摘要
在SolidWorks三维建模基础上,利用ProCAST软件对镁合金轮毂的充型与凝固过程进行了数值模拟,研究了温度场、流场、应力场对铸件的影响规律,预测了缺陷的位置和种类。基于模拟结果,对模具温度进行了调整,并增加了冒口和外冷铁。工艺优化后模拟结果显示,冒口和外冷铁的增加有助于减少浇注过程中出现缩孔缩松缺陷,有效避免热节在重要部位的产生,提高了铸件的质量。
Based on the three-dimensional modeling of SolidWorks,the filling and solidification processes of magnesium alloy wheel hub were simulated by the ProCAST software.The influences of temperature field,flow field and stress field on the castings were studied,and the position and type of defects were predicted.Based on the simulation results,the mold temperature was adjusted and the riser and external chills were added.The simulation results of optimized casting process show that the increase of riser and external chills is helpful to reduce the shrinkage cavity and shrinkage porosity in the pouring process and effectively avoid the occurrence of the hot spots in the important parts.Therefore,the casting quality can be improved.
作者
李云帅
朱小倩
林文华
沈明杰
LI Yun-shuai;ZHU Xiao-qian;LIN Wen-hua;SHEN Ming-jie(School of Materials Science and Engineering,Shaanxi University of Science and Technology,Xi'an 710021,Shaanxi,China;School of Mechanical and Electrical and Engineering,Shaanxi University of Science and Technology,Xi'an 710021,Shaanxi,China)
出处
《铸造》
CAS
北大核心
2020年第5期547-551,共5页
Foundry
基金
国家自然科学基金委青年项目(51701108)
陕西省自然科学基础研究计划(2019JQ-778)。
关键词
镁合金
轮毂
重力铸造
数值模拟
工艺优化
magnesium alloy
wheel hub
gravity casting
numerical simulation
process optimization
