Precise polishing material white fused alumina micropowder

Precise polishing material white fused alumina micropowder

Why is white fused alumina micropowder 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 fused alumina micropowder 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 fused alumina powder, with its ultra-high hardness, sharp cutting edge, excellent chemical and thermal stability, high purity, and controllable particle size, has become an ideal abrasive for polishing high-hardness, high-precision, and high-cleanliness sealing elements such as floating oil seals. It can efficiently remove material while minimizing surface damage and contamination risks, ultimately helping floating oil seal rings achieve the perfect effect necessary for superior sealing performance.

• Description for white fused alumina powder:

White fused alumina micropowder is produced from high-quality aluminum oxide powder, refined and crystallized through electric arc smelting. And it features high purity, excellent self-sharpening properties, resistance to acid and alkali corrosion, high-temperature stability, and stable thermal performance. It is slightly harder than brown fused alumina but less tough. With strong grinding capabilities, low heat generation, and high efficiency, it is suitable for making abrasive tools used for grinding high-carbon steel, high-speed steel, and stainless steel. Fine-grit abrasives can also be used in precision casting and high-grade refractory materials.