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...

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...

Published: 10/1/2016

Parts Cleaning Clinic: Zinc Shot Blasting, Zinc Plating Alternatives
David S. Peterson talks zinc shot blasting, zinc plating alternatives, and advantages to reducing the heating of alkaline cleaners.

Published: 7/22/2016

Parts Cleaning Clinic: Cleaning Oxygen-Free Copper
Q. Could you share with me how to lower or eliminate this defect and how to utilize automatic cleaning?