机车柴油机前端箱体结构复杂,铸造中易产生缩松缩孔等缺陷。本文以铸造仿真软件Pro CAST为工具,对前端箱体铸造充型过程及其温度场、凝固过程及其凝固时间进行数值分析,得到了铸件缩松缩孔发生的部位和大小的模拟结果。以铸造缺陷分析模拟结果为依据,对柴油机前端箱体的铸造工艺提出了一系列改进措施,从而有效地避免了铸造工艺设计的盲目性,降低了由于多次工艺试验造成的资源浪费。 Locomotive diesel engine front box body structure is complex, easy to produce shrinkage shrinkage shrinkage and other defects in casting. In this paper, Cast CAS simulation software is used as a tool to simulate the filling process and the temperature field, the solidification process and the solidification time of the front box. The simulation results of the location and size of the shrinkage and shrinkage cavity are obtained. Based on the casting defect analysis and simulation results, a series of improvement measures are put forward to the casting process of the diesel engine front box, so that the blindness of the casting process design can be effectively avoided and the waste of resources due to the multiple process tests can be reduced.