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对用75SiFe和稀土钡钙孕育剂瞬时孕育球铁的效果进行了对比试验．结果表明：稀土钡钙比75SiFe减白口能力强、孕育时受铁水成分影响较小、能提高球化率。
A comparative experiment was conducted on the effect of instant inoculation of ductile iron with 75SiFe and rare earth barium inoculant. The results show that the rare earth barium calcium is more capable of reducing the whiteness than 75SiFe, and is less affected by the hot metal composition at the time of inoculation, which can increase the spheroidization rate.