Refractory coatings

Refractory coatings are applied to moulds and cores to smooth the porous moulding surface. Finely milled refractory materials are used as core components in such coatings. The coating layer insulates the substrate and protects it against thermal stress caused by the molten metal. ILARDUYA, with Hüttenes-Albertus technology, has a vast refractory coatings offer for any application. Marketed coatings match the required application system (brush, dump, spray, dip) and are delivered as concentrates (paste) or diluted fulfiling the client's requirements. Different solvents, such as water or isopropanol, may be used depending on the refractory materials composition. In this respect, the continuous evolution of moulding sand binders needs a parallel adaptation of refractory coatings to cope with changing situations and demands, which is made possible by the use of new raw materials that are unceasingly tested and adapted. Our products offer covers the following items:

• Zircolite: Zirconium (ZrSiO₄)-based coating for mass iron and steel casting.
• Koldur: Alcohol-based graphite coating for iron jobbing.
• Arkopal: Aluminium silicate-based aqueous coating for the automotive industry.
• Arkofix and Koalid: Alcohol-based coatings for the automotive industry.
• Arkofluid: Alcohol-based coating for high quality nodular iron casting.
• Magnefluid: Magnesite alcoholic coating for manganese steel casting.
• Disopast: Water-based coating for polyestirene moulds.