FIELD: metallurgy.
SUBSTANCE: in a device containing a puncheon, a cone, a support ring, extension-type sectors, a matrix, an elastic element located between the extension-type sectors and the matrix; the extension-type sectors have different conical surfaces. The inner surface has an inclination angle of a generatrix that is larger than an external one.
EFFECT: improving the quality of parts without their faceting per a pass of a press; reducing labour input.
2 dwg
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