What Is E-Coating?
E-coating is a paint process that uses electricity to coat a metal part with paint. The most common metals used include steel, zinc, brass, aluminum or any other conductive material. After cleaning, the entire part is immersed in the electrodeposition paint tank. The paint bath is comprised of 20% paint solids (the portion that remains on the part) and 80% deionized water.
Upon application of the electrical potential (voltage) the paint solids are transported by electrical current from the bath to the part’s surface one molecule at a time. As the exterior surfaces of the part become coated, an electrical resistance builds. Since electricity always seeks the path of least resistance the electrical current automatically flows to areas of the part not previously coated. This process continues until all surfaces of the part are coated with the same thickness of paint solids. When the entire part is coated with the proper film thickness the flow of electricity will slow to a stop. When the electrical current stops every surface on the part is coated with a uniform thickness of paint solids.
After the paint solids are applied electrically, all runs and drips that could cause an uneven film must be removed in the post rinses. An ultra filter, which separates deionized water from the paint solids, is the basis for the closed loop post rinse system. Rinse water is continuously refiltered and reused. The excess paint, not electrically deposited, flows back to the paint tank where it can be reapplied.
Once the runs and drips have been removed, the part transfers to the dehydration and cure ovens. The dehydration oven is used to remove all water from the electrically applied paint film. After all the water is removed the part enters the cure oven. In the cure oven, the paint film undergoes a molecular transformation. The paint solids that were applied electrically now crosslink with each other and become a smooth, even, layer of acrylic modified epoxy. This epoxy film is extremely dense, thin, smooth and resistant to attack by a wide variety of chemicals.
Our E-Coating Services
The Finishing Department has four fully operational e-coat lines that have been purchased new to eliminate downtimes and they are performing very well. We presently operate 3 shifts of production. Our current employment is 140 people and growing.We use OEM approved pre-treatment and paint. offering black, and red catholic epoxy e-coat. We specialize in both small and large parts which often require specific racking to eliminate defects caused by part geometry. Along with our standard e-coat process we offer unique partial coating capabilities. We paint tether and ISO FIX wires which require partial paintings
The Finishing Department paints metal parts supplied by manufacturers who require or choose the e-coat paint process. Because of the efficiency of the e-coat process and the assurance of uniform paint coverage many manufacturers are requiring that their parts are painted using e-coat The advantages to e-coat are numerous. If you are not familiar with the e-coat process, here are just some of the benefits from using the e-coat process for your manufactured parts.
- Full Paint Coverage – Low % of rejected parts
- High Productivity – Lower Cost
- Eliminates Paint Waste – Virtually 100% Transfer
- Maintenance Free Finish
- Low VOC (Volatile Organic Compounds) – Water based paint system
- HAPS (Hazardous Air Pollutants) Free Products
The Finishing Department Advantages
While everyone knows that quality, service and competitive pricing are the key to growing a strong business, achieving this is not something every company can accomplish. While acknowledging that the best technologies are an important part of success, the Finishing Department practices the most important rule for business success. That is having the right people on your team. The Finishing Department has a team that is dedicated to the quality and service that so many businesses just talk about. From the production associates to the president, all the personnel at the Finishing Department work hard to make sure every part is painted to highest quality in the most efficient method and ready for delivery on time.
Finishing Department has four fully operational e-coat lines that have been purchased new to maximize uptimes and they are performing very well. Our uptime consistently is at 98%+. We presently operate 3 shifts of production. Our current employment is 140 people and growing.
We use OEM approved pre-treatment and paint. offering black, and red cathodic epoxy e-coat. We specialize in both small and large parts which often require specific racking to eliminate defects caused by part geometry.
Along with our standard e-coat process we offer unique partial coating capabilities. We paint tether and ISO FIX wires which require partial paintings.
Partially Coated Parts
Using the latest technologies and innovative methods, we have become the forerunner in partial painted parts. We regularly e-coat paint tethers, ISO FIX wires and small stampings which require partial paintings. When you compare the cost of e-coating painting of tethers and ISO FIX wire with other E-Coat operations, you will find that the Finishing Department will consistently be more competitive.
E-Coat painting of tethers, ISO FIX wires, small stampings and other partially painted parts requires special handling, customized equipment and the knowledge to utilize these. The Finishing Department has these abilities.