Abstract
In order to lessen the worsened formability, failures and fractures occurring in the cold stamping process, the hot stamping technology was adopted in the forming of DP steel engine dumping plank. The simulation technology of finite element method was also used to forecast the forming defects in the stamping process of the DP steel engine dumping plank. In the paper, the forming limit, the influences of stamping gaps and the influences of different blank holder force on the stamping part were analyzed by using eta/DYNAFORM software. Meanwhile, the thickness changes and the materials flow conditions of the DP plank during the hot stamping process were also analyzed. Through the experimental analysis, the result of the finite element numerical simulation complied very well with that of actual production results. The research results show that duplex steel plate can meet the performance requirements of car engine dumping plank forming, which offers theory basis for the production of similar parts.
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