FIELD: plastic metal working, possibly manufacture of sensing members of pickup devices, radio- and videosystems, in baking and milk procession, in medical technique. SUBSTANCE: blank subjected to upsetting and subsequent rolling out is in the form of regular pyramid placed in die cavity in such a way that it is possible to shift its deformation zone from pyramid apex by distance equal to 2/3 of pyramid height. EFFECT: possibility of formation in blank material three-dimensional blocks with ferromagnetic structure-information properties due to creation of plastic microlevel deformation. 2 dwg
