FIELD: technological processes; metallurgy.
SUBSTANCE: invention relates to the treatment of metals by pressure and can be used in the manufacture of bulky ball plugs having a spherical shape with a central cylindrical bore. Stamp contains a split banded matrix die and a cylindrical combined punch. Matrix die consists of the upper and lower semimatrixes arranged to form a cavity for placing the initial tube blank. Internal walls of the semimatrix are made with a spherical section. Spherical section on the inner wall of the lower semimatrix has a ledge providing centering of the tube blank in the matrix. Punch consists of two co-axially arranged parts. Contact area of the external part of the punch has a spherical section with a ledge similar to the shoulder of the lower semimatrix.
EFFECT: as a result, the productivity of the process of making stoppers and the quality of the products obtained is increased.
6 cl, 1 dwg
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