The longer the service life of the dies in the wire drawing line, the better the system availability and productivity. Companies that can reduce the wear on the drawing die and extend the lifetime of their wire production through optimum drawing processes, are able to produce more economically and thereby gain an advantage in the market. Coating agents help to achieve precisely that: They even out the irregularities on the wire surface, make the wire drawing process more stable and enable higher drawing speeds.
The pre-coatings for wire drawing are for the most part comprised of sulphates, borates, silicates and other salts, as well as polymers. To use them, the powders are dissolved in hot water at approx. 80-90°C. They create a stable layer on the wire surface which provides basic lubrication and helps lead the lubricant through. Coating agents are generally used in dry drawing processes.