【摘要】 研制了一种特殊的厚壁球铁模头铸件，给出了铸造工艺及具体的工艺参数，介绍了确保该铸件质量的几种有效措施．更多还原

【Abstract】 In this paper, the processes of ductile iron casting with heavy section including the means of rapid cooling and sprue stopper etc. during the production are described更多还原