0引言在对球铁的研究中，一般认为高强度球铁应具有珠光体基体，而铁索体基体的球铁只具有高韧性的特点。经反复试验，本厂生产的铸态铁素体基体球铁同时具有高强度和高韧性的特点。1稳定原材料生产铸态球铁，原材料是基础。材料的质量对稳定生产铸态球铁至关重要，必须严格检 0 Introduction In the study of ductile iron, it is generally believed that high-strength ductile iron should have a pearlite matrix, while the ductile iron of the ferrite body only has the characteristics of high toughness. After repeated tests, the factory production of ferrite matrix ductile iron has both high strength and high toughness characteristics. A stable raw material production Ductile iron, raw materials is the foundation. The quality of the material is essential for the stable production of cast ductile iron and must be strictly inspected