Electrostatic coating is a coating process that employs charged particles to more efficiently paint a workpiece. Paint, in the form of atomized liquid, is initially projected towards a conductive workpiece using normal spraying methods, and is then accelerated toward the work piece by a powerful electrostatic charge.
Process: The workpiece travels down a conveyor belt towards a paint booth where it is sprayed electrostatically charged paint particles. After the workpiece is coated, it continues on the conveyor belt to an oven, where the paint is cured. The benefits to the process of electrostatic coating are the ability to recover the little over-spray and having the process automated which will cut costs. The reason for the little overspray is the paint particles that do not hit the piece will turn in the air and go back to the piece. Everything in the area of the coating must be grounded to prevent static buildup and can easily arc, damaging the hanging devices and/or the locations where the hanging devices rest on the conveyor. All hangers, conveyors, etc. must be cleaned often to ensure a good ground.
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