Protection when it matters
While e-coating coils is recommended by OEMs, not all e-coating processes are the same. Some e-coat providers coat more than just HVAC&R equipment. They may coat radiators, auto parts, and various other metal components. The ElectroFin® E-Coat process is strictly dedicated to coating heat transfer coils manufactured primarily from aluminum and copper for the HVAC&R and electrical power systems industries.
Our process utilizes deep cleaning of the coil, followed by a proprietary e-coating process involving PPG POWERCRON® and curing process that is only available from ElectroFin®. This is why ElectroFin® E-Coat is regarded internationally as the premier coating solution for all major HVAC&R OEMs.
ElectroFin® E-Coat is a proprietary technology that can only be applied at our facilities. Our unique process provides an electro-deposition coating process that involves epoxy paint particles evenly suspended in deionized water. When electrically charged, the paint particles migrate to and bond with aluminum, copper, and other conductive metal surfaces that form the heat exchanger coils. Resin and pigment migrate to the part, and an organic uniform film is irreversibly deposited.
The ElectroFin® E-Coat bath is a mixture of 80-90 percent deionized water and 10-20 percent paint solids. The deionized water acts as the carrier for paint solids, which consist of resins (that provide corrosion protection), pigment (provides color, gloss, and corrosion protection), and small amounts of solvents (which help ensure the deposited film has a smooth appearance).
ElectroFin® E-Coat uses a proprietary e-coating process involving PPG POWERCRON®, the very best in e-coating technology. Our computer-controlled e-coat is the thinnest coating offered, with applications ranging between 0.6 and 1.2 mils.
By regulating the applied voltage, paint can be applied to a part at a controlled film thickness. Paint solids deposit initially in these areas closest to the counter electrode and become insulated to current. Because the resin is an electrical insulator, the paint deposition process slows down as the part becomes electrically insulated by the coating.
Solids are forced into bare metal areas to provide complete coverage. This unique phenomenon is particularly important for tiny cavities where fin and tube joints, high fin densities, and enhanced fins are present. The molecules are drawn to the metal and form an even, continuous film over the entire surface. At a certain point, the coating film insulates the metal, which stops the attraction and prevents further coating deposition (self-limiting nature of the coating process). This coating process creates a smooth, consistent, and flexible coating that penetrates deep into all coil cavities and covers the entire coil assembly, including fin edges. In conjunction with the coating material, the process results in a less brittle, more resilient, and more durable coating without bridging between adjacent fins.
The ElectroFin® E-Coat process guarantees complete and uniform encapsulation and 100% coverage. You can be assured that the coating penetrates into all coil cavities, covers the entire coil assembly, and provides superior protection in the most severe environments.