INFLUENCE OF MODE PARAMETERS AND DESIGN OF THE EJECTION NOZZLE ON CHARACTERISTICS OF HIGHLY DISPERSED ALUMINUM POWDER. PART 2. INFLUENCE OF THE NOZZLE DESIGN

The influence of the design of an ejection nozzle on characteristics of highly dispersed aluminum powder in industrial conditions at the LLC «SUAL-PM» enterprise is performed. Measurements of dispersed characteristics of the spray product when spraying the aluminum melt by the ejection nozzle are performed for six variants of modified nozzles. The results of determining the median diameter of particles (d ) and content of a highly dispersed phase (z) (with the particle diameter no larger than 10 μm) in the spray product are presented. It is shown that the most efficient method of modifying the spray nozzle is profiling the cone part of a protective bush and imposition of ultrasonic vibrations on a nozzle case (a decrease in d m  by ~31,6 % and an increase in z by ~8,5 %).

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