采用有限元模拟软件ProCAST中的热弹塑性模型,对不同浇注方式下铸造风力发电机主轴热裂缺陷的形成倾向进行了模拟。通过对计算结果的分析,最佳浇注方式是底注式浇注系统,最佳工艺是在法兰盘和铸件底部添加冷铁,可使铸件的热裂减小,并成功生产了性能符合要求的铸件。 The thermal elasto-plastic model of ProCAST is used to simulate the formation tendency of the main shaft of the cast-in-place wind turbine under different casting methods. Through the analysis of the calculation results, the best pouring method is the bottom-pouring system, the best process is to add cold iron in the flange and the bottom of the castings, which can reduce the thermal cracking of the castings and successfully produce the performance to meet the requirements casting.