کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
798861 | 1466780 | 2007 | 9 صفحه PDF | دانلود رایگان |
Molybdenum, one of the refractory metals, has high heat and electrical conductivity while remaining strong, mechanically, at high, as well as low, temperatures. Therefore, it is a technologically very useful material, especially for high temperature applications. However, due to its very low drawability, a multi-stage process is necessary to make a deep drawn part from the molybdenum sheet. In this study, a multi-stage circular cup deep drawing process for a molybdenum sheet was designed by including ironing, which was effective in increasing drawability. A parametric study by finite element analysis of deep drawing was conducted to evaluate the effect of die design variables. From parametric study results, the design variables of the multi-stage deep drawing process were selected. Then, nonlinear process optimization, based on finite element simulation, was conducted to obtain the optimum multi-stage deep drawing process, using a global, as well as a local, optimum search algorithm.
Journal: Journal of Materials Processing Technology - Volume 184, Issues 1–3, 12 April 2007, Pages 354–362