What is Electrostatic Spray?
The DECC Company’s electrostatic spray line is the workhorse of our company. With our focus on providing economical, high-quality rack-spray options for our customers, DECC’s electrostatic spray line can coat millions of parts, yielding consistent coating coverage and minimal variation throughout an entire production run.
How It Works
DECC’s electrostatic spray line passes components in front of four reciprocating bells that deliver a cloud of charged coating particles. Since the parts are grounded on the fixture from which they hang, the coating is attracted to the components. This application method provides an excellent “wrap” of the coating on the substrate, even on the side of the part not facing the bells.
DECC also employs two six-axis Fanuc robots at the back end of our electrostatic line for touch-up, allowing us to coat parts with almost any geometry. Where coating is repelled from concave areas of a part due to the Faraday Cage Effect when passing the bells, our robotic touch-up ensures complete coverage of all areas of the part.
As a result of the addition of robotic touch-up, DECC is now able to coat part geometries that were originally reserved for only a dip-spin application. Dip-spin is an economical choice for some components, such as fasteners. However, dip-spin-coated brackets with pockets can experience blistering and cracking from pooling coating. Parts that have protrusions or are of a thinner gauge steel can become bent and warped during processing. Although the dip-spin pricing is cheaper up front, it does not factor in the cost of sorting and scrapping material after coating. DECC’s rack-spray coating application ensures a high-quality, consistent coating, without damaging or warping, on every part.
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