1.Brown corundum abrasives It is widely used in the components of reaction vessels, pipelines and chemical pumps due to its high hardness, high strength and good wear resistance; It is used as a mechanical component and various grinding tools in the mechanical industry. wire drawing die, pencil lead mold extrusion nozzle, etc.; Making tools, bulletproof materials, mold abrasives, body joints and sealing mold rings.
2, Brown corundum abrasive as thermal insulation materials, such as corundum hollow balls, fiber products and corundum lightweight bricks, has been widely used in the furnace roof and furnace wall of high-temperature furnaces, not only high temperature resistance, but also heat preservation.
3, Brown corundum abrasive due to its high temperature resistance, corrosion resistance, high strength and other properties, sliding nozzle is used to process precious metals, special alloys, ceramics and iron blast furnace lining (wall and tube). Physicochemical containers, spark plugs, heat- and anti-oxidation coatings, etc
In terms of color, it is best to distinguish the color of brown molten alumina. It is usually dark purple and purple. Under the sun, the transparency is high. It is translucent and shiny. This brown corundum usually has slightly higher hardness and better wear resistance. High and high in iron. The larger the brown molten alumina particles, the darker the color. Generally, brown corundum abrasives have good self-sharpening and good toughness. The less material with strong magnetic absorption, the better the quality. The grade and quality of brown corundum abrasives can be identified from the color.
2, shape and size to distinguish shape and size, good brown corundum depends on its original mineral amount. In general, good main minerals are mainly spherical small particles with small particle size, strong impact resistance and smooth and shiny surface.
3, from the content of alumina to distinguish the content of brown corundum There are three grades, the first to third quality gradually weakened, the quality of brown corundum mainly depends on the content of AL2O3.Brown molten aluminaThe grade is greater than 95% AL2O3, so it is often referred to as the 95th brown molten alumina. The AL2O3 content of second- and tertiary brown corundum gradually decreased, and the quality also decreased.
