Tabular Alumina Powder: A Versatile Refractory Material
Black fused alumina powder, as one of the important abrasives in the industry, is widely noted for its unique properties and diverse application scenarios. This article will explore in depth the characteristics, uses, and applications of black fused alumina powder in different fields to help you fully understand the advantages of this abrasive.
Black fused alumina powder is an abrasive material made from high-alumina bauxite and high-iron bauxite melted in an electric arc furnace. High-alumina bauxite is mainly the leftover material from the smelting of brown fused alumina, while high-iron bauxite consists mainly of iron oxide and alumina ore. Due to its low energy consumption and low carbon emissions during production, black fused alumina powder has a lower production cost. Its unique properties make it outstanding in grinding and polishing.
The advantages of black fused alumina powder include its microcrystalline state of alumina particles, which can maintain low grinding heat during the milling process and are less likely to cause burns to the workpiece. Moreover, black fused alumina powder has moderate hardness and good self-sharpening properties, which allows it to provide uniform and consistent surface effects in various grinding and polishing applications.
Free Grinding and Polishing
Black fused alumina powder is widely used in free grinding areas, especially excelling in the base polishing before electroplating of metal parts and the treatment of aluminum products. Its grit sand and micro-powder have significant advantages in the grinding and polishing of stainless steel workpieces, providing uniform and consistent surface effects. Additionally, black fused alumina powder is also often used for polishing and sandblasting treatment of lamps, plastics, and hardware tools.
Resin Grinding Tools and Cutting Discs
In the production of resin grinding tools, the mixing of black fused alumina powder with brown fused alumina can significantly improve the sharpness and quality of cutting and angle grinding discs. The addition of black fused alumina powder enhances the effect of the cut and polished surfaces while reducing production costs and improving cost performance. Moreover, black fused alumina powder is widely used in the manufacture of resin grinding wheels and coated abrasives.
Anti-slip Road Pavement
Black fused alumina powder grit performs excellently in laying wear-resistant and anti-slip road surfaces. Using a resin binder to adhere black fused alumina grit to concrete substrates forms roads with excellent wear resistance and anti-slip performance, making it an ideal choice in coal mine storage and road construction.
Black fused alumina powder has particular advantages in stainless steel polishing. Its fine grit performs excellently in sandblasting and polishing various workpieces, particularly in the surface treatment of stainless steel, where it can significantly reduce burn marks and make the surface of the workpiece uniform and consistent in color. Compared to other abrasives like brown fused alumina and white fused alumina, black fused alumina powder can effectively avoid color difference issues and enhance the visual effect of the product.
In addition, the compound use of black fused alumina powder with other high-hardness abrasives can significantly enhance the performance of abrasive tools. By mixing black fused alumina powder with brown fused alumina, calcined brown fused alumina, single crystal aluminum oxide, silicon carbide, and other highly durable abrasives, more effective and cost-efficient polishing wheels and sanding belts can be made.
