METHOD OF TRILATERAL DIE-ROLLED SECTION PROFILE APPLICATION ON HIGH-STRENGTH REINFORCING WIRE SURFACE Russian patent published in 2013 - IPC B21C1/00 

FIELD: process engineering.

SUBSTANCE: proposed comprises drawing of round billet and application of trilateral die-rolled section thereon. Production of reinforcing wire for prestressed concrete structures with cross-section approximating to circle is ensured by drawing round billet at total reduction of 55-61% before application of die-rolled section. Said section is applied by shaping the round biller cross-section to arrow-like triangle by plain rolls with concave working surface in radius making at least 5 radii of said round billet. Then, periodic dents are applied on arrow-like triangle by shaping rolls at total reduction of 5-8%. Note here that spacing between axles of sets of plain rolls and those of shaping rolls making 0.6-0.7 of their diameter.

EFFECT: higher precision of shape and sizes of reinforcing wire.

3 dwg, 1 ex