镁合金铸造成型中的数值模拟  

Numerical simulation of magnesium alloy casting

作　　者：刘琳[1] LIU Lin(Dalian University of Finance and Economics,Dalian 116023 China)

机构地区：[1]大连财经学院,辽宁大连116023

出　　处：《新余学院学报》2024年第5期65-71,共7页Journal of Xinyu University

摘　　要：以AZ91D镁合金汽车控制臂为研究对象,采用Magma Soft铸造模拟软件对汽车控制臂的挤压铸造成型过程进行数值模拟,包括汽车控制臂浇铸过程中的充型和后期凝固过程,并优化了成型工艺。模拟结果表明,汽车控制臂在充型过程中,在充型达到60%时易于在左侧部位出现易卷气部位而形成气孔、夹渣等缺陷。优化后汽车控制臂的充型过程相对优化前更加平稳,控制臂较薄处以及嵌件处的卷气得到消除,避免了形成气孔、夹渣等缺陷。优化后挤压铸造汽车控制臂的成型质量良好,没有出现浇不足以及凝固补缩等缺陷,整个充型过程平稳,表明采用数值模拟方法对AZ91D镁合金控制臂的成型过程进行模拟优化是可行的,能得到成型质量良好的挤压铸件。With the automobile control arm of AZ91D magnesium alloy as the research object,the squeeze casting process of automobile control arm was simulated by Magma Soft casting simulation software,including mold filling and post solidification process in the casting process of automobile control arm,and the forming process was optimized.The results show that when the mold filling reaches 60%,the control arm of the automobile is easy to form defects such as air hole and slag inclusion on the left side of the control arm.After optimization,the filling process of the automobile control arm is more stable than that before.The air entrainment at the thinner part of the control arm and the insert is eliminated,avoiding the formation of pores,slag inclusion and other defects.The optimized squeeze casting automobile control arm has good forming quality,without defects such as insufficient pouring and solidification feeding,and the whole filling process is stable.It shows that the forming process of AZ91D magnesium alloy control arm can be simulated and the forming process can be optimized by using numerical simulation method,and the extrusion casting with good forming quality can be obtained.

关 键 词：AZ91D镁合金 挤压铸造 工艺参数 充型 数值模拟 

分 类 号：TG249.2[金属学及工艺—铸造]