Parameter identification of 42CrMo4 steel hot forging plastic flow behaviour using industrial upsetting presses and finite element simulations

An experimental-numerical methodology was proposed for the parameter identification of constitutive laws, when applied to hot forging. Industrial presses were directly used generate reference experiments identification. The strain and temperature heterogeneity that appears during on-press compression taken into account by an FE-based inverse method. Specific designed heat transfer friction coefficients. A testing tool instrumented with displacement sensors a force cell. This then on hydraulic press screw in order cover large range rates. identified set validated respect specialized plastometers, semi-industrial validation forging process. reasonable accuracy observed, particularly realistic conditions.