摘要
利用数值模拟对铝合金变速箱箱体挤压铸造过程进行分析,预测了原始工艺方案中箱体缩松缩孔缺陷的分布情况,通过分析其形成原因添加了合理的冷却系统。在此基础上运用正交试验对工艺参数进行了多目标优化。结果表明:优化后的箱体无缩松缩孔缺陷,二次枝晶间距减小到36.37μm。通过金相分析,验证了箱体挤压铸造工艺的正确性。
The squeeze casting process of aluminum alloy gearbox case was analyzed by numerical simulation.The shrinkage porosity defects distribution of the box in the original process plan was predicted.A reasonable cooling system was added by analyzing the causes.On this basis,the multi-objective optimization of the process parameters was performed by using orthogonal tests.The results show that the optimized box has no shrinkage defects,and the secondary dendrite spacing decreases to 36.37 μm.The correctness of the squeeze casting process was verified by metallographic analysis.
作者
杨闯
苏小平
周大双
康正阳
YANG Chuang;SU Xiaoping;ZHOU Dashuang;KANG Zhengyang(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《热加工工艺》
北大核心
2023年第19期67-70,共4页
Hot Working Technology
基金
江苏省高校自然科学研究课题(19KJB460005)。
关键词
铝合金箱体
挤压铸造
工艺优化
金相分析
aluminum alloy box
squeeze casting
process optimization
metallographic analysis
