西南国营411厂工程师陈秀侗和工人朱惠麟等学习苏联先进经验,应用矽铁镁作球墨剂,完全不加铜,制造矽铁镁球墨铸铁一次处理成功。这一个铸铁方面的重要改进,将为国家节约大批的铜。在我国铸铁工业上,华北国营经纬纺织机械制造厂在去年曾经作了几项重要改革,把制造球墨铸铁的球化、墨化两次处理变为一次处理,把原料由只能用低磷铁扩大到可以用国内任何钢铁厂出产的铸铁配料等, Southwest State-owned factory engineer Chen Xiu Dong 411 and workers such as Zhu Hui-lin learning the advanced Soviet experience, the application of ferrosilicon for the nodular ink, completely without copper, ferrosilicon ductile iron manufacturing a successful treatment. This important improvement in cast iron will save the country a large amount of copper. In China’s cast iron industry, North China State-owned Jingwei Textile Machinery Factory made several important reforms last year, the ball manufacturing of ductile iron, ink two treatment into a deal with the raw materials can only be used low-phosphorus iron Expanded to any domestic iron and steel plant can produce cast iron ingredients, etc.,