应用阶梯试样法进行浇注试验，研究了在国产制芯原材料基础上的粘结剂用量及组分配比、原砂含泥量和水分、原砂粒度、附加物、砂芯存放时间和环境相对湿度、涂料、浇注温度等制芯和浇注工艺因素对铸件质量的影响，提出了减少铸件脉纹和粘砂缺陷，提高铸件表面精度的工艺方向。 The pouring test was carried out by the step sample method. The amount of binders and the proportioning of components on the basis of domestic raw materials were studied. The content of sand and moisture in raw sand, the particle size of original sand, the addition time, the storage time of sand core and the environment Humidity, paint, pouring temperature and other casting and casting process factors on the quality of castings, proposed to reduce casting pulse and sticky sand defects and improve the casting surface accuracy of the process.