根据球墨铸铁在凝固过程中的膨胀特性，对铸铁凝固过程中的膨胀和收缩这一对矛盾因素的定量计算，提出了球铁轧辊无冒口铸造工艺，探讨了用该工艺生产的轧辊缩孔与缩松的特性，在此基础上重新设计了冒口尺寸并对性能进行了检验，试验结果表明；采用无冒口铸造工艺制造球铁轧辊是可行的，更经济，且轧辊性能好于传统工艺。 According to the expansion characteristics of ductile iron in the solidification process and the quantitative calculation of the contradictory factors of the expansion and contraction during the solidification of the cast iron, the casting process of the non-riser of the ductile iron roll is proposed, and the shrinkage of the rolls produced by the process is discussed Based on which the riser size was redesigned and the performance was tested. The test results show that it is feasible, economical and the roll performance is better than the traditional Process.