摘要
以铝合金制动器安装底板为研究对象,利用CATIA软件建立铸件、浇注系统以及冷却系统等三维模型。应用MAGMA软件对铸件低压铸造的凝固过程进行数值模拟,预测了原始冷却工艺中产生缩孔、缩松的位置,并对缺陷产生原因进行分析。根据数值模拟结果对冷却系统进行了优化,通过对比不同的冷却方案,研究冷却管道的开启时间对铸件凝固过程中温度场的影响,获得了合理的冷却工艺方案。研究结果表明:该优化方法实现了铸件顺序凝固,消除了铸件的内部缺陷。
The study object was aluminum alloy brake mounting plate, and three-dimensional models of castings, gating system and cooling system were established by CATIA software. The solidification process of low pressure die casting was simulated by MAGMA software. The positions of shrinkage cavity and porosity in the original cooling process were predicted,and the causes of defects were analyzed. Cooling system was optimized based on numerical simulation results. By comparing different cooling schemes, the effect of opening time of cooling pipeline on temperature field during solidification of castings was studied, and a reasonable cooling scheme was obtained. The results show that this optimization method achieves the sequential solidification of castings, and eliminates the internal defects of castings.
作者
符继麟
苏小平
陈川川
李智
FU Jilin;SU Xiaoping;CHEN Chuanchuan;LI Zhi(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《热加工工艺》
北大核心
2020年第21期60-63,共4页
Hot Working Technology
关键词
铝合金
制动器安装底板
低压铸造
数值模拟
冷却工艺
aluminum alloy
brake mounting plate
low pressure die casting
numerical simulation
cooling process
