Cathode electro-deposition is the most advanced and environmentally friendly water-based coating for metal parts. The combination of immersion and spray ensures that the paint reaches every corner of the component in its original shape. With excellent chemical resistance, mechanical durability, and aesthetics, CED has a very long salt spray life and is sought after by all automobile users. 

The electrodeposition of primer coatings has become universal in modern automotive paint stores.  Electrocoating is a  painting process that uses electricity to apply paint. This process works on the principle of “attracting the other side”. This process is also known as electrodeposition (ED).  

In ED, charged particles from the paint emulsion move to the anode (AED) or cathode (CED) under electrical force. The direct current accumulated by the bath moves the paint pigment and resin base to the surface of the body. The coating reaches the entire recessed area. The deposited membrane will not dissolve again. However, undeposited material will be flushed. Ultrafiltration (UF) equipment is used to separate the components of the ED ink from the non-film-forming components and recover the ink. 

The deposited film becomes a hard and durable polymer film after baking. Today, customers demand high quality and durability from the products they buy. Not only do you expect these products to work well, but they also need to look good and withstand corrosion for a much longer period of time. This finishing process is called electrocoating (e-coating).