This paper states through experements,alloy Of RE-Si may be promate graphitizatio-prccess of malleable cast iron by means of its addition to the original molten iron .

• 提出在可锻铸铁的生产过程中,炉前使用稀土硅铁,铝及铋等微量元素进行孕育处理,能促进渗碳体的分解,加速石墨化过程,缩短退火周期。