Application fields and advantages of brown corundum sand
Brown corundum sand, also known as brown corundum or brown fused corundum, is a kind of artificial abrasive made of high-quality bauxite as the main raw material, smelted and cooled at a high temperature of more than 2000℃ in an electric arc furnace. The main component is aluminum oxide (Al₂O₃), and the content is generally above 95%. Due to its high hardness, good toughness, strong wear resistance and excellent high temperature resistance, it is widely used in many industrial fields. With the continuous improvement of material processing precision requirements, the application of brown corundum sand in abrasives, refractory materials, surface treatment, casting and functional fillers is becoming increasingly important.
1. Wide application in abrasives
Abrasives are one of the most traditional and important application fields of brown corundum. Due to its Mohs hardness of up to 9.0, second only to diamond and silicon carbide, brown corundum is widely used in the manufacture of various abrasive products, such as grinding wheels, emery cloth, sandpaper, oilstones and grinding heads. Whether in metal processing, glass polishing or ceramic grinding, brown corundum can provide efficient cutting force and good wear resistance. Especially in industrial scenarios that require strong cutting and stable shape retention, brown corundum abrasives perform particularly well.
2. As an important raw material for refractory materials
Brown corundum has extremely high refractory temperature and excellent thermal stability, so it is widely used to manufacture various high-performance refractory products. In high-temperature industrial furnaces such as metallurgy, steel, cement, and glass, brown corundum can be used to produce high-grade refractory bricks, castables, plastics, ramming materials and other refractory products, especially for parts with severe high-temperature erosion and frequent thermal shock. Compared with traditional high-aluminum materials, brown corundum refractory materials have better slag erosion and spalling resistance, effectively extending the service life of equipment and reducing enterprise maintenance costs.
3. Application in sandblasting and surface treatment
Brown corundum sand is widely used in metal surface sandblasting because of its uniform particle size, high hardness and high specific gravity. During the sandblasting process, brown corundum can effectively remove rust, scale, old paint layer, etc. on the surface of the workpiece, and improve surface cleanliness and adhesion. At the same time, due to its good self-sharpening and not easy to passivate, it can be recycled and used many times, greatly reducing material costs. In addition, brown corundum also shows unique effects in the matte treatment and surface texture processing of materials such as stainless steel, aluminum profiles, glass, and ceramics.
4. Application in precision casting
In recent years, with the continuous development of precision casting technology, higher requirements have been put forward for the purity and thermal stability of casting materials. Brown corundum has become an ideal shell material for precision castings such as high-temperature alloys, stainless steel, and carbon steel due to its stable chemical composition, good thermal conductivity, and low thermal expansion coefficient. Brown corundum casting sand can effectively improve the surface quality of castings and reduce casting defects. It is widely used in high-end manufacturing fields such as aviation, automobiles, and energy.
5. Extended use as functional filler
Brown corundum can also be used as a functional aggregate in products such as anti-slip floors, wear-resistant pavements, resin mortars, and high-end building materials. Its excellent hardness and compressive resistance help to improve the wear resistance and service life of composite materials. In the fields of electronics, ceramics, rubber, etc., brown corundum micropowder is also often used as a filler to improve the heat resistance, thermal conductivity, and structural strength of the product.
Conclusion
Brown corundum sand plays an indispensable role in modern industry with its excellent physical properties and chemical stability. With the upgrading of material technology and industrial processing needs, the market prospect of brown corundum sand will be broader and will also bring more efficient and environmentally friendly solutions to multiple industries.
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