FEM-Simulation of Long Term Die Heating during High-Frequency Incremental Hot Forging Processes

摘要

Incremental forging processes like radial forging become more and more crucial in industry due to their outstanding economic performance, their high flexibility and their advantageous stress states. However, FEM simulation, nowadays a basic method to analyze forging processes, is still a very time consuming procedure and needs complex models to implement incremental processes. Especially long term studies with focus on tool temperature development during several hours of production can not be performed with classical FEM models for radial forging. The main problem in modeling is the high operating frequency of the forging devices, which leads to inacceptable calculation time due to numerous simulations that have to be run to complete a cogging process sequence. In the present work a simplified FEM model for investigation of die heating during cogging is demonstrated. The success of the approach has been verified by metallographic studies proving the accuracy of the solution