Parts Cleaning

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Published: 8/1/2017

How to Implement Ambient Temperature Cleaning
Q. How can we find an ambient temperature spray cleaner to implement for our five-stage pretreatment line used prior to powder coating? Cleaning expert David Peterson has the answer. 

Published: 7/25/2017

How to Identify Substrate or Paint Defect
Q. Over the past several years we have had a coating defect anomaly randomly show up on painted parts...Cleaning expert David S. Peterson takes a close look at cleaning processes to identify the root cause. 

Published: 6/1/2017

Do Your Own Compatibility Testing
It’s helpful to check for compatibility problems before setting up a new cleaning process, before adding a new product and before changing a process.

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: 6/1/2017

Intermittent Phosphate Line Usage
Q. I inherited a cleaning and phosphate line and over the last two weeks, we have lost our phosphate solution twice. I am told it is because we have lost iron in the solution. Is there an additive that can be used to help maintain the solution as th...

Published: 4/1/2017

How to Stop Outgassing with Die-Cast Parts
Q. We run aluminum extrusions using a chrome treatment conversion coating. We began running aluminum die-cast parts and are seeing small blisters and holes in the coating. How can we stop this?

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: 1/1/2017

How to Improve Liquid Corrosion Resistance
Q. How can we improve the desired corrosion resistance expected from our coating?

Published: 1/1/2017

Liquid Coatings Clinic: Correcting Liquid Adhesion Issues
Q. I cannot get the desired adhesion of my coating to my part. What should I look for to fix this problem?