Versatile coatings that prevent metal penetration and improve surface finish of castings. Suitable for a wide range of mould and core applications.
Discover the advantages of our premium foundry coatings
Refractory coatings, also known as foundry coatings, protective paints, blackings, and washes, are essential components in metal casting processes. These liquid formulations consist of high-temperature mineral or refractory materials suspended in a liquid carrier. Designed to withstand the extreme conditions of molten metal, they form a protective barrier between the hot metal and the core or mold.
When applied to a surface, the liquid carrier vaporizes, leaving behind a robust refractory layer. This layer serves multiple critical functions:
The primary function of refractory coatings is to protect surfaces from casting defects and other forms of damage. These coatings are essential in foundry operations for several key reasons:
Forms a protective barrier against molten metal penetration and thermal shock, preventing casting defects and surface imperfections.
Facilitates easier cleaning of castings by preventing metal penetration into sand molds, reducing post-casting cleaning time and costs.
Helps repair surface imperfections in sand molds and cores, ensuring smoother casting surfaces and reducing scrap rates.
Lowers overall production costs by extending mold life, reducing material waste, and minimizing rework requirements.
Industry Standard: The use of refractory coatings is considered a standard procedure in foundry operations worldwide, with the specific formulation chosen based on economic considerations and the specific requirements of each casting application.
Ensures optimal performance and reduces defects
Withstands temperatures from 1,750°C to 1,800°C
Resistant to chemical reactions at high temperatures
Increases recoverable sand, enhancing recyclability
Decreases fettling time and cost, easier knockout from molding
Simple to apply on molds and cores