FIELD: metal processing.
SUBSTANCE: invention relates to metal forming, namely to methods of manufacturing hollow axisymmetric detail by rotational extrusion with wall thinning of workpiece from hard-to-deform multiphase alloy in furnace. Workpiece is mounted on mandrel, mandrel is brought together with workpiece into rotation and local shaping of workpiece by compression on mandrel in direction of forming workpiece using single roller. In doing so, roller is used, width of which is selected considering outer diameter of cylindrical blank or the largest cross section of conical blank, coefficient that affects resistance polar moment value of specified cross-sections of cylindrical blank or conical blank in section, coefficient of sliding friction between materials of roller and workpiece at room temperature.
EFFECT: detail quality is improved by eliminating metal influx before roller.
1 cl, 2 dwg
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