铝合金制动器隔离盘低压铸造的数值模拟及优化  

Numerical Simulation and Optimization of Low-pressure Casting of Aluminum Alloy Brake Isolation Disk

作　　者：卢善周 苏小平[1] 朱慧明 LU Shanzhou;SU Xiaoping;ZHU Huiming(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《热加工工艺》2022年第19期66-68,72,共4页Hot Working Technology

摘　　要：为了探究工艺参数对制动器隔离盘低压铸造过程的影响并减少铸件缺陷,设计了2个内浇道的浇注系统,运用ProCast软件模拟计算充型、凝固过程,预测出铸件缺陷产生的位置位于中部圆环和下底座环形与肋板交界较厚部位的内部。通过适当增加充型压力,提升模具预热温度至350℃,在腹板中心圆环中间和远离内浇口的底部与肋板交界处加装水冷通道,在腹板和内圆环的接触部位加装冷铁,实现铸件顺序凝固,基本消除铸件缩松缩孔的宏观缺陷,得到质量良好的铸件。In order to explore the influence of process parameters on the low pressure casting process of the brake isolation disc and reduce casting defects, the gating system with two internal runners was designed. ProCast software was used to simulate the filling and solidification process. The location of casting defects was predicted to be located in the thick part of the middle ring and the lower base ring and rib plate. By properly increasing the filling pressure, raising the die preheating temperature to 350℃, adding a water-cooled channel between the center ring of the web and the bottom away from the inner gate and the rib plate, and adding cold iron to the contact part of the web and the inner ring, the sequential solidification of castings is realized, the macroscopic defects of shrinkage porosity and shrinkage holes are basically eliminated, and good quality castings are obtained.

关 键 词：隔离盘 低压铸造 模具预热温度 水冷却 缩孔缩松 

分 类 号：TG249.2[金属学及工艺—铸造]