basics
How to Eliminate White Chalky Substance from Vibratory Finished Parts
Q. We are getting a white chalky substance left on our aluminum parts after vibratory finishing and it affects the coating adhesion. How do we eliminate this problem?
Read More
Crack Formation during Electrodeposition and Post-deposition Aging of Thin Film Coatings - 5th Quarterly Report
This NASF-AESF Foundation research project report covers the fifth quarter of project work (January-March) on this AESF Foundation Research project at the University of Houston. The objective of the work is to study fundamental and practical aspects of crack formation in electrodeposited thin films.
Read More
How to Use Selective or Brush Plating for Zinc-Nickel
Q. Is there an approved process to repair damaged or defective zinc-nickel on aircraft components?
Read MoreHow to Make Automotive Paint Shops More Sustainable
Q. Our paint shop is the place of highest energy consumption and highest VOC and CO2 emissions in the car manufacturing process. What measures can be taken to reduce them?
Read MoreHow 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 could I call out to increase corrosion protection, MIL-DTL-16232G Type Z, class? Or TT-C-490, Type I?
Read MoreHow to Identify and Maintain Ecoat Bacteria
Q. Our electrocoat supplier tested our system for bacteria and reported that we are positive for bacteria. What kind of bacteria are found in ecoat systems and where can they come from? How can this affect the operation of the system?
Read MoreHow 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 with a higher concentration of potassium hydroxide at a higher temperature to remove the zinc phosphate?
Read MoreHow to Increase Throughput with Racking
Q. How can I increase the throughput of my finishing line through proper racking protocols?
Read MoreHow to Reduce Heat Gain in a Building with a Powder Coating Operation
Q. We get an enormous amount of heat in our building when our powder system is running. In the summer months, the building is almost unbearable. How can we reduce heat gain from our equipment?
Read MoreHow to Solve Filiform Corrosion Issues When Spraying on Aluminum Alloy
Q. We are spraying on an aluminum alloy and are having problems with aluminum filiform corrosion. Can you help me understand what is causing this?
Read More
