Research On Process Optimization Of Magnesium Alloy Seat Frame Based On MASIP

China has abundant magnesium reserves,and the output of magnesium ore accounts for more than 80% of the world.However,the traditional research and development method of magnesium alloy usually adopts the "trial and error method",which greatly hinders the speed of magnesium alloy and its structural parts from research and development to application.With the rapid development of information technology,the application of computer technology in the R & D and production of magnesium alloy and its structural parts can greatly improve the R & D and production efficiency.Based on the Integrated Computational Materials Engineering(ICME)idea proposed by the United States in 2008,this paper relies on the "Magnesium Alloy Simulation Integrated Platform(MASIP)" developed by our research group.Through the combination of computer language and Windows batch processor,the foundry process optimization integrated calculation process is constructed,and the data transfer between software and the automatic operation of the process optimization process are realized.In this paper,based on the Python scripting language,through the Pro CAST secondary development interface,a parametric simulation calculation process for the high-pressure die casting process of the magnesium alloy seat frame is constructed.Through several scripts,the pre-processing and post-processing of high-pressure die casting for seat frame were realized,and the temperature field,shrinkage porosity distribution and the deformation of magnesium alloy seat frame during filling and solidification process were simulated.And thus laid a foundation for the integrated calculation of the magnesium alloy seat frame high pressure die casting process based on the "Magnesium Alloy Simulation Integrated Platform".Based on MASIP and the parameterized simulation process of magnesium alloy seat frame,combined with MATLAB and windows batch processor,the integrated calculation of magnesium alloy seat frame die casting process optimization task was realized.Taking the front box pouring temperature of the die casting process,the die preheating temperature,and the casting-mold heat transfer coefficient as the process optimization variables,and the grain size as the target variable,combined with the microstructure-mechanical properties model and optimization algorithm,the whole process of the high pressure die casting process microstructure mechanical properties of the magnesium alloy seat frame was optimized automatically.Combined with the analysis of the solidification defects of the seat frame,the optimization of the die-casting process parameters and the prediction of the mechanical properties of the seat frame are completed.Compared with traditional optimization methods,the integrated calculation of process optimization based on MASIP greatly reduces the solving time of process optimization tasks,improves the development efficiency of magnesium alloy structural parts,shortens the development cycle.It is of great significance for accelerating the development and application of magnesium alloy structural parts.