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为了进一步改善振动铸造工况下的铸件结构,应用动网格技术与两相流模型进行复杂型腔内气液两相流的数值模拟,定位型腔内充型不完全的部位,根据实际结构进行改进,改善其充型性能。并以制动器支架铸件为例进行分析,发现制动器安装孔附近有充型不完全的现象,经过添加圆角结构,充型性能得到改善。进一步分析了分散体式结构(搅拌轮),对边角进行优化设计,获得良好的充型结构。
In order to further improve the structure of castings under vibration casting conditions, the numerical simulation of gas-liquid two-phase flow in complicated cavity is carried out by moving grid technique and two-phase flow model. The incomplete filling part of cavity is located. According to the actual structure To improve and improve its filling performance. The brake bracket casting is taken as an example for analysis. It is found that there is incomplete filling phenomenon near the brake mounting hole. After the fillet structure is added, the filling performance is improved. Further analysis of the dispersion-type structure (stirring wheel), the corner of the optimal design, get a good filling structure.