Electrostatic Spray Processes

摘要

Electrostatic finishing got its start in the early 1950s. Coatings engineers needed an application method that would significantly increase transfer efficiency and reduce finishing costs. They reasoned that particles and objects with like charges repel each other, and objects with unlike charges attract each other. The same would apply to charged spray coatings and a part to be painted. They discovered that by negatively charging the atomized paint particles and positively charging the workpiece to be coated (or making it a neutral ground), an electrostatic field would be created that would pull paint particles to the workpiece. (See Fig.1.)