球墨型铸铁作为一种优良的结构材料,自一九四七年问世以来,发展极快。我国是世界上较早研制球墨铸铁的国家之一。由于广大铸造工作者的努力,我国生产的球墨铸铁,无论在熔炼、造型、浇注等工艺上,还是在材料合金等其它各个方面,与国际上先进的国家相比,并无逊色。而且在某些方面,还有独到之处。 Nodular cast iron as an excellent structural material, since its publication in 1947, has developed rapidly. China is one of the countries in the world to develop ductile iron earlier. Due to the efforts of the majority of foundry workers, the ductile iron produced in our country is inferior to the advanced countries in the world in terms of smelting, molding, pouring and other processes as well as other aspects such as material and alloy. And in some ways, there’s something special.