Description
This paper investigates the effects of high-carbon steel wire dies with different approach zone shapes. It has been found that the highest number of twists and cycles to failure during rotational beam fatigue testing were achieved with wire drawn in sigmoidal or concave dies. These dies also decreased longitudinal residual stresses at the wire surface and improved surface roughness. It was also found that they achieved more homogeneous distribution of microhardness on wire cross sections than conical dies.
