FIELD: cold die forging of rod-type fastening members with heads of different shape and volume. SUBSTANCE: cylindrical blank is shaped between punch and reducing die at simultaneous formation of its rod portion and head. Radial metal yielding of head and shape of said head are set due to change of contact friction or configuration of punch in such a way that specific reduction effort is equal to specific upsetting effort of head. EFFECT: enhanced conditions of plastic metal yielding, enlarged manufacturing possibilities, high quality of members with head. 1 dwg
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