高固相率半固态成形铝合金轮毂的数值模拟  

Numerical Simulation of Semi-solid Forming Aluminum Alloy Hub with High Solid Rate

作　　者：胡南 苏勇[1] 吴楠 HU Nan;SU Yong;WU Nan(School of Material Science and Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《热加工工艺》2021年第21期54-57,共4页Hot Working Technology

基　　金：国家重点研究发展计划资助项目(2016YFB0301003)。

摘　　要：利用计算机软件ProCAST模拟了高固相率的半固态流变成形A356铝合金轮毂。根据全立式压铸机的特点,设计了中心压铸方案。充型过程中,半固态铝合金浆料呈层流流动,没有卷气和涡流。设计了三因素三水平正交试验方案,得出的最佳工艺参数为:浆料温度570℃,模具预热温度250℃,压射速度0.3 m/s。在此工艺条件下,铝合金轮毂的内部缩孔缩松缺陷体积最小,为3.4615 cm^(3)。通过X射线探伤得知轮毂中的缺陷基本被消除。The high solid fraction semi-solid rheology of A356 aluminum alloy wheel hub was simulated by using ProCAST computer software.According to the characteristics of the full vertical die casting machine,the center die casting scheme was designed.In the filling process,the semi-solid aluminum alloy slurry flows in laminar flow,and there is no coiling gas and eddy current.A three-factor three-level orthogonal test scheme was designed.The optimum technological parameters are slurry temperature of 570℃,mold preheating temperature of 250℃,injection velocity of 0.3 m/s.Under this process condition,the shrinkage holes and porosityies of the aluminum alloy hub is the smallest,which is 3.4615 cm^(3).By X ray inspection,the defects in the hub are basically eliminated.

关 键 词：高固相率 A356铝合金 轮毂 半固态 数值模拟 

分 类 号：TG249.9[金属学及工艺—铸造]