Zhengzhou Zhengtong Abrasive Import&Export Co.,Ltd
Zhengzhou Zhengtong Abrasive Import&Export Co., Ltd is exporter of blasting media ceramic beads, brown fused alumina, black fused alumina, white fused alumina & grinding media zirconia beads,
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BROWN ALUMINUM OXIDE FOR SANDBLASTING
Brown aluminum oxide, also called Brown Fused Alumina is the most widely used medium density fused brown aluminum oxide (alumina) abrasive. It has good hardness and toughness and self-sharpness, is good sandblasting media.
By Al2O3 content, There are
A grade Brown aluminum oxide Al2O3 95%
A- Grade Brown aluminum oxide Al2O3 92%
B grade Brown aluminum oxide Al2O3 85%
By smelting production type:
There are
Tilting furnace Brown aluminum oxide, fixed furnace Brown aluminum oxide
By crushing production type
There are
Barmac crushing type brown fused alumina
Rolling crushing type brown fused alumina
Milling crushing type brown fused alumina
| Application
| Specification | Chemical Index % | Magnetic material% | ||||
| Al2O3 | Fe2O3 | SiO2 | TiO2 | ||||
| Bonded abrasives &sandblasting | F | 4#—80# | ≥95.5 | ≤0.2 | ≤1.2 | ≤3.0 | ≤0.05 |
| 90#—150# | ≥94.5 | ≤0.03 | |||||
| 180#—220# | ≥93.5 | ≤0.3 | ≤1.5 | ≤3.5 | ≤0.02 | ||
| Physical Index | |||||
| Color | Crystal Form | True Specific Gravity | Bulk Density | Vickers Hardness | Mohs Hardness |
| Brown | Trigonal Crystal | 3.97g/cm3 | 1.64-1.99g/cm3 | 2100kg /mm2 | 9 |
Pre-processing sandblast:
Teflon, PU, rubber, plastic coating, rubber roller (ROLLER), electroplating, metal spray welding, titanium plating, etc., to increase the surface adhesion.
Surface pretreatment generally has three methods, pickling, phosphating, and sand blasting.
Sandblasting is the most thorough, versatile, quickest and most efficient cleaning method and has been able to replace pickling and phosphating in many ways.
Sandblasting can be arbitrarily chosen between different roughnesses, but other processes can't achieve this. Manual sanding can produce a matte surface but the speed is too slow. Chemical solvent cleaning will clean the surface too smooth and not suitable for coating bonding. .
Applicable equipment
Suction dry sand blasting machine
Press-in dry blasting machine
Caroline Cui