DIE SET FOR EQUAL-DUCT ANGULAR PRESSING Russian patent published in 2006 - IPC B21C25/00 B21J13/02 

FIELD: plastic working of metals, namely production of nano-crystalline materials with improved degree of mechanical properties.

SUBSTANCE: die set includes deforming unit with inlet and outlet ducts of the same rectangular cross section and ram. In first variant of invention deforming unit is in the form of two parts with crossing planes. Crossing planes of first part having grooves are connected with crossing planes of second part. Inlet and outlet ducts are restricted by said grooves and partially by crossing planes of second part. In second variant of invention deforming unit is in the form of two plates and two other parts. Thickness of each plate is equal to dimension of side of rectangular cross section of inlet and outlet ducts; each plate has two crossing planes. Said plates are mutually joined by means of two other parts according to condition of arrangement of two crossing planes of first plate opposite to two crossing planes of second plate. Inlet and outlet ducts are restricted by means of two crossing planes of first plate, two crossing planes of second plate and partially by planes of other parts.

EFFECT: enhanced operational reliability of die set, improved quality of formed product.

5 cl, 9 dwg, 1 ex