White corundum 4000 mesh 6000 mesh 8000 mesh 10000 mesh polishing alumina
- White corundum is made of high-quality aluminum oxide powder as raw material, crystallized by electromelting, high purity, good self-sharpening, acid and alkali corrosion resistance, high temperature resistance, stable thermal performance, it is slightly harder than brown corundum, slightly lower toughness, strong grinding ability, small calorific value, high efficiency. It can be made into an abrasive, which can be applied to grinding fine-grained abrasives such as high carbon steel, high speed steel and stainless steel; It can also be used for precision casting and advanced refractories.
- Physical and chemical indicators:
Physical properties chemical composition Content(%) Crystalline hexagon Al2O3 ≥99.55 Main crystal: Al2O3 Color: White Na2O ≤0.3 True density ≥3.9 g/cm3 Bulk density 1.75-1.95 g/cm3 SiO2 ≤0.01 9 on the Mohs scale The coefficient of linear expansion is 8.3×10-4 Fe2O3 ≤0.03 - Product model particle size comparison table:
White corundum grain size sand White corundum powder Granularity number Particle size range (μm) Granularity number Particle size range (μm) 12 # 2000-1700 W63 63-50 16 # 1400-1180 W50 50-40 20 # 1180-1000 W40 40-28 22 # 1000-850 W28 28-20 24 # 850-710 W20 20-14 30 # 710-600 W14 14-10 36 # 600-500 W10 10-7 40 # 500-425 W7 7-5 46 # 425-355 W5 5-3.5 54 # 355-300 W3.5 3.5-2.5 60 # 300-250 W2.5 2.5-1.5 70 # 250-212 W1.5 1.5-0.5 80 # 212-180 W0.5 0.5-0.3 90 # 180-150 100 # 150-125 120 # 125-106 150 # 106-75 180 # 90-63 220 # 75-53 240 # 63-50 280 # 50-40 320 # 40-28 - White corundum sandblasting abrasive particle size sand performance and advantages:
- 1. Does not affect the color of the processed parts;
- 2. It can be used for sandblasting in the process where iron powder residues are strictly prohibited;
- 3. Micronized grade is very suitable for wet sandblasting and light polishing operations;
- 4. Fast processing speed and high quality;
- 5. The amount of iron oxide contained in it is extremely low, which is suitable for sandblasting operations where iron residues are strictly prohibited;
- 6. After pickling steps to remove.
- Suitable for all kinds of high-end products, processes or hardware and other products surface beautification treatment, after sandblasting the surface is white without any impurities, eliminating cleaning troubles. Fine white corundum can be used as a choice for polishing and grinding, and can also be used as a product additive.
- 1. Surface processing: metal oxide layer, carbide black skin, metal or non-metal surface rust removal, such as gravity die casting mold, rubber mold oxide or release agent removal, ceramic surface black spots, uranium color removal, painted rebirth.
- 2. Beautification processing: all kinds of gold, K gold jewelry, precious metal products matting or matte treatment, crystal, glass, corrugation, acrylic and other non-metallic matte processing and can make the surface of the processed object into metallic luster.
- 3. Etching processing: jade, crystal, agate, semi-precious stones, seals, elegant stones, antiques, marble tombstones, ceramics, wood, bamboo pieces, etching art.
- 4. Pre-treatment processing: Teflon, PU, rubber, plastic coating, rubber roller barrel (ROLLER), electroplating, metal spray welding, titanium plating, etc. before treatment, so that the surface adhesion increases.
- 5. Burr processing: bakelite, plastic, zinc, aluminum die-casting, electronic parts, magnetic core, etc. Force elimination processing.
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