Supply of Abrasive Black Corundum, Black Corundum for Stainless Steel Polishing, Black Corundum for Sandblasting, Artificial Sandblasting for Rust Removal
Black corundum, also known as low-aluminum corundum, is a gray-black crystal mainly composed of α-Al2O3 and iron spinel, which is produced by smelting bauxite in an electric arc furnace. It is characterized by a relatively low Al2O3 content and a certain amount of Fe2O3 (about 10%). Therefore, it features moderate hardness, high toughness, high temperature resistance, and stable thermal performance. It is mostly used for free grinding, such as pre-plating grinding and rough grinding of products. It is mainly used for polishing and sandblasting of stainless steel, metal products, optical glass, bamboo and wood products. It is also a novel abrasive for manufacturing resin grinding wheels, cutting discs, and abrasive cloth.
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