Dörken MKS Provides Optimum Screw Connections Thanks to Delta-Lube 50 Lubricant

In order to prevent screws from corroding, it is now possible to use a coating system from Dörken MKS that consists of a zinc-flake base coat and the Delta-Lube 50 lubricant.

The company says the base coat determines the corrosion characteristics and ensures cathodic corrosion protection, which means that, in the event of damage to the coating, the less noble zinc in the base coat sacrifices itself on contact with water and oxygen in favor of the more noble steel base material.

The Delta-Lube 50 colorless lubricant brings with it the properties of a topcoat, but it also increases the corrosion protection and influences both the coefficients of friction and thread-forming torque. Dörken MKS says that test results show that the coating system fulfills high corrosion protection requirements, including tapped into aluminium more than 3,000 hours without any red rust and tapped into steel more than 1,000 hours salt spray test,according to ASTM B117.

The company says the coating 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.