METHOD OF SPHERICAL POWDER FROM INTERMETALLIC ALLOY PRODUCTION Russian patent published in 2017 - IPC B22F9/10 

FIELD: technological processes.

SUBSTANCE: invention relates to production of spherical powder from intermetallic alloy. Method involves melting of cylindrical billet end from intermetallic alloy rotating about horizontal axis in spraying chamber with plasma jet arc plasmatron with enabling centrifugal spraying of melted particles and their hardening at flight in working gases medium, wherein hot working gases mixture is taken from spraying chamber, cooled down and cooled working gases mixture is supplied into spraying chamber enabling fused particles cooling, wherein hardened particles are collected in receiving bin. Cooled down working gases mixture is supplied into spraying chamber with controlled intensity and orientation by means of cooling flows formers, made in form of at least two different diameters axial sprayers, ensuring outgoing from sprayers cooling flows overlapping to make cooling zone of melted particles with controlled temperature gradient.

EFFECT: lower temperature in spraying chamber to required values, increased particles cooling rate control efficiency.

1 cl, 1 dwg