我国生产高性能球墨铸铁,大多是用本溪优质生铁为原料。为了适应我国社会主义建设飞跃发展的需要,利用本地资源扩大稀土镁球墨铸铁的使用范围具有重大的政治经济意义。湖北地区各工厂在试验与生产本地生铁球墨铸铁中碰到不少问题,其中突出的问题是球墨铸铁的综合性能较差,特别是冲击值低和球化不稳定。 China’s production of high-performance ductile iron, mostly with high-quality pig iron as raw material. In order to meet the needs of rapid development of socialist construction in our country, it is of great political and economical significance to utilize the local resources to expand the use of rare earth magnesium nodular cast iron. Various factories in Hubei Province have encountered many problems in testing and producing local pig iron ductile iron, among which the outstanding problem is the poor comprehensive performance of ductile iron, especially the low impact value and instability.