Experimental and Simulation Study to Reduce Required Bending Force in Air Bending Die by Using Annealing and Rectangular Hole

Sheet metal is widely used in industry and different production processes. The present work aims to reduce the bending force air-die process. Different mild steel sheet thicknesses (0.5, 0.75, 1, 1.25 mm) were considered, two techniques proposed. first technique involves an annealing process, while second one considers cutting a rectangular hole along line. stress was calculated using Autodesk inventor software. results revealed that process can provide significant ductility improvement hence reduction, time important factor influences development. Moreover, line could consequently force. study also reported increasing thickness beyond specific value result reduction instead of increase, which attributed temperature increase tool.