White fused alundum/fused al2o3 WFA for precision polishing of steel pipes

Introduce

INTRODUCE

White fused alundum/fused al2o3 WFA for precision polishing of steel pipes belongs to electro-corundum. It is also be called white aluminum oxide, white corundum or white fused aluminum oxide. White fused alumina is obtained from the fusion of high purity calcined alumina in electric arc furnaces. Compared with brown fused alumina, white fused alumina is characterized with high alumina purity, high hardness, chemical stability, high melting point, and large crystal size. It is widely used in coated and bonded abrasives, polishing, precision casting, sandblasting and refractory raw materials.

Chemical Analysis

Al2o3	99.2%min
SiO2	0.02%max
Fe2O3	0.1%max
Na2O	0.35%max

Physical Properties:

Crystal System	Trigonal system
Mohs Hardness	≥9
True Density	≥3.5
Specific gravity	Approx. 3,9 5 g/m³
Bulk density (Dependent on grain size)	Approx. 1.75-1.95 g/m³

Applications

•Precision grinding of of steel pipes
•oil stone

•Grinding, lapping and polishing medium
• Coated and bonded abrasives grain materials
• Precision casting
• Refractory raw materials
• Ware-resistance
• Road surface preparation

Available Grain Size

SIZE	DO	D3	D50	D94
1000#	≤32	≤27	11.5±1.0	≥7
1200#	≤27	≤23	9.5±0.8	≥5.5
1500#	≤23	≤20	8±0.6	≥4.5
2000#	≤19	≤17	6.7±0.6	≥4.0
2500#	≤16	≤14	5.5±0.5	≥3.0
3000#	≤13	≤11	4.0±0.5	≥2.0
4000#	≤11	≤8	3.0±0.4	≥1.8
6000#	≤8	≤5	2.0±0.4	≥0.8
8000#	≤6	≤3.5	1.2±0.3	≥0.6