METHOD AND APPARATUS FOR PRODUCING METAL POWDER BY CENTRIFUGAL SPRAYING Russian patent published in 2018 - IPC B22F9/10 

FIELD: technological processes.

SUBSTANCE: invention relates to the production of a metal powder by the centrifugal spraying of workpiece. Method includes feeding the workpiece into a rotating spray assembly and into a melting zone, melting the workpiece with a plasma jet directed to its end, with the provision of centrifugal spraying by rotating the spray assembly and obtaining particles, cooling and solidifying them during flight in the gas. Spraying assembly is used, which is in the form of a hollow cylinder for feeding workpieces through it and consisting of two sections of various materials, first of which is a working section and is made of a workpiece material, and the second is made of a material cooled with higher thermal conductive properties than the material of the first section. Feeding of workpiece to the spraying unit is carried out with the alignment in the vertical plane of the end face of workpiece and the end of the working section of the spraying unit, firstly, the ends of the workpiece and the working part of the spraying unit are heated and melted together with the plasma jet to ensure the formation of a stable profile and stationary melt film at the end of the working part.

EFFECT: improves the quality of the powder and increases the life of the equipment used.

2 cl, 2 dwg, 1 tbl