Parts Cleaning Clinic: Brass Cleaning
Q. How do I clean brass to be powder coated?
David Peterson
Featured Content
Q. How do I clean brass to be powder coated?
A. Assuming you have some mill oil or metalworking lubricant on the surface of the brass, the minimum pretreatment needed is a degreasing of some type. Depending on what you have available and the number and size of your parts, that could range from a manual wiping with a solvent from your hardware store (naphtha or mineral spirits) with clean, lint-free rags, to a fully automated, conveyorized spray wash system. You will need to make the decision as to what to do based on the size of the operation you are undertaking.
If only applying a clear powder coat, then you will need to brighten the brass in some way. This can be accomplished by use of specially formulated cleaners. Most are mildly to strongly acidic. This deoxidizes and brightens the surface prior to powder coating. Most of these chemicals can be provided by suppliers at listed on PFonline.com.
Originally published in the November 2016 issue.
RELATED CONTENT
-
Preparation of Stainless Steel for Powder Coating
Should type 316 stainless steel castings be sandblasted before powder coating, or can they be chemically etched? Should the parts be pre-heated in an oven before coating?
-
Coating Systems with the Best Long-Term Performance
The best protection against corrosion and UV exposure, says Axalta’s Mike Withers, is electrocoat and a super durable powder coating.
-
Understanding Infrared Curing
Infrared cure is gaining increased attention from coaters as a result of shorter cure cycles and the possibility of smaller floor space requirements when compared to convection oven curing.