Mollitia AV is a special additive for core sands, which contains inorganic and organic polymers. Recommended especially for cold-box technology.
Mollitia AV is designed to eliminate or significantly reduce the formation of casting defects – including „veins”, resulting from the thermal expansion of the sand. Addition of Mollitia AV reduces the effort and time spent on cleaning of castings and reduce the amount of foundry scrapers (failed castings). Amount needed for making sand core is from 0.3 to 0.5 parts by weight on moulding sand, depending on the needs. Mollitia AV is in the form of a fine powder, but due to its small addition, only slightly reduced strength parameters of sand core by 10- 15%, but will avoid the formation of surface defects on the casting. In many cases, the use Mollitia AV makes it possible to manufacture cores without the need for protective coating.