基于正交试验与CAE模拟的烟雾报警器外壳翘曲优化分析

Optimization Analysis of the Shell Warpage of Smoke Alarm Based on Orthogonal Test and CAE Simulation

利用CAE及Moldflow软件对烟雾报警器外壳模型进行浇注系统以及冷却系统的建立,基于正交试验与CAE模拟技术对烟雾报警器外壳模型进行翘曲优化分析,产品的翘曲变形主要由于收缩不均引起,初始翘曲变形量为0.572 0 mm。各工艺参数对翘曲变形量的影响程度最大的为溶体温度,其次为保压压力、保压时间、冷却时间,最小为模具温度。在熔体温度220℃、模具温度60℃、保压压力140 MPa、保压时间10.0 s、冷却时间30 s的工艺参数设置下,产品翘曲变形量为0.183 0 mm,翘曲变形量最小,与初始翘曲变形量相比降低68.01%,产品精度显著提高。

The CAE technology, Moldflow software was used to establish the gating system and accompanying cooling system of the smoke alarm housing model. Based on the orthogonal test and CAE simulation technology, the warpage deformation of the product was mainly caused by uneven shrinkage. The initial warpage deformation is 0.572 0 mm. Melt temperature has the greatest influence on warpage deformation, followed by holding pressure, holding time, cooling time and the least is mold temperature. Under the process parameter settings of melt temperature 220 ℃, mold temperature 60 ℃,holding pressure 140 MPa, holding time 10.0 s and cooling time 30 s, the product warpage deformation is 0.183 2 mm, which is the smallest. Compared with the initial warpage, the warpage deformation is reduced by 68.01%, and the product accuracy is significantly improved.