Spraying Small Parts
What would be the recommended spray gun equipment for applying coatings per MIL-PRF-22750, DOD-P-15328 and MIL-DTL-53022 specifications to our components and subsystem for military applications?
#military
Q. My company manufactures components and subsystem for military applications, some of which need to be painted or coated per MIL-PRF-22750, DOD-P-15328 and MIL-DTL-53022 specifications. The components vary in size, but nothing is larger than 6 × 6 × 2 inches. We are in the process of upgrading our painting facility. What would be the recommended spray gun equipment for applying these types of coatings to our products? K.O.
A. The size and shape of your products make them perfect candidates for electrostatic spraying. You could rack several parts fairly close together at a time and paint them efficiently, so I would recommend using an airless electrostatic spray gun. On the other hand, if your parts have inside corners, you may have to use air-assisted electrostatic spray guns to overcome the Faraday cage effect.
If you are contemplating building a new, conveyorized system, the parts can be painted using automatic or manual spray guns. Manual guns would suffice for batch processing. For information on electrostatic spray equipment suppliers, go to PFonline.com/suppliers and click on Painting, then Painting Equipment, electrostatic spray.
RELATED CONTENT
-
Electrodeposition of Nanocrystalline Cobalt-Phosphorus Coatings as a Hard Chromium Alternative for Use in DoD Acquisition Programs
Electrolytic hard chromium plating (EHC) is a critical surface finishing technology that is used for applying functional coatings for corrosion and wear resistance to aircraft components in manufacturing operations and for re-build of worn or corroded components. However, EHC plating baths contain hexavalent chromium, which is a known carcinogen and environmental hazard. Therefore, the replacement of EHC in aircraft manufacturing activities and maintenance depots is a high priority for the U.S. Department of Defense (DoD).
-
Hex Chromium-Free Sealants for Defense and Aerospace
Results of second phase of research conducted by top defense contractors.
-
Evaluation of Hexavalent Chromium Free Bond Primers for Aerospace and Defense Applications
Three hex chrome free bond primers demonstrated that they can surpass the 960 hour threshold before exhibiting panel corrosion away from the scribe.