On the die design in AA6082 porthole extrusion

Porthole die extrusion is commonly used to manufacture hollow profiles made of lightweight alloys for numerous industrial applications. It is mainly based on the property of some alloys to weld at a solid state under proper conditions. In this study, an experimental campaign was designed to investigate the role of the process parameters affecting the process load and welding quality. The specimens were manufactured and tested measuring their strength. Finally, a 3D numerical simulation was performed in order to investigate the capability to predict the joint quality using a welding criterion.