球墨铸铁是一种很有发展前途的以实现“以铸代锻”“以铁代钢”的结构材料。在毛主席教育革命路线的指引下,在厂、校党委的正确领导下,我们与红山材料试验机厂一车间工人师付和技术员,共同对用本省“三九”生铁和焦炭熔制材料试验机上的主要球铁件进行了试验,取得了初步效果,生产出综合机械性能达到QT—70—2—2.5牌号的球铁件。试验小结如下。 Ductile iron is a very promising material to achieve “cast forged” and “iron-on-steel” structural materials. Under the guidance of Chairman Mao’s educational revolution and under the correct leadership of the factory and school party committees, we worked with workers in a workshop in Hongshan Materials Testing Factory to pay and technicians to jointly use the “39” pig iron and coke melting materials Test the main ductile iron pieces were tested and achieved initial results, to produce a comprehensive mechanical properties QT-70-2-2.5 grades of ductile iron pieces. Test summary is as follows.