Investigation of process parameters and plate local thickening on residual stresses in hot stamping process

In this paper, local-thickened plates are adopted for aluminum alloy square cups stamping with relatively low values of residual stresses and small radius at the bottom corner. By utilizing numerical experimental methods, effects process parameters plate local thickening on stress distribution hot stamped studied. Furthermore, influence corner is also investigated. The results showed that an increase in forming temperature, blank holder force die radius, can be reduced. same effect achieved by decreasing entrance radius. As opposed to flat plates, using not only reduce cups, but decrease cups. When optimized scheme used, smaller corner, lower obtained.