我厂生产的QT40-10球墨铸铁中小件(重量3～5公斤),目前采用冲入法生产,由于铁水运输和浇注时间较长,衰退和降低温度成了严重问题。此外,对薄壁铸件,浇注温度要求高些,而合适的球化处理温度却偏低,容易产生冷隔和皮下气孔,因此,在大量流水生产球铁铸件中,采用冲入法工艺,难以保证质量。 I produced QT40-10 ductile iron small and medium sized pieces (weighing 3 to 5 kg), currently used by the punch method of production, due to a long time of hot metal transport and pouring, recession and reduce the temperature has become a serious problem. In addition, thin-walled castings, pouring temperature requirements higher, and the appropriate pelletization temperature is low, prone to cold and subcutaneous pores, therefore, in a large number of water production of ductile iron castings, using punch method, it is difficult Quality assurance.