稀土镁球墨铸铁问世至今已有十几年的历史,尤其是无产阶级文化大革命以来,我国广大工人、技术人员、干部在毛主席的革命路线指引下,高举“鞍钢宪法”的旗帜,坚决执行“独立自主、自力更生”的方针,结合生产做了大量的科学研究工作,成功地把球铁用于汽车、拖拉机等零件。以铁代钢,以铸代锻,普遍开花结果。这充分说明社会主义制度的优越 Since the advent of rare earth magnesium ductile iron, it has been more than ten years since its founding. Since the Great Proletarian Cultural Revolution, most workers, technicians and cadres in our country, under the guidance of Chairman Mao’s revolutionary line, hold the banner of “Ansteel Constitution” and resolutely implement the “ Independent, self-reliance ”approach, combined with production done a lot of scientific research, the successful use of ductile iron for cars, tractors and other parts. Iron and steel to cast forging, the general flowering results. This fully shows the superiority of the socialist system