Elongation-control rolling of H-shaped wire

Abstract

The authors propose a technique for size-free rolling, termed elongation-control rolling. This technique is characterized by the active use of interstand forces, which being not only tensile but also compressive, are varied over a wide range. In the present study, H-shaped wires are formed from round wires by elongation-control rolling with grooved rolls. The elongation, i.e. nominal strain in the rolling direction, is controlled over a wide range, from 20% to 80%, where 50% is tension-free rolling. The flange width increases with compressive interstand force, and decreases with tensile force. It is concluded that the rolling of H-shaped wires having an arbitrary flange width is made possible.