WHITE ALUMINA OXIDE FOR BONDED ABRASIVES
White aluminum oxide also called white fused alumina,white
corundum, WA, etc., is a kindly of artificial corundum, HS code:
2818109000
It is made of industrial alumina powder as main raw material,
fusing and purifying in a electric arc furnace at high temperature
of over 2200°c, and then shaped into different grain size through
process of crystal, crushing, magnetic separation, air cleaning,
and screening.
Main chemical composition is Al2O3 99% Min.
The texture is dense, the hardness is high, and the granules are
formed into sharp corners, which are suitable for the manufacture
of vitrified and resin bonded abrasives.
White aluminum oxide can be divided into different grades:
By application:
- F sand for Bonded Abrasives
- P sand for coated Abrasives
By Additional treatment:
- Calcined white aluminum oxide,
- Coated white aluminum oxide
| CHEMCIAL ANALYSIS |
| AL 2 O 3 | SiO2 | Fe 2 O 3 | Na 2 O | L.O.I |
| 99.3% Min. | 0.1% Max. | 0.1% Max. | 0.35% Max. | 0.2% Max. |
| PHYSICAL PROPERTIES |
| Color | Crystal Form | True Specific Gravity | Vickers Hardness | Mohs Harness |
| White | Trigonal Crystal | 3.95g/cm3 | 2200kg /mm2 | 9 |
| SIZES AVAILABLE |
| #12 MESH | #16 MESH | #20 MESH | #24 MESH | #30 MESH |
| #36 MESH | #46 MESH | #54 MESH | #60 MESH | #70 MESH |
| #80 MESH | #90 MESH | #100 MESH | #120 MESH | #150 MESH |
| #180 MESH | #200 MESH | #220 MESH | #240 MESH | #280 MESH |
| #320 | #360 | #400 | #500 | #600 |
| #800 | #1000 | #1200 | #1600 | |
FEATURES IN SANDBLASTING
White aluminum oxide, also called white corundum, is hard and
brittle, strong cutting force, good chemical stability, and good
insulation.
White aluminum oxide grit size is consistent and cuts much faster
than other sand blasting media, leaving a smoother surface.
It is suitable for processing hardened steel, alloy steel, high
speed steel, high carbon steel and other materials with hard
hardness and high tensile strength.
| Abrasive | Hardness | Toughness | Materials suitable for grinding
| Features |
| Brown Aluminum Oxide | High | High | grinding metals with high tensile strength, such as carbon steel,
alloy steel, malleable cast iron, hard bronze, etc. | It has good grinding performance. Often used for rough grinding
with large margin and widely used.
|
| White Aluminum Oxide | Higher | Little Lower | precision hardened steel, high carbon steel, high speed steel and
ground thin-walled parts. | When grinding, the abrasive particles are easily broken, so the
grinding heat is small. |
Caroline Cui
