复杂壳体类镁合金压铸件凝固过程工艺优化  

Design and Optimization of Process Structure and Parameters for Solidification Process of Complicated Die Casting Magnesium Housings

作　　者：陈磊[1] 游国强[1,2] 李阳[1] 明玥[1] 杨明华[1] 李扬德 李卫荣 

机构地区：[1]重庆大学材料科学与工程学院 [2]国家镁合金材料工程技术研究中心 [3]东莞宜安科技股份有限公司

出　　处：《特种铸造及有色合金》2014年第10期1073-1076,共4页Special Casting & Nonferrous Alloys

基　　金：广东省中科院战略合作项目(2010A090100033);山东省自主创新资助项目(2012CX60301);粤港关键领域重点突破资助项目(2010A090604001);重庆市科技攻关资助项目(CTCS2010AA4045)

摘　　要：针对复杂壳体类镁合金压铸件,进行了浇注系统和工艺参数设计,运用AnyCasting软件对其凝固过程进行了数值模拟,预测了压铸件中可能出现缩孔、缩松的部位。在厚大部位增加溢流槽的数量和体积、降低浇注温度和模具温度,由于其补缩能力有限,以致缩孔、缩松等缺陷降低不明显;而在厚大部位设置内浇道,改变厚大部位的凝固顺序和增加对厚大部位的补缩,缩孔、缩松明等缺陷明显减少。Pouring system and processing parameters were designed for die casting complicated magnesi- um alloy housings. The solidification process of die casting magnesium alloy was simulated with the help of AnyCasting software to forecast macro porosity probability in the die casting. Through adding num- bers and size of overflow at thick location, decreasing pouring temperature and mould temperature, effects of eliminating shrinkage porosity （holes） exhibit weak as a result of low feeding ability. Howev- er, through setting ingate at the thick location to modify solidification sequence and increase feeding abil- ity of thick location, defects such as shrinkage porosities （holes） can be eliminated effectively.

关 键 词：缩孔 镁合金 压铸 AnyCasting软件 

分 类 号：TG292[金属学及工艺—铸造]