Refractory coatings are applied to sand moulds and cores in foundries (steel castings, grey cast iron and ductile iron, and non-ferrous metals).
Refractory coatings provide a protective barrier between the molten metal and the mould or core substrate during the casting process, ensuring the integrity of the cast surface and preventing defects, such as segregations, burnt-in sand, bulges/recesses and other.
They reduce the thermal shock caused by sand substrate and reactions between the substrate and melt, strengthen the mould surface and give smooth surface of castings.
Different applying processes can be used for our coatings – dipping, spraying, pouring and applying with brush – providing flexible use in production processes specific to individual foundries. Efficient coating must provide the following features:
NAME | BASIC COMPOSITION | PURPOSE | |||||
SPHEROIDAL GRAPHITE CAST IRON | LAMELLAR GRAPHITE CAST IRON | COPPER CASTS | ALUMINIUM CASTS | STEEL CASTINGS | MANGANESE STEEL | ||
AQUADUR CPX | graphite | ✓ | ✓ | ✓ | ✓ | ||
AQUADUR ZP | zircon | ✓ | ✓ | ✓ | ✓ | ✓ | |
AQUADUR ZG | zircon, graphite | ✓ | ✓ | ✓ | ✓ |
NAME | BASIC COMPOSITION | USAGE | |||||
SPHEROIDAL GRAPHITE CAST IRON | LAMELLAR GRAPHITE CAST IRON | COPPER CASTS | ALUMINIUM CASTS | STEEL CASTINGS | MANGANESE STEEL | ||
EXO COATING BBE | graphite, silicate | ✓ | ✓ | ✓ | ✓ | ||
EXO COATING ZBBE | zircon | ✓ | ✓ | ✓ | |||
EXO COATING ZBBE/G | zircon, graphite | ✓ | ✓ | ✓ | ✓ | ||
EXO COATING ABBE | alumina | ✓ | ✓ | ✓ | ✓ | ✓ | |
Exosol MO | magnesite | ✓ | ✓ | ||||
EXO EP-02 | zircon, olivine | ✓ | ✓ |
NAME | BASIC COMPOSITION silicate binder |
VEZIVO MX -R, -7, -11, -15 |
With the additive for decomposition after casting |
VEZIVO M | Without decomposition additive |
BETASIL 10 | With the additive for decomposition after casting |
NAME | BASIC COMPOSITION | USAGE |
EXO DILUENT for alchocol-based coatings | Alchocol diluent | EXO COATING DILUENT can be used for the following coatings: EXO COATING ZBBP, ZBBE, BBE, ZBBE/G, ZG 3V, L25 ORANGE, L EXOSOL MO |
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NAME | BASIC COMPOSITION | USAGE |
ALUTIL MOP 417 | Mineral oil based petroleum coating | Die casting of zinc and aluminum alloys for hot tools |
ALUTIL AMF | Water concentrate based on colloidal graphite and additives | Intended for coating molds for casting Al, Mg, Zn and Cu alloys. For cold tools |
ALUTIL MOP 461 | Petroleum coating | Die casting of zinc and aluminium alloys |
NAME | USAGE |
TEXOL A | BENTONITE FORMS |
LOČILEC GS/C | CRONING PROCESS |
NAME | BASIC COMPOSITION | USAGE |
KITEX-C | CO2, croning, cold-box and hot-box | Kit for repairing sand moulds and cores |
POPEX | CO2, croning, cold-box, hot-box and bentonite forms | Adhesive for moulds and cores |