What is white corundum?

White corundum, also known as white aluminum oxide, is a highly versatile and widely used abrasive material. Its main features are high hardness, durability, excellent cutting performance, and grinding performance. In this article, we will explore its characteristics, applications, production process, and key considerations for its use.

• Understanding White Corundum

  Definition and Composition White corundum is a form of corundum, which is an aluminum oxide mineral (Al2O3). It belongs to the corundum family, which also includes other color varieties, such as ruby (red corundum) and sapphire (blue corundum). The white color of this abrasive is primarily due to its high purity and minimal impurities.

• Properties and Characteristics of White Corundum

  High Hardness and Abrasive Strength The exceptional hardness of white corundum makes it ideal for various abrasive applications. It is capable of effectively grinding and cutting through hard materials, including metals, ceramics, and composites. It can also be used in chemical systems as various reaction vessels or mechanical components, and even various molds can use white corundum as a material. High Purity and Low Impurity Content White corundum is valued for its high purity level, with minimal impurities present. This purity enhances its abrasive performance, ensuring clean and precise results without introducing contaminants or discoloration. Brittleness and cold cutting ability White corundum is highly brittle, with sharp and angular particles that enable efficient cutting and grinding. Therefore, it is commonly used for precision grinding of high-speed steel, cutting tools, and internal cylindrical grinding wheels. Excellent Heat Resistance White corundum exhibits exceptional heat resistance, making it suitable for high-temperature applications. It can withstand elevated temperatures during grinding or cutting processes without significant loss in performance or structural integrity. Chemical Stability White corundum has excellent chemical stability, making it resistant to acids, alkalis, and other corrosive substances. This stability contributes to its longevity and reliability in various industrial applications.

• Applications of White Corundum

  Grinding and Polishing White corundum is extensively used in grinding and polishing applications across diverse industries. It is employed for precision grinding of metals, ceramics, glass, and other hard materials. Additionally, it is utilized for surface polishing to achieve desired finishes and smoothness. Coated and Bonded Abrasives White corundum serves as a key ingredient in coated abrasives, such as sandpaper and abrasive belts. It is also utilized in the production of bonded abrasives, including grinding wheels, mounted points, and sharpening stones. Refractories and Ceramics Owing to its high heat resistance, white corundum finds applications in refractory products and ceramics. It is used for manufacturing crucibles, kiln furniture, furnace linings, and other components that require excellent thermal stability. Blasting and Shot Peening White corundum is employed in abrasive blasting and shot peening processes to clean, deburr, and prepare surfaces. Its sharp and angular grains facilitate efficient removal of rust, scale, old coatings, and contaminants.

• Conclusion

  White corundum, with its remarkable hardness, purity, and abrasive properties, is a versatile materialthat finds extensive use in various industries. Its high hardness, low impurity content, and sharp grain structure make it an excellent choice for grinding, cutting, and polishing applications. Whether it is precision grinding or fine finishing of material surfaces, white fused alumina provides consistent and reliable processing performance due to its stable chemical properties. Its heat resistance allows it to remain stable even under high temperature conditions.