铝合金半固态压铸与液态压铸充型过程的模拟  

Numerical Simulation for Filling Process of Aluminum Alloy in Semi-Solid Diecasting and Liquid Diecasting

作　　者：史立峰[1] 赵大志[2] 王平[3] 崔建忠[3] 

机构地区：[1]辽宁装备制造职业技术学院塑性成形系,辽宁沈阳110161 [2]东北大学材料与冶金学院,辽宁沈阳110004 [3]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《铸造》2012年第5期494-497,共4页Foundry

基　　金：国家自然科学基金资助项目(50771030)

摘　　要：利用AnyCasting软件模拟了ZL201合金半固态压铸和液态压铸充型的流动过程,并进行了试验验证。模拟及试验结果显示:合理的控制速度转换位置,能够保证半固态浆料以层流方式充填型腔,获得平缓的充型过程,有利于避免卷气、氧化夹杂等缺陷的产生。在相同的速度条件下进行液态压铸,金属液以湍流方式充填型腔,容易形成喷溅和卷气的现象。模拟结果与试验相符合。The flow characteristics of semi-solid filling and liquid filling were compared and analyzed by using the AnyCasting software.The experiment was conducted to validate the simulated results.The results indicate that if speed switch section is reasonable,the semi-solid slurry fill the cavity by way of laminar flow which can reduce the foundry defects such as gas cavity and oxide inclusion.However,under the same speed conditions,the liquid filling is characteristic of turbulent flow,and air entrapment and sputtering easily occur.The simulation results are well in agreement with experimental ones.

关 键 词：铝合金 半固态 压铸 数值模拟 层流 

分 类 号：TG249.2[金属学及工艺—铸造]