FIELD: technological processes.
SUBSTANCE: invention relates to metal forming by pressure and can be used in producing of long-axis items such as a rod with thickening. Incoming billet with smaller diameter than outer diameter of the thickening is used. Initially, thickening is formed by putting metal to the end of the incoming billet by the action of die punch in the cavity between the working ends of the punch and removable hub. Hub is placed in the body of the die coaxially with die block, with protruding of the end of the incoming billet over working end of the hub and fixed until the shaping of thickening is ended. Then the hub is released the brake and the rod is formed by extruding the metal of the remaining part of incoming billet into a hole of the die while simultaneously affecting to the incoming billet of the punch and the hub.
EFFECT: as a result, improved the quality of obtained items and the stability of used tool.
1 cl, 1 dwg
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