Method for producing particle-shaped material
AssigneeMepura Metallpulvergesellschaft mbH
InventorsRajner Walter, Martin Walcher
Life of this patent
Estimating the term…
Abstract
A method for producing particle shaped material from a melt. The method comprises the following steps: the material is melted, the material melt is intimately mixed with a gas in a predetermined ratio; the gas-liquid mixture is suddenly expanded and the material powder thus produced is collected, which the other gas is added to according to a predetermined air/liquid ratio during the expansion with solidification of the formed material drop, to form a material powder having a controlled size distribution and shape in an area of lower pressure than the gas/liquid mixture.
Claims7
A method for producing metal particles from molten metal comprising:
- mixing in a chamber molten metal with gas in a predefined ratio to obtain a hot gas/melt mixture having a ratio of gas to melt of 0.5-15 kg/kg, wherein the chamber is provided with an outlet nozzle for the hot gas/melt mixture;
- and
- ejecting the hot gas/metal melt mixture by pressure through the outlet nozzle while adding further gas under pressure at the outlet nozzle to the hot gas/melt mixture leading to a particle velocity of 50-100 m/sec to obtain fine liquid droplets which solidify while cooling to form particles of a controlled size distribution and shape, whereas the size distribution is controlled by variation of the gas/melt ratio.
Dependencies are inferred from the claim text.