Certified coating system

Certified coating systemDörken MKS-Systeme GmbH, parent company of Dörken Corporation USA, has developed a new, certified coating system for use in wind energy plants. The coating’s designated basecoat and topcoat, Delta-Tone Delta-Seal, respectively, are used for fasteners—such as for bolts employed to secure rotor blades. Germanischer Lloyd has granted the system certification for use on standard bolts for wind energy plants in the onshore and offshore fields. The fasteners coated with this system, in particular those in the dimension range M24 to M48, have already been successfully employed in other applications for many years.

Certification by Germanischer Lloyd was granted after a variety of tests were conducted. For example, the average coat thickness of the entire structure was measured at approximately 30 µm, using various methods. The corrosion durability of the test bolts was tested for a minimum of 1,500 hours in salt-spray testing, in accordance with DIN EN ISO 9227. The system of basecoat and topcoat with integrated lubricant demonstrated consistent overall coefficients of friction.

Dörken Corporation USA
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Volume: January/February 2013