Energy-Economizing Optimization of Magnesium Alloy Hot Stamping Process

被引:15
|
作者
Gao, Mengdi [1 ]
Wang, Qingyang [1 ]
Li, Lei [2 ]
Ma, Zhilin [1 ]
机构
[1] Suzhou Univ, Sch Mech & Elect Engn, Suzhou 234000, Peoples R China
[2] Hefei Univ Technol, Sch Mech Engn, Hefei 230000, Peoples R China
关键词
energy-economizing; hot stamping; lightweight material; magnesium alloy; process parameters; SHEET;
D O I
10.3390/pr8020186
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Reducing the mass of vehicles is an effective way to improve energy efficiency and mileage. Therefore, hot stamping is developed to manufacture lightweight materials used for vehicle production, such as magnesium and aluminum alloys. However, in comparison with traditional cold stamping, hot stamping is a high-energy-consumption process, because it requires heating sheet materials to a certain temperature before forming. Moreover, the process parameters of hot stamping considerably influence the product forming quality and energy consumption. In this work, the energy-economizing indices of hot stamping are established with multiobjective consideration of energy consumption and product forming quality to find a pathway by which to obtain optimal hot stamping process parameters. An energy consumption index is quantified by the developed models, and forming quality indices are calculated using a finite element model. Response surface models between the process parameters and energy-economizing indices are established by combining the Latin hypercube design and response surface methodology. The multiobjective problem is solved using a multiobjective genetic algorithm (NSGA-II) to obtain the Pareto frontier. ZK60 magnesium alloy hot stamping is applied as a case study to obtain an optimal combination of parameters, and compromise solutions are compared through stamping trials and numerical simulations. The obtained results may be used for guiding process optimization regarding energy saving and the method of manufacturing parameters selection.
引用
收藏
页数:17
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