ED coating

ED coating (Electro-Deposition coating) is an advanced surface treatment method that provides highly effective and uniform corrosion protection, even on components with complex geometries, cavities, and hard-to-reach areas. The process is based on electrodeposition, where the paint is applied using an electric current, ensuring a uniform film build-up with excellent adhesion.

A typical ED coating layer is approximately 20–35 µm thick and functions as a dense barrier protection. Unlike metallic coatings, which often protect by sacrificial action, the ED coating works by sealing out moisture, dirt, and corrosive substances. This makes the method particularly suitable as a primer before powder coating or as a standalone black topcoat in less demanding environments. However, since the epoxy-based ED coating is sensitive to UV light, it should be overcoated when used in outdoor applications.

To achieve optimal results, proper pre-treatment is essential. We use Oxsilan®, a modern, chromium-free, silane-based technology that replaces traditional phosphating. Oxsilan® provides an excellent adhesion base for ED coating, while also offering superior corrosion resistance and greater environmental compatibility compared to older pre-treatment methods. The combination of Oxsilan® and ED coating results in a durable, long-lasting surface treatment that meets high standards for both quality and sustainability.

Advantages with ED coating are:

• High corrosion resistance even with thin layers.
• Uniform coverage on complex parts and hard-to-reach surfaces.
• Excellent adhesion for subsequent coatings, such as powder coating.
• Applicable to multiple materials, including steel and aluminum.
• Good chemical resistance against many substances.