White aluminum oxide, chemically known as alumina (aluminum oxide (Al2O3) content over 99%), is a type of artificial abrasive that appears as uniform, small particles of white sand or powder, with a slight amount of dust. White fused alumina is made from high-quality aluminum oxide powder, smelted in an electric arc at temperatures exceeding 2000°C, and then cooled.
01 Characteristics of white aluminum oxide
1. Uniform particle size ensures a smooth cut surface, excellent cutting performance, and high speed during hydraulic cutting.
2. High particle purity and minimal impurities create a favorable cutting environment.
3. High quality minimizes wear on components and reduces costs.
02 Advantages of white aluminum oxide products
1. Does not affect the color of the workpiece.
2. Can be used for sandblasting in processes where iron powder residue is strictly prohibited; micronized powder grades are ideal for wet sandblasting and lapping operations.
3. High processing speed and high quality.
4. Contains very low levels of iron oxide, making it suitable for sandblasting operations where iron residue is strictly prohibited.
5. Acid-washed to remove impurities.
03 The difference between white aluminum oxide and brown aluminum oxide
The raw materials for brown aluminum oxide are bauxite, anthracite, and iron ore. White aluminum oxide, on the other hand, is made from alumina powder.
1. Different Applications:
Brown aluminum oxide can be used to manufacture ceramic and resin-bonded abrasives, as well as for grinding, polishing, sandblasting, and precision casting. It can also be used to manufacture high-grade refractory materials. White fused alumina is suitable for grinding fine-grained abrasives such as high-carbon steel, high-speed steel, and stainless steel. It can also be used in precision casting and high-grade refractory materials.
2. Different Properties:
Brown aluminum oxide features high purity, good crystallization, strong fluidity, low linear expansion coefficient, and corrosion resistance. White fused alumina also features high purity, excellent self-sharpening properties, acid and alkali corrosion resistance, high temperature resistance, and stable thermal properties. In comparison, white fused alumina is harder than brown fused alumina.
3. Different Composition:
Although both brown and white aluminum oxide contain alumina, the alumina content of white fused alumina is over 99%, while that of brown fused alumina is approximately 95%. 4. Different users: White fused alumina is used by some high-end users because it has better cutting force and polishing effect. It is mostly used for carbon steel, alloy steel, malleable cast iron, hard bronze, etc., while brown fused alumina is commonly used in the market and has a relatively large consumption in the market. It is mostly used for tempered steel, high-speed steel, high carbon steel, etc.
