We offer Cathodic E-coating using the BASF paint process. This offers superior corrosion resistance and durability, making it suitable for long-term protection. E-coating performs well when compared to similar priced processes, achieving in excess of 1000hrs salt spray (ASTM B 117).
Electrophoretic coating is used for a high-quality finish as it has a range of benefits. It provides excellent corrosion protection for equipment exposed to harsh environments. Its application also provides consistent coverage, even in tricky places. E-coating is an economical and a more sustainable choice compared to other electrophoretic coating methods. It can minimise overspray in large-scale production and, when using water-based coating, e-coating has fewer volatile organic compounds – these compounds can sometimes lead to health and environmental risks.
The main principle of electrophoretic coatings is that opposite charges attract each other. During e-coating, a current is applied to create a voltage between a conductive part and an electrode. When immersed in the e-coating paint tank, the electrically charged paint particles coat the conductive part.
The deposition is self-limiting and slows down as the applied coating electrically insulates the part. Electrocoated solids initially deposit in the part areas that are closest to the counter electrode. As these areas become insulated to the current, solids are forced into more recessed bare metal areas to provide complete coverage. This phenomenon is known as throwing power and is a critical aspect of the electrophoretic coating process. The end result of this effect is a fairly even deposit thickness in recesses and on corners and edges. This uniformed coating thickness means that e-coating provides excellent corrosion protection.
E-cote provides both a protective and decorative coating, which is highly cost-efficient. As the part will be submerged to be covered, e-cote also offers complete coverage of the base part, with no overspray issues, and consistent thickness of the coating.
Electrophoretic coatings are also particularly resistant to salt spray and offer acidic resistance as well. This makes e-cote ideal for industrial applications, although the most popular industry for electrophoretic coatings is automotive.
Environmental advantages include low to zero VOC and HAPs. Electrocoating products are also free from heavy metals.
RACK
The rack plating process involves items to be coated on an electrically conductive jig / rack. As a pre treatment the parts are cleaned and pre treated with a conversion coating to prepare them for e-coating.
The rack is then submerged into a series of tanks containing the appropriate chemical solutions, to begin the plating process. This is a more costly option than barrel platings but may be more suitable for large or complex parts.
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