Numerical Simulation of Forming of Heat-Resistant 1.4922 Steel

摘要

This paper describes the production of heat-resistant 1.4922 steel and the challenges in open-die forging of this material. It presents a numerical simulation of forging an 8K-type ingot into a stepped bar. The numerical simulation should lead to finding optimum forming conditions, using tracking of points selected in the initial ingot to their final positions in the forging. The final product contains defects. By tracking paths of points associated with them throughout the forming process, it should be possible to identify their initial locations within the ingot. At the beginning of the simulation, the points were set along the axis of the top and bottom of the ingot and on the surface of the anticipated cone of sedimentation within the ingot. The simulation should lead to optimization of the forming process and to adapting the initial stock in such a way, as to either completely eliminate the defects or to ensure that they are forced outside the final product shape by the forging process.