This coating system fulfils high corrosion protection requirements. | FASTENER EURASIA MAGAZINE
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Optimum screw connections thanks to new lubrication

A new lubrication from Dörken MKS provides a high level of corrosion protection and simultaneously enables a smooth fastening.
 
In order to prevent thread-rolling screws from corroding, it is now possible to use a coating system from Dörken MKS-Systeme GmbH & Co. KG that consists of a zinc flake basecoat and the DELTA-LUBE® 50 lubricant. The basecoat determines the corrosion characteristics and ensures cathodic corrosion protection, while the colourless lubricant brings with it the properties of the otherwise used topcoat: it further increases the corrosion protection and influences both the coefficients of friction and thread forming torque. Test results show that the coating system fulfils high corrosion protection requirements: tapped into aluminium more than 3,000 hours without any red rust, tapped into steel more than 1,000 hours (salt spray test according to ISO 9227). At the same time the system also achieves low levels of thread forming torque, thus enabling thread-rolling screws to be reliably used. If the screw needs to be coated in color, it is necessary to apply a topcoat before the lubricant. The surface protection from Dörken MKS is globally available and fulfils high quality standards.