DEVICE FOR PLASTIC STRUCTURE FORMATION OF METALS Russian patent published in 2015 - IPC B21C23/00 

FIELD: metallurgy.

SUBSTANCE: device includes a metal die with crossing orifices of an equal cross section and a puncheon. Reduction of friction forces between a workpiece being deformed and orifices of the die, improvement of the ductility of the workpiece material before it enters a plastic deformation zone is provided due to the fact that the cross section outline of the die orifices is larger than that of the workpiece being deformed; the puncheon is made in the form of a hydraulic cylinder piston rod , the head of which is hydraulically connected to a liquid lubricant source; with that, the cross section outline of the piston rod is not more than the cross section outline of the workpiece being deformed; the hydraulic cylinder is provided with a bottom part into the hole of which the piston rod is installed. In the bottom part there is an annular slot enclosing the rod, in which there concentrically and in series installed is a thermal element, a ring made from a material having a shape memory effect and an elastic sealing element rigidly attached to the ring and having a possibility of contact to the rod. An annular gasket is installed between end faces of the die and the hydraulic cylinder.

EFFECT: strengthening of metals during processing.

2 cl, 2 dwg