Brown fused alumina grinding wheels are annular abrasive tools primarily composed of brown fused alumina as the main abrasive material. Leveraging the high hardness, excellent toughness, and superior grinding efficiency of brown fused alumina, they are widely used for grinding and polishing various materials such as metals, stone, and ceramics. These wheels efficiently remove excess material from workpiece surfaces, improve surface roughness, and lay a solid foundation for subsequent processing or final product use, making them an indispensable grinding tool in industrial production.
Core Material: The primary abrasive in brown fused alumina grinding wheels is brown fused alumina, which is produced by high-temperature smelting in an electric arc furnace using bauxite, coke (or anthracite coal), and iron filings as the main raw materials. Brown fused alumina exhibits high hardness (Mohs hardness 9.0), second only to diamond and silicon carbide, enabling it to effortlessly handle various hard materials during grinding. Additionally, it possesses excellent toughness, resists fracturing, and maintains prolonged grinding performance.
Bonding Agents: Typically, materials such as resin, ceramic, or rubber are used. Resin-bonded brown fused alumina grinding wheels offer high strength and elasticity, making them suitable for grinding curved and complex-shaped workpieces. Ceramic-bonded wheels feature high-temperature resistance and superior wear resistance, ideal for high-speed and heavy-duty grinding. Rubber-bonded wheels provide high grinding precision and excellent surface finish, often employed for fine polishing.
Structure of Broussonetia Papyrifera: Brown fused alumina grinding wheels adopt a ring-shaped Broussonetia papyrifera structure, consisting of an abrasive layer and a base. The abrasive layer is uniformly distributed on the outer circumferential surface of the base, with abrasive particles firmly bonded together by the bonding agent. The base is typically made of metal, fiber cloth, or plastic, serving to support and secure the abrasive layer, ensuring shape stability and resistance to deformation during high-speed rotational grinding.
High Grinding Efficiency: Brown fused alumina abrasives exhibit high hardness and strong cutting capability, enabling brown fused alumina grinding wheels to rapidly remove material from workpiece surfaces during grinding, significantly enhancing grinding efficiency. Compared to conventional abrasive wheels, the grinding speed can be increased by [X]%, effectively reducing processing time and improving production efficiency.
Excellent Wear Resistance: Brown fused alumina possesses superior toughness and wear resistance, ensuring minimal abrasive grain breakage or detachment during grinding, thereby extending the service life of the grinding wheel. Under identical working conditions, the lifespan of brown fused alumina grinding wheels can exceed that of conventional wheels by [X] times or more, reducing replacement frequency and lowering production costs.
High Grinding Precision: The uniform distribution of abrasive grains and
strong bonding of the matrix in brown fused alumina grinding wheels ensure stable grinding processes, guaranteeing workpiece precision. They enable precise control over workpiece dimensions and shapes, meeting diverse machining accuracy requirements, and are particularly suitable for high-precision component processing.
Wide Applicability: Brown fused alumina grinding wheels are suitable for grinding various materials, including carbon steel, alloy steel, cast iron, copper, aluminum, and other metals, as well as non-metallic materials such as marble, granite, and ceramics. They deliver excellent grinding performance in rough grinding, semi-finishing, and precision grinding applications.
Cost-Effectiveness: Brown fused alumina is sourced abundantly and is relatively low-cost. Coupled with the high grinding efficiency and extended service life of brown fused alumina grinding wheels, their overall operational cost is low, offering high cost-effectiveness and delivering significant economic benefits to enterprises.