Why is white corundum ultrafine powder added to precision grinding materials (grinding discs, polishing discs, optical fiber grinding oil, fiber drawing polishing liquid)?
White corundum (WA): The “universal sharp blade” for precision grinding Core components:
High-purity α-Al₂O₃ (>98.5%)
1. Core performance advantages Balance of hardness and toughness: Mohs hardness 9.0, microhardness 2200-2400 kg/mm
². The toughness is far superior to silicon carbide, and the grinding particles are less likely to break completely, making it suitable for withstanding high cutting forces.
High purity, low pollution: Impurities (such as Fe₂O₃) < 0.1%. During grinding, it does not contaminate the workpiece, especially suitable for scenarios with high requirements for surface cleanliness such as stainless steel, high-speed steel, etc.
Stable self-sharpening: Wear in a micro-fracturing manner, continuously generating new cutting edges, ensuring stable grinding force and high surface finish (Ra can reach 0.02 μm). Low heat generation: During grinding, heat generation is relatively low, and it is less likely to cause the workpiece to anneal, deform or burn.
2. Reasons for choosing white corundum powder for precision grinding
Specifically for high-hardness and high-toughness metal materials (quenched steel, high-speed steel, alloy steel, tool steel, stainless steel).
Adaptability of toughness: When grinding tough materials (such as steel), the impact force is large, and the high toughness of white corundum can prevent the grinding particles from breaking prematurely and falling off.
Surface quality: Sharp and stable cutting, capable of obtaining ultra-fine, scratch-free, and non-pitted precision surfaces. Versatility: Can be used from rough grinding to ultra-precision grinding, honing, polishing, etc., with extremely high cost-effectiveness.
White corundum polishing solution:
