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Exploring the: Painting Quality Control Zone
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- Weld Drag Marks
- Regarding the question by B.F. (January 2011) concerning spot weld drag marks: While your answer was certainly correct, the question may still not be completely answered.
Ask an Expert Published: 9/28/2012
- Painting Stainless Steel
- We are concerned about paint adhesion on equipment cabinets made of mostly 41003 (a utility-grade stainless steel that is 12 percent Cr) and either 304 or 201 for the hard-to-draw parts.
Ask an Expert Published: 7/31/2012
- Painting Window Screening
- We apply paint by a dipping process to insect screening made from aluminum alloy 5052, then use a high-speed rotating beater to beat away excess paint from between the wires. The finished product shows some bare spots on the surface, and we don’t kn...
Ask an Expert Published: 7/9/2012
- Mysterious Air Bubbles
- We have a problem with air bubbles from an air-piloted fluid regulator in our finishing operations.
Ask an Expert Published: 7/5/2012
- Painters' Courses
- I am the manager of manufacturing for a company located in the Seattle, Wash., area that supplies detail parts, primarily to the aerospace industry. One of my responsibilities is the paint line, where we apply water-based paints and primers, as well...
Ask an Expert Published: 3/29/2012
- Salt Crystals on the Paint Film
- We get pinholes and small blisters in the paint film on our aluminum equipment enclosures. There are also, on occasion, table-salt-size crystals on the surface that can be brushed off. Can you tell me what is going on and how durable the finish will...
Ask an Expert Published: 3/26/2012
- Painting Molded ABS
- We are having a problem painting an ABS injection-molded part, with dark, cloud-like spots and long parallel splays. The defect is consistent in location on each molded part. Can you help?
Ask an Expert Published: 3/2/2012
- Accelerated Tests vs. Service Life
- We manufacture coated pipe products, and I’ve been asked to come up with a guaranteed lifetime period for a “Single Wall Steel Tube” pipe having a coating that is 25 microns thick. The coating withstood the CASS test for 60 hrs. How many years it wi...
Ask an Expert Published: 2/1/2012
- Protecting Brass
- I have had customer complaints about the clear coat peeling and corrosion problems on solid-brass numerals for house identification. Can you give any tips on how to polish the brass and protect it for years to come?
Ask an Expert Published: 2/1/2012
- Fish Eyes
- I recently have been having a problem with fish eyes when spraying epoxy paint, Mil PRF-22750F, FED color #24052.
Ask an Expert Published: 2/1/2012