Aiming at the quality defect problems of stamping forming of metal anode plates for small wind-cooled fuel cell stacks,Auto-form software was used to simulate and analyze the stamping forming process of bipolar plates,and the effects of blank holder force,stam-ping velocity,die clearance and friction factor on forming quality were studied.The maximum thinning rate and springback were taken as the optimization objectives to carry out the orthogonal tests,and it is found that the blank holder force is the most influential factor on forming quality,while the effect of stamping velocity on forming quality is the smallest.Based on this,the optimal process parameter com-bination was determined:blank holder force of 80 kN,stamping velocity of 400 mm·s-1,die clearance of 0.15 mm and friction factor of 0.15.The results show that the maximum springback is 1.487 mm after optimization,and it is reduced by 1.416 mm compared with that before optimization.Finally,based on Autoform software,surface springback compensation was performed on the bipolar plates.It is found that the maximum springback is reduced by 41.2％after springback compensation.The reliability of simulation was verified by test.
关键词
金属双极板/冲压成形/正交试验/数值仿真/回弹
Key words
metal bipolar plate/stamping forming/orthogonal test/numerical simulation/springback
维普
万方数据