- Energy-saving refractory material white corundum 1-3mm3-5mm
- White corundum is made of high-quality aluminum oxide powder, which is refined and crystallized by electric melting. It has high purity, good self-sharpening, acid and alkali corrosion resistance, high temperature resistance, and stable thermal performance. Its hardness is slightly higher than brown corundum, and its toughness is slightly higher. Low, strong grinding ability, low calorific value, high efficiency. It can be used to make abrasive tools, suitable for grinding high-carbon steel, high-speed steel and stainless steel and other fine-grained abrasives; it can also be used for precision casting and advanced refractory materials.
- Physical and chemical indicators:
physical properties Chemical composition content(%) crystal 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 Mohs hardness 9 Linear expansion coefficient 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 - Performance and advantages of white corundum sandblasting abrasive grain size sand:
- 1. Does not affect the color of the workpiece;
- 2. It can be used for sandblasting in the process where iron powder residue is strictly prohibited;
- 3. Micro-powder grade is very suitable for wet sandblasting and polishing operations;
- 4. Fast processing speed and high quality;
- 5. The amount of iron oxide contained is extremely low, suitable for sandblasting operations where iron residues are strictly prohibited;
- 6. After pickling step to remove.
- It is suitable for surface beautification treatment of various high-end products, crafts or hardware products. After sandblasting, the surface is white without any impurities, eliminating the trouble of cleaning. Fine white corundum can be used as an option for polishing and grinding, and can also be used as an additive for various products.
- 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, painting Rebirth.
- 2. Beautification processing: all kinds of gold, K gold jewelry, matte or matte treatment of precious metal products, matte processing of crystal, glass, corrugated, acrylic and other non-metallic surfaces, and can make the surface of processed objects into a metallic luster.
- 3. Etching processing: jade, crystal, agate, semi-precious stones, seals, elegant stones, antiques, marble tombstones, ceramics, wood, bamboo etc.
- 4. Pre-treatment processing: Teflon (TEFLON), PU, rubber, plastic coating, rubber roller (ROLLER), electroplating, metal spray welding, titanium plating and other pre-treatments to increase surface adhesion.
- 5. Burr processing: removal of burrs from bakelite, plastic, zinc, aluminum die-casting products, electronic parts, magnetic cores, etc. Force eliminates processing.
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