镁合金厚壁压铸铸件的铸造参数确定与工艺模拟  

Determination of casting parameters of thick wall die-casting of magnesium alloy and simulation of its processing

作　　者：王智平[1,2] 贵菁[1] 冯力[1] 肖荣振[1] 朱昌盛[1] 安国升[1] 

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学甘肃有色金属及复合材料工程技术研究中心,甘肃兰州730050

出　　处：《兰州理工大学学报》2011年第4期14-18,共5页Journal of Lanzhou University of Technology

基　　金：教育部博士点基金(20070731001);国家自然科学基金(10964004)

摘　　要：以镁合金拉伸/冲击试棒构成的铸件为研究对象,分析厚壁压铸铸件的各项铸造工艺参数.借助铸造CAE技术,结合PQ平方图及金属液波动模型优化内浇口面积及各项速度参数,模拟高压铸造过程中水冷却系统、内浇口速度对凝固缺陷的影响.结果表明:该铸件内缩孔、缩松的位置与大小.解决厚壁压铸铸件各项工艺参数合理选择的问题.Taking the casting of tensile sample and impact sample both made of magnesium alloy as the research object,various processing parameters of the thick-wall die-cast samples were analyzed.With the help of foundry CAE technology,the ingate sectional area and various speed parameters were optimized and the effect of cooling water system and ingate velocity on solidifying defects was simulated by using square graph of PQ and wave model of liquid metal.And the size and location of porosities and shrinks were exposed.The problem of reasonable selection of processing parameters of thick-wall die-casting was solved.

关 键 词：PQ平方图 冷却曲线 速度参数 CAE技术 

分 类 号：TG249.2[金属学及工艺—铸造]