White Fused Alumina Applications in Aerospace
White fused alumina (WFA) is a popular industrial abrasive for sandblasting and surface treatment. It offers high purity with Al₂O₃ ≥ 99%, Mohs hardness 9, strong self-sharpening, stable chemical properties, and low grinding heat.
In the aerospace industry, WFA mainly serves three key areas: surface treatment, part repair and remanufacturing, and casting refractories. It extends traditional abrasive use to high-end aerospace applications. Unlike some AI-generated content, White fused alumina grain is not used for thermal barrier coatings or shot peening.
Surface Cleaning and Deburring
White aluminum oxide blasting media is the most widely used abrasive for aerospace sandblasting in both production and maintenance.
It cleans hot-end parts of aircraft engines, including turbine blades, combustion chambers, valves, and pistons.
In the meantime, white aluminum oxide can quickly removes high-temperature oxide scale, rust, and burrs. It also provides proper chamfering for later coating processes.
WFA works well with high-performance aerospace materials. These include titanium alloys, nickel-based superalloys, and stainless steel.
It leaves almost no impurities. It fully meets strict aerospace cleanliness standards.
Used Parts Refurbishment and Repair
White fused alumina helps refurbish key aircraft components like engines and landing gear.
It effectively removes fatigue layers and damaged surfaces. It creates a clean base for welding, coating, and other repair work.
WFA supports non-destructive cleaning for coated parts. For example, it removes thermal barrier coatings from titanium alloy blades without damaging base materials.
White fused alumina powder performs micro-grinding on worn parts. It fixes damaged journals and sealing surfaces. It restores key dimensions to original design standards and cuts replacement costs.
White fused alumina also provides final precision finishing on repaired parts. This ensures accurate assembly, such as controlling clearances between engine rotors and stators.
Precision Casting for Engine Blades
White fused alumina sand acts as a facing sand in precision casting.
It delivers high refractoriness, stable volume, and strong slag resistance during high-temperature casting.
WFA grain and powder also works well in lost-wax casting as a surface sand.
It greatly improves dimensional accuracy and surface quality of finished blade castings.
