运用Z-cast模拟软件对铸钢球体座铸件的充型和凝固过程分别进行了数值模拟,分析了其缺陷产生的部位和原因。根据模拟结果并结合理论分析,利用该软件优化出了合适的冒口尺寸及其分布。结果表明,该优化工艺实现了铸件的顺序凝固,消除了缩孔、缩松。生产实践表明,采用该铸造工艺,生产的铸件组织致密,符合生产技术要求。 Z-cast simulation software was used to simulate the process of filling and solidification of the cast steel ball seat castings respectively. The location and cause of the defects were analyzed. Based on the simulation results and the theoretical analysis, the software was used to optimize the riser size and its distribution. The results show that the optimization process to achieve the order of casting solidification, eliminating shrinkage, shrinkage. Production practice shows that the use of the casting process, the production of castings dense, in line with production and technical requirements.