稀土蠕墨铸铁是一种以蠕虫状石墨为主的新型铸铁材料。它的机械-物理性能介于灰铸铁和球墨铸铁之间,不仅兼有两者的优点并有独特性,因而可对某些灰铸铁零件进行减薄壁厚、减轻重量的设计改革,节省铸件的金属材料。这种铸铁可加入合金元素使其合金化,从而获得某种特殊性能。自1965年我们开始研究和用冲天炉生产蠕墨铸铁以来,这种新型铸铁材料已被人们公认,尤其是七十年代以来,对它的应用已逐步在各个领域受 Rare earth compacted graphite cast iron is a worm-shaped graphite-based new cast iron material. Its mechanical-physical properties range from gray cast iron to ductile iron, not only combining the advantages of both, but also allowing the design of some gray cast iron parts to be wall-thinned, weight-saving, and metal-saving material. This cast iron alloy elements can be added to alloying, so as to obtain a special performance. Since 1965 when we started to study and manufacture vermicular graphite iron with cupola, this new type of cast iron material has been recognized, especially since the 1970s, its application has been gradually in various fields