Investment casting involves melting solid metal into a liquid state and pouring it into a mold to form a specific shape, which then solidifies. During the melting process, impurities in the slag must be removed from the molten iron.
Chromite foundry sand, with its main chemical component Cr2O3, boasts thermal stability, high thermal conductivity, and excellent resistance to alkali slag.
Glass beads, produced from crushed glass and flat glass materials, are processed into spherical shapes through high-temperature melting.
White fused alumina is produced from high-quality aluminum oxide powder, refined and crystallized through electric arc smelting.
Pink aluminum oxide or ruby aluminum oxide is made by aluminum oxide powder, which is electrically fused at high-temperature by adding appropriate amount of chromium oxide, etc.