确定了用真空薄膜造型工艺(V法)制造的车辆铸钢件过程中气孔形成的原因。检查了在所使用的造型材料中有否要寻找的化学元素。对俄罗斯市场上的两家供应商的造型材料进行对比试验后发现,气体形成元素的成分过量。这表明,必须对购进材料进行检查,即使对来自可信供货商的材料也应如此,推荐了2种国内大家熟悉的快速检验方法。 Determine the reasons for the formation of pores in the castings of vehicles made by the vacuum film forming process (method V). Check if there is a chemical element to look for in the modeling material used. A comparative study of modeling materials from two suppliers in the Russian market found that the composition of gas-forming elements was excessive. This shows that the purchase of materials must be inspected, even for materials from credible suppliers should be the case, recommended two kinds of fast domestic familiar test methods.