Electrophoretic Deposition Coating or EPD is a flexible, cost-effective method of coating complex shapes or surfaces resulting in a highly durable finish. It is often used on metal parts to provide corrosion resistance and protection against UV light. Applications for EPD coating also include products such as medical supplies and equipment, automotive parts, consumer electronics, high-tech computer hardware, sports equipment, defense and aerospace, space technologies and much more.
What Is EPD Coating?
EPD is the application of organic lacquers to metallic substrates using electric current. Employing state-of-the-art technology, this process deposits an organic coating to any metal object with proper pretreatment.
The substrate is initially immersed in a paint or epoxy bath. An electric current is used to attract the particles that are suspended in the liquid solution and deposit them onto the surface of the substrate. Regulating the coating thickness is done by precisely increasing or decreasing the voltage level of the electric current until the desired coating level is achieved. Lastly, the coated substrate is cured in an oven to promote cross-linking.
Why Is EPD Coating Used?
The EPD coating application process is typically the best option when coating parts that contain hard-to-reach areas or on smaller parts with a lot of detail. The e-coating process provides greater regulation of the thickness level making it much easier to produce a thinner coating.
The coating can be clear or colored, translucent or opaque, and has a uniform thickness covering the object. EPD coating is extremely durable and resists the effects of chemicals, tarnishing, abrasion, oxidation, and UV light.
Benefits of EPD Coating
- Durability – Adding e-coating to intricate metal products will ensure they last longer and stand up better to harsh environmental conditions.
- Superior Coverage – EPD coating is the best option for accessing hard-to-reach parts within metal products by following the contours of complex shapes without erasing part features.
- Corrosion Protection – EPD coatings are known for their superior corrosion resistance and UV protection, which is why so many companies choose the process for industrial applications.
- Selection – EPD coatings come in a wide range of colors including metallics simulating gold, silver, or bronze and can be either opaque or translucent. Custom color matching is also available.
For information on how PowderCoat Services can help you with your EPD Coating finishing needs, contact us here.