ProCAST在汽车轮毂制造中的应用

Application of ProCAST Applied for Manufacturing Automobile Hubs

为适应人们对汽车轮毂款式的追求,缩短汽车轮毂的研发周期迫在眉睫。应用CAD软件UG创建轮毂和模具的三维模型。借助CAE软件ProCAST自定义材料数据库,并模拟铸造过程。通过研究铝液充型和凝固过程,分析温度场变化、固相比例、Niyam判据以及缩松和缩孔等。研究表明:轮毂轮辋上下边缘以及浇铸中心处容易出现缩松和缩孔。在轮辋中心处、轮辋与轮辐交接处的模具区域采用保温措施,在与浇铸中心缩孔密集处接触的模具区域适当增加冷却强度,可实现顺序凝固,获得高质量的铸件。试验结果为汽车轮毂生产企业新产品的研发提供理论预测以及改进建议。

In order to satisfying people's pursuit of automobile hub style,it’s urgent to shorten the development cycle of automobile hub.The CAD software of UG is used to create the 3D models for hubs and molds.The CAE software of ProCAST is used to define custom material database and simulate casting process.Temperature distribution,solid fraction,Niyam criterion and shrinkage porosity are analyzed by studying aluminum liquid filling and solidification process.The results show that shrinkage porosity easily occurs in the upper and lower edges of hub rim and the casting center.High-quality castings can be obtained after sequential solidification,which is achieved by insulating heat in the areas of rim center and junction of rim and spokes and properly increasing the cooling intensity of the die area contacted with the casting center containing intensive shrinkages.The research results can provide theoretical forecast and improving advice for the enterprises of automobile wheel on developing new hub products.