Friction in aluminium extrusion—part 2: A review of friction models for aluminium extrusion

This paper presents a review of recent development of the friction models for aluminium extrusion processes. The friction models used in aluminium extrusion can be classified as three categories: classic friction models, empirical friction models and physically based friction models. A comparative study of the friction models for the bearing channel of hot aluminium extrusion dies was conducted and in the current testing conditions, full sticking friction appeared to represent the interfacial contact between the hot aluminium and the die the best.