White corundum (also known as white bauxite, aluminum corundum, bauxite) is a high-purity bauxite mineral whose chemical composition is mainly aluminum oxide(Al₂O₃). Due to its high hardness, good wear resistance, strong chemical stability and other characteristics, white corundum is widely used in industry in fields such as sandblasting (sand treatment).
1. Selection of sandblasting materials: White corundum is a commonly used sandblasting material due to its high hardness (Mohs hardness 9), relatively uniform particles and strong cutting force. Its hardness enables it to effectively remove pollutants, rust, oxide layer, old paint, etc. when it comes into contact with the surface of the workpiece, while not causing excessive damage to the workpiece.
2. Specific application areas of sandblasting:
Metal surface treatment: White corundum is widely used in sandblasting of metal materials such as steel, aluminum, and copper. It can remove oxides, rust, dirt, etc. on the metal surface, and can also form a rough texture on the metal surface to improve the adhesion of subsequent coatings.
Casting cleaning: During the casting production process, white corundum can effectively clean the excess impurities on the surface of cast iron, aluminum castings, etc., and remove sand holes, burrs and oxide scales during the casting process.
Cleaning glass, ceramics and stone: Sandblasting is also commonly used for the surface treatment of glass, ceramics and stone. White corundum can be used to remove surface contaminants, or for frosting to create different surface effects (such as frosted glass).
Anti-corrosion treatment: For some metal parts that need to be treated with anti-corrosion (such as pipes, bridges, etc.), white corundum can clean the surface after sandblasting and provide a good foundation for the adhesion of anti-corrosion coatings.
Fine processing and precision cleaning: White corundum is suitable for some high-precision and high-demand sandblasting cleaning operations, especially in industries that require a flat and smooth surface.
High hardness: It can remove rust, stains, oil stains, etc. on the metal surface, and will not damage the workpiece surface due to excessive wear.
Chemical stability: It is not easy to react with the workpiece surface, which can effectively prevent chemical pollution during sandblasting.
High temperature resistance: White corundum can maintain stable physical properties at high temperatures and is suitable for applications in some high temperature environments.
4. Selection of white corundum during sandblasting: The effect of sandblasting is affected by factors such as particle size, shape and sandblasting pressure. White corundum particles usually have different particle sizes, and users can choose the appropriate particle size according to different processing requirements. For example, coarser particles are suitable for rough surface treatment, while finer particles are suitable for fine cleaning.
SummaryDue to its excellent hardness and wear resistance, white corundum has become one of the important materials in sandblasting. Whether it is the surface treatment of metal, ceramic or stone, it can provide efficient and precise cleaning effects, so it has been widely used in many industrial fields.
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