By applying MM31 directly after a mechanical pre-treatment, the two worlds come together. This results in a clean, ready to coat surface and a quality improvement of the coated substrate on both corrosion protection and paint adhesion properties. This is the result of forming of a conversion layer. The product also offers protection against flash rust and undercreep corrosion, allowing an extended storage time of up to 48 hours.
Conversion layer, chromium-3 basis
MM31 creates a chromium-3 based protective conversion layer, which is formed on the metal by a chemical reaction with MM31, whereby the metal itself contributes to the formation of the layer. This layer provides a more uniform metal surface.