METHOD OF MAKING POWDERS OF ALUMINIUM AND ITS ALLOYS Russian patent published in 1995 - IPC

FIELD: powder metallurgy. SUBSTANCE: method comprises steps of charging pig aluminium in a melting furnace, feeding the metal, had been melt and heated up to 720 C, at first by ejection and then by action of an electromagnetic field to a jet and dispersing it at output of a nozzle by compressed gas; providing an efficiency of the process, equal to 990 kg/hour and yeilding of a fraction 50 micrometers, equal to 89% determining a flowrate of the gas at dispersing with use of a formula Q_g>Q_o(1+N), where Q_g-gas flowrate at dispersing the melt by action of the electromagnetic field (m³/h); Q_o-gas flowrate at dispersing the melt without action of the electromagnetic field, (m³/h); N nominal phase current of an inductor, quota of nominal value. EFFECT: enhanced efficiency and high intensity of dispersing process. 1 cl, 1 dwg, 1 tbl