Abstract
In the study of cold-drawing SAE 1020 steel rod various amounts up to a true reduction in area of 0.76, several properties were obtained such as hardness, torsion, and tension. Residual stresses were measured and the microstructure was examined. The effect of the amount of reduction and the direction of drawing per pass (defined as sequence in drawing) on the various properties was determined. Some exploratory work was conducted on the influence of prior cold work and fatigue-stressing on the brittle transition temperature. Effects of size, machining, and time after cold work upon the tension and torsion properties were observed. Cold-drawing is compared with cold-rolling. Part 2 consists of studies in cold-drawing 2S-O aluminum, while Part 3 discusses some measurements on the coefficient of friction.
