薄壁铝合金壳体低压铸造工艺设计及模拟优化  

Design and Optimization of Low Pressure Casting Process for Thin-Walled Al Alloy Shell

作　　者：熊华平[1] 熊博文[1] 蔡长春[1] 刘国锋[2] 

机构地区：[1]南昌航空大学轻合金加工技术与科学国防学科重点实验室 [2]江铃汽车股份有限公司

出　　处：《特种铸造及有色合金》2014年第8期831-834,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51164028;51261025);江西省教育厅资助项目(GJJ12410)

摘　　要：对重要结构件薄壁铝合金壳体进行了低压铸造工艺设计,通过对充型流场、温度场以及缩孔、缩松的数值模拟预测,优化了该铸件的低压铸造工艺方案。模拟结果表明,采用导热更好的铜芯替换钢芯,能获得平稳的充型行为和均匀的温度场,预测的缩孔、缩松未出现在铸件上;优化后的薄壁铝合金壳体铸件的低压铸造工艺方案合理,可以有效地优化壳体温度场,降低铸件出现缩孔、缩松的几率,生产出了合格铸件。The low pressure casting process for thinwalled A1 alloy shell as nent was designed, and the filling flow pattern, temperature field and shri thinwalled aluminum alloy shell were simulated to optimize the low pressure lated results show that with copper core instead of steel core, the stable fillin ature distribution can be visualized, and the shrinkage porosities （holes） are out the possibili shell. The optimized casting process can optimize effectively ty of shrinkage holes（porosities）,obtaining the qualified shell a crucial structural compo nkage porosities（holes） in casting process. The simu g flow and uniform tem visualized to be distrib temperature field and reduce with high quality. per uted the

关 键 词：薄壁铝合金铸件 数值模拟 温度场 缩孔、缩松 

分 类 号：TG249.2[金属学及工艺—铸造]