Improve Casting Surface Quality
White fused alumina is widely used in the foundry industry because it can effectively improve the surface finish of castings. With high hardness, excellent wear resistance, and stable chemical properties, white fused alumina helps reduce surface defects, sand adhesion, and roughness during the casting process. It also improves shell strength and dimensional accuracy, making it suitable for precision casting applications.
In recent years, many manufacturers in Europe and America have gradually reduced the use of zirconium silicate and started using white fused alumina as a shell material. Compared with zircon materials, white fused alumina provides more stable quality and reliable performance under high-temperature conditions, helping produce smoother and cleaner casting surfaces.
High Purity And Refractory Performance
The quality of white fused alumina mainly depends on its purity. Common impurities include SiO2, Fe2O3, and TiO2. Lower impurity content and higher Al2O3 content usually indicate better quality, stronger durability, and improved refractory performance.
Besides abrasive applications, white fused alumina is also widely used as a refractory material because of its high melting point and thermal stability. However, excessive impurities may reduce its resistance to high temperatures and affect service life. Therefore, high-purity white fused alumina is an ideal choice for foundry and refractory industries.
