David S. Peterson
David S. Peterson answers reader questions about aqueous cleaning, solvent cleaning, drying, and pretreatment for plating, painting, and powder coating.
Got a question or comment for David? Send him an email.
We are running high-speed, reel-to-reel plating of gold-nickel-tin and palladium-nickel, and using bipolar cleaning. I am somewhat confused about electrical connections in bipolar cleaning systems.
Ask an Expert Published: January 06, 2014
Is there a procedure or mil-spec for point-of-use inspection to verify the cleanliness of the compressed air supply used in chemical processing area?
Ask an Expert Published: January 02, 2014
We are spraying and wiping down parts with thinner and acetone, and want to move to some kind of cleaning tank and/or phosphate solution. Can you recommend a system?
Ask an Expert Published: December 30, 2013
How can we manage and control stabilization of alkalinity reserves and acid acceptance level of perchloroethylene in metal cleaning applications?
Ask an Expert Published: December 23, 2013
In a dragout /rinsing process, is cold water effective or beneficial after a hot water rinse?
Ask an Expert Published: December 06, 2013
Why do we have problems with cleaning in low-current areas on our barrel alkaline zinc plater?
Ask an Expert Published: December 04, 2013
What ultrasonic frequency is best for removing corrosion on stainless steel?
Ask an Expert Published: December 02, 2013
We have a five-stage wash system using an alkaline cleaning package. Should the rust inhibitors coming in on our parts be water-soluble?
Ask an Expert Published: November 27, 2013
Who or what government department handles Mil Spec approval?
Ask an Expert Published: November 25, 2013
We have problems getting a clean surface to clear-coat bronze door skins. We wipe down the surface with lacquer thinner using microfiber cloths but get very small lint, fibers and specks in the finish. Do you have any suggestions?
Ask an Expert Published: October 03, 2013