采用消失模工艺生产薄壁壳体铸件 ,常因泡沫模样易变形而导致铸件尺寸超差 ;结合某壳体零件的生产实践 ,介绍了防止泡沫模样变形和减轻铸件变形的几项措施 :如从模具设计、成型工艺和填砂振动紧实参数方面进行控制 ,有效地减轻铸件的变形缺陷 The use of EPC technology to produce thin-walled shell castings often leads to oversize castings due to the easy deformation of the foam. Combined with the production practice of a shell part, several measures are introduced to prevent deformation of the foam and to reduce the deformation of the castings. Mold design, molding process and tightness parameters of sand filling vibration control, effectively reduce the deformation of the casting defects