Improving the flexural rigidity of cold-finished steel

Abstract

The influence of reduction on the distribution of axial, tangential, and radial residual stress over the cross section of cold-finished steel rods is experimentally studied. Computer modeling of the flexural rigidity of the rods indicates that, with 5–34% reduction, which is the range used in practice, the rigidity of the metal may be almost doubled. It is inexpedient to increase the rigidity of the rods by additional slight reduction, since that would lower the residual tensile stress.