NUMERICAL SIMULATION OF THE HOT FORGING OF POROUS PREFORMS IN A DIE WITH AN INTERNAL FLASH GUTTER

摘要

The hot forging of porous preforms with an axial hole in a semiclosed die with an internal flash gutter is numerically simulated. The distribution of deformation and density over the cross-section of the preform is substantially different at separate stages of the process. The maximum axial and radial strains are observed near the flash gutter. Enlarging the compensation slot over the optimum size causes residual porosity in some areas of the forging.