基于UG中座的铸造工艺设计

Design of Casting Process for Central Base Castings Based on UG

以中座铸件为对象,通过UG软件完成中座三维建模,进行了铸造工艺设计。基于铸件的加工余量等级,确定了本文设计的加工余量;应用型板和定位销实现了铸件的分型面精度控制;采用把铸件底部的部分做成活块,实现了型芯的设计。然后对冷铁冒口进行了CAE模拟设计,得到了中座铸件的热节分布图。铸件热节位于铸件底部,凝固时间最长可达3h,实现了铸造CAE对缩孔缩松的预测,并考虑利用石墨自膨胀来减少冒口的补缩量,完成了铸件压边冒口的布置设计。在浇注系统的设计中,确定金属液面的上升速度为12.5mm/s,完成了铸件CAE对浇注系统的金属液体的流动速度,模拟确定了金属平稳充型。完成了中座铸造CAE数值模拟验证,给出了设计铸件的缩松预测。

Taking central base castings as objects, through the UG software was used to complete the three-dimensional modeling of central base, and casting process was designed, including machining allowance, application plate and positioning pin, parting surface control, the design of active block and core. Then cold iron and riser were designed by CAE simulation, distribution diagram hot section block castings were obtained. Casting hot section was located in the bottom of the casting, the solidification time of up to 3 hours, the casting of CAE on shrinkage prediction, and consider reducing feed amount of riser ushg graphite expansion, completed the layout design of casting riser. In the design of gating system, the metal surface was the design of the rising speed of 12.5 ram/s, CAE on the gating system of casting metal liquid flow velocity was completed, simulation to detemline the metal smooth filling. Finally a CAE numerical simulation of castings was completed, a design of casting porosity prediction was given.