New atomization process for metal powder

A new atomization process has been developed, which combines pressure and gas atomization. Tile melt leaves tile pressure nozzle as a hollow cone in the form of a thin film. After tile pre-filming step, the melt is atomized by a gas stream delivered by a ring nozzle. Tile objectives of this investigation arc to achieve a narrow size distribution and low specific gas consumption compared to conventional gas atomization techniques. Both lead to a higher efficiency and low costs. Tin and some alloys have been atomized successfully will this technique. The mass median diameter from different experiments are between 20 and 100 mum. Sieving analysis of the tin powder show tight particle size distributions.