摘要
以铝合金轮毂为研究对象,对挤压铸造充型和凝固过程进行数值模拟分析。挤压过程中金属液充型不平稳,将产生卷气和涡流等现象,且在轮毂中心和轮辋处易产生缩松和缩孔。在此基础上,对浇注系统进行改进和工艺参数优化,并对优化后的参数进行数值模拟。结果表明,金属液在充型过程中较为平稳,消除了缩松、缩孔等缺陷。
Taking aluminum alloy wheel hub as the research object,the filling and solidification process of squeeze casting was numerically simulated.In the process of extrusion,the metal liquid filling was not stable,which would lead to the phenomenon of air entrainment and eddy,and shrinkage cavity and porosity were easy to occur in the hub center and rim.On this basis,the casting system was improved and the process parameters were optimized,and the optimized parameters were simulated numerically.The results show that the filling process of liquid metal is relatively stable and the defects such as shrinkage cavity and porosity are eliminated.
作者
洪涛
王东方
华逢志
HONG Tao;WANG Dongfang;HUA Fengzhi(School of Mechanical and Power Engineering,Nanjing University of Technology,Nanjing 211816,China)
出处
《铸造技术》
CAS
2020年第12期1160-1164,共5页
Foundry Technology
关键词
铝合金轮毂
挤压铸造
数值模拟
工艺参数优化
aluminum alloy wheels
squeeze casting
numerical simulation
process parameter optimization
