近十年来,在国内外的研究和实践中,已经证明贝氏体等温淬火球墨铸铁,能达到一个不寻常的高强度、高延性。它的基本原理是把球墨铸铁的生产技术和热处理的工艺联合起来。相对来说,这种工艺方法比较简单,容易掌 In the past ten years, at home and abroad, research and practice have proved that bainite isothermal quenching ductile iron can achieve an unusual high strength and high ductility. Its basic principle is to ductile iron production technology and heat treatment process together. Relatively speaking, this method is relatively simple and easy to handle