Parts Cleaning

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Published: 11/1/2016

Powder Coating Clinic: Discoloration of Metal-Flake in Powder
Q. We have a metal-flake silver powder color that we use regularly. If the surface is abraded with a Taber wheel—or even a pencil eraser—it darkens significantly in the abraded area. We even have this problem when our parts scrape against cardboard ...

Published: 11/1/2016

Powder Coating Clinic: Measuring Film Thickness before Cure
Q. How can I tell if the powder film build is thick enough before I cure the powder coating? We coat a lot of square footage and we need to control our cost. We often put on too much powder to avoid light coating. I need to know what my uncured film...

Published: 11/1/2016

Powder Coating Clinic: Sanding for Repair
Q. We sand aluminum die-cast parts that have minor defects in the powder coating before recoating them. The small areas of dirt, metal blemishes, fibers or similar particles are sanded using 120-grit sandpaper on an orbital sander. After recoating t...

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: 11/1/2016

Downdraft Versus Cross-Draft Booths
Q. We are considering a new spray booth, and we’ve read a lot about the different types of airflows. What can you tell me about downdraft booths and cross-draft booths, and what should I consider in adding one to my shop?

Published: 10/1/2016

Powder Clinic: Powder Versus Galvanizing
Powder Coating or Galvanizing: Which offers the best long-term protection from corrosion?

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.