APPARATUS FOR PLASTIC METAL WORKING Russian patent published in 2002 - IPC

FIELD: equipment for plastic working of metals, namely apparatuses for strengthening metal at working process. SUBSTANCE: method comprises steps of placing blank into receiving vertical duct of die; applying pressure to blank for deforming it through intermediate duct parallel relative to receiving duct. Symmetry axes of both parallel ducts are mutually spaced by predetermined distance. Symmetry axes of parallel ducts and symmetry axis of intermediate duct are mutually inclined by angle equal to 90-120 degrees; cross section area of outlet duct consists (0.9-1) of cross section area of receiving duct. At deforming process direction of metal yielding of blank changes two times, that is why shear deformation and material strengthening are occurred. EFFECT: increased factor of metal use, lowered labor consumption at plastic working of metallic blanks. 2 cl, 1 dwg