蠕墨铸铁作为一种介于球墨铸铁与灰铸铁之间的新型铸铁材料,其石墨形态既不同于球状石墨,也不同于片状石墨,而是介于两者之间的一种过渡形的石墨,即所谓“蠕虫状石墨”。蠕铁的机械性能接近于球墨铸铁,铸造性能、切削加工性能和导热性则优于球铁而接近于灰铸铁。因此,它广泛地应用于一些形状复杂、断面尺寸差别大,强度要求高,能经受热循环载荷或要求组织致密和耐磨 As a new type of cast iron material between ductile iron and gray cast iron, vermicular graphite iron has a graphite morphology different from that of spherical graphite and flaky graphite, but a transitional form between the two Graphite, the so-called “worm-like graphite.” The mechanical properties of vermicular iron close to ductile iron, casting performance, cutting performance and thermal conductivity is better than the ductile iron and close to the gray iron. Therefore, it is widely used in some complex shape, section size differences, high strength requirements, can withstand thermal cycling load or require dense and wear-resistant organizations