In the field of casting, the application of white fused alumina as a surface sand is of great significance. Surface sand is a coating used on the surface of a mold or mold core during the casting process to improve the quality of the casting surface, reduce defects, and ultimately achieve a high-quality casting.
A surface layer of sand is formed by mixing white fused alumina particles with an appropriate binder, which is then applied to the surface of the mold or mold core. During the casting process, molten metal or alloy interacts with the surface sand to improve the surface quality of the casting. Therefore, the application of white corundum in surface sand helps to ensure high quality, high precision and high reliability in the casting process. White corundum
White fused alumina is an ideal component of high-quality surface sand due to its high hardness, abrasion resistance and chemical stability. The application of white corundum particles in surface sand can achieve multiple benefits:
1.Surface purification. Casting metals or alloys may introduce impurities, and the high hardness of white corundum particles can effectively scrape these impurities off the surface of the mold, reducing the contamination of the surface of the casting.
2.Defect reduction aspects. White fused alumina surface sand fills the tiny bumps on the mold surface, reduces the formation of porosity and surface defects, and improves the integrity of the casting.
3.In terms of surface quality improvement. The use of surface sand can form a smooth, fine texture on the surface of the casting, improving the appearance and texture of the casting.
4.In terms of thermal stability. During the casting process, white fused alumina particles are able to withstand high-temperature shocks and thermal cycling, maintaining stable properties.
A surface layer of sand is formed by mixing white fused alumina particles with an appropriate binder, which is then applied to the surface of the mold or mold core. During the casting process, molten metal or alloy interacts with the surface sand to improve the surface quality of the casting.
Therefore, the application of white corundum in surface sand helps to ensure high quality, high precision and high reliability in the casting process. White corundum