近年来，由于工业发达国家的废钢价格远低于新生铁，于是不用新生铁，只用废钢和回炉铁在炉内增碳的合成铸铁的冶炼技术应运而生。用合成铸铁直接生产铁态铁素体球墨铸铁件，不仅成本低，而且在化学成分相同时，还可以获得稳定的、更好的力学性能。富雄机械制造有限公司是一个 In recent years, as the scrap prices in industrialized countries are much lower than that of new-generation iron, there is no need to use fresh-pig iron. The smelting technology of synthetic cast iron, which uses only carbon steel and scrap iron to add carbon in the furnace, has emerged. Direct production of ferrous ferrite nodular cast iron from synthetic cast iron not only lowers costs but also achieves stable and better mechanical properties at the same chemical composition. Fuxiong Machinery Manufacturing Co., Ltd. is one