Abstract
The deformation of a rectangular billet between a groovd extrusion-forging mode in which the billet material is forced simultaneously into the die orifice and the flash gap. This mode of deformation is similar to the initial stages of the closed-die forging process, the understanding of such deformation process being important for both product quality control and forming tool design. In this paper, the metal flow behaviour during the extrusion forging of a rectangular billet between a grooved die and a flat die has been studied using the finite-element method with a view to extending the application to more complicated practical cases. The emphasis has been on the deformed profiles rather than on the forging load. Experiments using two sets of dies with different parameters and lead billets were performed, good agreement being found between the experimental and numerical results in terms of the deformed profiles.
Published Version
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