Atomized Aluminium Powder:
Aluminium powder is produced by presenting pure molten aluminium metal to a compressed gas jet and converting it to fine droplets, which are then solidified and collected. Powders so collected are subsequently graded, depending on size, specification and application. The range of particle sizes of the product made in this way can be controlled to some extent by varying the nozzle opening, the air pressure and other factors. A wide range of particle size is available from the finest, 5 microns up to 1000 microns. The characteristic that differentiates aluminium powder from aluminium in the massive form is the very large surface area to weight ratio.
The production of aluminium metal from the oxide requires considerable energy. The reverse reaction, the oxidation of fine aluminium powder, is exothermic and, because of the large surface area, the reaction occurs rapidly. Consequently aluminium powder is used in explosives, both in peaceful and also military applications. Aluminium powder combined with oxygen is used in rocket launching. Other uses include hot-tops in the steel and iron foundry industry, de-oxidising of steel and production of aluminium chemicals. An increasing usage of aluminium powder is in powder metallurgy. It has led to more highly developed powder-making processes and a much wider range of subsequent fabricating techniques. Rapid solidification technology, metal matrix composites and mechanical alloying, for example, combined with powder extrusion, rolling and forging are presenting opportunities for creating new alloys and forms of material.
These have tailor-made properties which are more attractive for the aerospace, automobile and other industries. The energy involved in many of the uses of aluminium powder, particularly for explosives and rocketry, illustrates the potentially hazardous nature of this product which needs to be addressed during production, storage and usage.
The production of aluminium metal from the oxide requires considerable energy. The reverse reaction, the oxidation of fine aluminium powder, is exothermic and, because of the large surface area, the reaction occurs rapidly. Consequently aluminium powder is used in explosives, both in peaceful and also military applications. Aluminium powder combined with oxygen is used in rocket launching. Other uses include hot-tops in the steel and iron foundry industry, de-oxidising of steel and production of aluminium chemicals. An increasing usage of aluminium powder is in powder metallurgy. It has led to more highly developed powder-making processes and a much wider range of subsequent fabricating techniques. Rapid solidification technology, metal matrix composites and mechanical alloying, for example, combined with powder extrusion, rolling and forging are presenting opportunities for creating new alloys and forms of material.
These have tailor-made properties which are more attractive for the aerospace, automobile and other industries. The energy involved in many of the uses of aluminium powder, particularly for explosives and rocketry, illustrates the potentially hazardous nature of this product which needs to be addressed during production, storage and usage.
HT - Atomized Aluminium Powder
| Sr. no. | Grade | METAL PURITY( % ) MIN | FREE AL PURITY ( % ) MIN | SIEVE ANALYSIS | APPLICATION |
|---|---|---|---|---|---|
| 1 | HTMP[ 1030 | 99.5 | 98 | ( -10 BSS --- 95%(MIN) | FERRO ALLOYS / FOUNDRY/CHEMICAL |
| (+ 30 BSS --> 60%(MIN) | |||||
| 2 | HTMP[ 3060 | 99.5 | 98 | (-30BSS --> 90%(MIN) | FERROALLOYS / ALUMINOT HERMIC WELDING / Foundry Chemical |
| (+100BSS --> 95%(MIN) | |||||
| 3 | HTMP[ 3080 | 99.5 | 98 | (-30BSS --> 90%(MIN) | FERROALLOYS / ALUMINO THERMIC WELDING / Foundry chemicals |
| (+ 150BSS --> 95%(MIN) | |||||
| 4 | HTMP UNSF | 99.5 | 98 | ( - 100 BSS------ 95 % MIN ) | SLURRY EXPLOSIVES / AMMUNITION / REFRACTORIES / Foundry chemicals |
| ( - 200 BSS------ 70 % MIN ) | |||||
| 5 | HTMP SF 150 | 99.5 | 98 | (- 300BSS --> 50%(MIN) | Pesticide / SPECIALITY EXPLOSIVES / REFRACTORIES |
| 6 | HTMP SF 200 | 99.5 | 98 | ( - 300 BSS------ 80 % MIN ) | SPECIALITY REFRACTORIES |
| 7 | HTMP DU | 99.5 | 98 | ( - 300 BSS------ 90 % MIN ) | SPECIALITY EXPLOSIVES / REFRACTORIES |