Analysis of the factors influencing the geometrical shape of workpieces produced by ironing

The paper consists of an analysis of the subsequent ironing of cups that had been produced by deep-drawing without a blankholder. On the basis of the theory of elasto-plasticity, a computer-aided model of ironing has been built, which considers the main influences on the outer and inner diameter of the workpieces, these influences including the stiffness of the tool. the forming and material properties of the workpiece material, the magnitude of the strain, the magnitude of the superposed force, the influence of heating and others. A comparison is made between the theoretical and experimental deviations of the cross sections of the heated workpiece on the punch, after removing it from the punch and allowing it to cool.