镁合金压室模拟工艺参数优化  

Optimization of Simulation Process Parameters for Magnesium Alloy Casting Chamber

作　　者：刘正[1] 霍成鹏[1] 毛萍莉[1] 周乐[1] 

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110870

出　　处：《铸造》2011年第11期1084-1087,共4页Foundry

基　　金：国家科技支撑计划(2011BAE22B06)

摘　　要：压铸件产生的缺陷除了在凝固收缩的过程中容易出现,在冷室压铸机压射时,慢压射选取速度不当也是造成铸件缺陷的一个重要原因。通过对镁合金转向管柱支架的慢压射过程进行理论分析和计算机模拟辅助优化,得出加速度为0.6 m/s2、慢压射速度为0.4 m/s情况下,压射速度较为合理。能缩短生产周期,提高效率。Casting defects are usually caused by unsuitable choosing of slow injection speed of the cold chamber in die casting process, except the defects caused by solidification shrinkage. Based on the theoretical analysis of the slow injection process for magnesium alloy steering column bracket and the optimization of computer-assisted simulation, it is concluded that the injection rate, with an acceleration of 0.6 m/s^2 and an injection speed of 0.4 m/s, is more reasonable. This injection rate contributes to the reduction of production cycle and improvement of the production efficiency.

关 键 词：镁合金 压铸 慢压射 数值模拟 

分 类 号：TG249.2[金属学及工艺—铸造]