研究了立式磨床摇臂灰铸铁件的铸造工艺,利用数值模拟法研究了铸件的凝固过程。结果表明,在铸件最大壁厚处产生了缩孔、缩松缺陷。根据数值模拟结果并结合理论分析,对铸造工艺方案进行了优化设计,采用该优化工艺消除了铸造缺陷,降低了产品废品率。 The casting technology of the vertical grinder arm gray cast iron was studied. The solidification process of the castings was studied by numerical simulation. The results show that the largest wall thickness in the casting shrinkage, shrinkage defects. According to the numerical simulation results and the theoretical analysis, the optimal design of the casting process is carried out. The optimized process eliminates the casting defects and reduces the reject rate.