Rolled rod or wire subjected to plastic deformation by flexure - then turned to obtain bright steel, so no pickling is required

摘要

Bright steel is made from rolled wire, where the wire is first calibrated to size by creating an oval cross-section, then rolling to form a round cross-section. The wire or rod is next subjected to flexure, applying about three times the stress arising in a straightening machine, so the wire is subjected to plastic deformation above its elastic limit and a symmetrical stress distribution is obtd. over its cross-section. After flexure, the wire is turned to remove the surface layer and obtain the required dia., and is then straightened. The flexure releases internal stresses.