Christiansen, Peter2; Hattel, Jesper Henri2; Bay, Niels2; Martins, Paulo A.F.4
1 Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark2 Department of Mechanical Engineering, Technical University of Denmark3 Universidade de Lisboa4 Universidade de Lisboa
Numerical simulation and physical modeling performed on small-scale ingots made from pure lead, having a hole drilled through their centerline to mimic porosity, are utilized to characterize the deformation mechanics of a single open die forging compression stage and to identify the influence of the lower V-die angle on porosity closure and forging load requirements of large cast ingots. Results show that a lower V-die angle of 120 provides the best closure of centerline porosity without demanding the highest forging loads or developing unreasonably asymmetric shapes that may create difficulties in multi-stage open die forging procedures.
Institution of Mechanical Engineers. Proceedings. Part C: Journal of Mechanical Engineering Science, 2014, Vol 228, Issue 13, p. 2347-2356
Open die forging; V-shaped die; Porosity closure; Physical Modeling; Numerical simulation