Die, Roller

A die that has two pairs of rollers, a ver­tical pair with an oval groove to form an oval shape, followed by rolling to a round shape with a horizontal pair. Ideally, they offer lower power consumption, higher drawing speed, reduction in inter­mediate annealing and cleaning, improved wire properties and elimination of expen­sive lubricants. However, they take longer to set up, cannot be used for finishing passes and the shape of the oval groove is critical to ensure that the wire does not turn over and that it will be round after the next rolling.