High‑Purity Calcined Alumina Polishing Powder is alpha‑phase alumina powder produced from high‑grade aluminium hydroxide via high‑temperature calcination, ultrafine grinding and multi‑stage air classification. Featuring controlled particle hardness, sharp‑edged micro‑crystal morphology and low impurity content, this mineral powder can be used as fine abrasive in polishing compounds. Meanwhile, it acts as rigid reinforcing filler within coating systems to improve surface hardness and anti‑abrasio

Product Detail

Product DetailsThis high‑purity calcined alumina polishing powder is manufactured through high‑temperature calcination to form stable alpha‑alumina crystals. Strict calcination temperature control regulates crystal growth and grain hardness. Subsequent multi‑step ultrafine milling and air‑classification operations remove oversized grit particles and coarse aggregates. Rigorous screening minimizes oversized grains that would cause deep scratches on finished surfaces during polishing processes.

The product exhibits high Mohs hardness, excellent chemical inertness, high whiteness and low heavy‑metal impurities. The well‑defined micro‑crystalline grains provide consistent cutting performance during mechanical polishing. When formulated into polishing compounds, polishing pastes and polishing slurries, it delivers uniform micro‑abrasion action for precision surface finishing of stainless‑steel, hard alloy, glass and advanced ceramic workpieces. It helps to remove surface burrs, oxide layers and minor surface defects, achieving smooth, fine‑finished surfaces.

When incorporated into solvent‑based, water‑based or solvent‑free industrial wear coatings, the rigid alumina grains disperse evenly throughout the coating film matrix. After curing, these hard mineral particles construct a rigid anti‑abrasion network inside the coating layer. It significantly improves surface scratch resistance, friction resistance and service lifespan of the protective wear coating. It also contributes to good mechanical strength and stable hardness of cured coating films without severely impairing coating leveling performance under proper loading dosage.

Typical application fields cover metal polishing paste, buffing compounds, precision ceramic polishing slurry, heavy‑duty industrial wear‑resistant coatings, anti‑scratch primer and topcoat formulations for machinery components. This grade is dedicated for industrial abrasive and coating usage.

Packaging specification is 25 kg moisture‑proof woven bags with inner polyethylene liner. All packages must remain tightly sealed in storage and transit to avoid dust contamination and moisture absorption. Store inside cool and dry warehouse environment. Avoid excessive stacking height on pallets to prevent bag rupture and powder caking. Operators shall wear dust‑proof masks and protective gloves during powder handling.

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High-Purity Calcined Alumina Polishing Powder CAS 1344-28-1, Fine Al2O3 Abrasive for Polishing Compounds and Wear Coatings

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.