本文研究了提高ZL—S424合金铸件尺寸移定性的方法、工艺和结果;提出了适用于高精度仪器框架等铸件的稳定化处理工艺,可供工厂提高ZL-S424铸铝件的尺寸稳定性作参考。 In this paper, the method, process and result of improving the dimensional stability of ZL-S424 alloy castings are studied. The stabilization process for castings such as high-precision instrument frame is put forward, which can be used by factories to improve the dimensional stability of ZL-S424 castings reference.