White corundum (WFA) powder is a high-quality, high-purity synthetic abrasive made from aluminum oxide, also known as aluminum oxide (Al2O3). It is produced by melting calcined alumina at high temperatures in an electric arc furnace, then cooling and pulverizing the molten material into different particle sizes. White corundum powder has the characteristics of high hardness, excellent self-sharpening property and low toughness. It is chemically stable and has excellent thermal properties, making it a popular choice for a variety of applications in the abrasives and refractory industries.
The uses and properties of white fused alumina powder:
Abrasive applications
WFA powder is widely used in abrasive products, including bonded abrasives such as grinding wheels and cutting wheels, as well as coated abrasives such as sandpaper and emery cloth. Its high hardness and self-sharpening properties make it ideal for grinding, polishing and cutting a variety of materials, including metal, wood, glass, ceramics and plastics.
Blasting media
White fused alumina powder can also be used as a blasting media for cleaning, deburring and surface preparation. Its high hardness combined with its ability to break into sharp particles allows it to effectively remove rust, paint and other surface contaminants without excessive material removal or damage to the underlying substrate.
Refractory materials
WFA powder is an important raw material for the production of high-quality refractory products such as bricks, castables, and refractory cement. Its high alumina content, combined with excellent thermal stability, low thermal expansion and high load softening temperature, makes it suitable for high temperature applications including furnaces, kilns and incinerators.
Ceramics
White fused alumina powder can be used as raw material for the production of advanced ceramics, such as spark plugs, electrical insulators, wear-resistant components, etc. Its high purity and fine particle size make it suitable for applications requiring precision and high-performance properties.
Surface treatment
WFA powders can be used in grinding and polishing processes to achieve high-quality, precision surfaces on a variety of materials, including metals, glass and ceramics.
Overall, White fused alumina powder has become an essential material in many industries due to its high hardness, excellent grinding properties, and excellent thermal and chemical stability. Its versatility allows it to be used in a wide range of applications, from abrasive products and refractory materials to advanced ceramics and surface finishing processes.
