“上盖”压铸件工艺设计及数值模拟研究

Numerical Simulation and Process Study of Roof Cover Die-casting

在分析铝合金"上盖"压铸件结构的基础上,通过三维建模及网格划分进行工艺分析、浇注系统计算、模具设计。根据铸件的温度场、流场、铸件缩孔缩松所在位置及孔隙率,模拟并优化出最佳压铸工艺参数为:压射速度为5 m/s,模具预热温度为220℃,铝合金浇注温度为660℃。根据优化的工艺参数进行实际生产,得到质量优良的"上盖"压铸件。

Based on the structure analysis of aluminum alloy die casting part ＂roof cover＂, the process analysis, gating system design and die design were carried out by 3D modeling and meshing. Through the simulation analysis in casting temperature field, filling flow condi- tion, shrinkage hole and porosity location, the best optimized die cast parameters were ob- tained：injection speed 5 m/s, mold preheating temperature 220 ℃, aluminum alloy pouring temperature 660 ℃. The optimized parameters were applied to actual production, Obtaining high quality die casting part ＂roof cover＂.