Ebbinghaus offers duplex coatings for better corrosion protection

Duplex coatings are suitable for use in areas with particularly corrosive environmental conditions, such as applications in salty or chemically contaminated ambient air. In addition, duplex coatings are also applied to products that need to achieve a particularly long service life. Here, two different coatings are applied on top of each other on the workpieces. At the surface specialist Ebbinghaus-Verbund with its production plants in Hagenbach and Graz, the duplex coatings mainly consist of a CDP coating and a powder or wet paint coating. The previously applied KTL coating serves as a good primer for the subsequent application of the powder or wet paint coating. In addition to the additional passive corrosion protection, these fulfill further requirements such as chemical resistance and UV stability of the coating. The powder or wet paint coating can also be used to meet the customer's visual requirements by providing the desired color. In addition to the aforementioned combinations, surface specialist Ebbinghaus-Verbund also offers a duplex coating consisting of active and passive corrosion protection. Here, the active corrosion protection is first applied to the components using the zinc thermal diffusion process. A CDP, powder or wet paint coating can then be applied, depending on the customer's requirements. The experts at Ebbinghaus will be happy to help you select the right duplex coating for the requirements of the customer's components.

The selected duplex coatings can also be tested and analyzed in the in-house technical centre on request. Duplex coatings have a significantly higher protective effect than pure powder or wet coatings. The powder or wet coating protects the cathodic dip coating layer underneath. In the case of ZTD-coated workpieces, the active corrosion protection is also protected by the passive corrosion protection of a cathodic dip coating, powder coating or wet coating. By combining active and passive corrosion protection, workpieces can be protected in particularly corrosive environmental conditions. The Ebbinghaus Group also offers its customers several options for the pre-treatment of components. For example, either a chamber blasting system or a continuous blasting system is used for mechanical pre-treatment. The continuous blast machine offers optimum conditions for the cleaning of large series of components. The system works with a combination of degreasing and blasting, so that wet-chemical pre-cleaning is not necessary. For paint stripping, Ebbinghaus Verbund offers a fully automatic process and the choice between aqueous, highly alkaline or soft paint stripping, which is particularly suitable for light metals such as aluminum or die-cast zinc, as well as the removal of "old" duplex coatings.