The production of powders and granules by centrifugal atomisation is carried out in sealed chambers. Chambers of large diameter (up to 12m) are required when producing large drops, to avoid splatting on impact with the walls. These are expensive to build and can also raise costs of purging gases such as nitrogen or argon. However, experiments show that chamber diameters can sometimes be reduced without deformation or breakage of the particles. Probably with a sufficiently thick frozen shell on the drops, the collision of particle and wall does not deform or destroy the drop. We present a theoretical and experimental study of the interaction of droplets with the wall. A mathematical model of the process of cooling and impact is presented. Correlations linking the degree of deformation of the droplet with its diameter, velocity, thickness of the frozen shell, the strength characteristics of the metal and other characteristic are also presented. These allow us to estimate the degree of deformation of the metal droplets on impact with the wall.
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