印度标准杂志1996年3月号发表了印度及其它国家可锻铸铁管标准对比情况及可锻铸铁管的优越性,现摘要介绍如下: 什么是可锻铸铁? 与灰口铸铁相对比,其中碳完全变成球状石墨,而灰口铸铁中的碳呈薄片状分布在金属基体上。碳呈薄片状存在时,其应力较为集中,因为碳化物是Fe_3C,而石墨是以游离碳存在的。 Standard March 1996 issue of India and other countries issued a comparison of malleable cast iron pipe standards and the superiority of malleable cast iron pipe are summarized as follows: What is malleable iron? Compared with gray cast iron, carbon which completely turned into spherical graphite, The gray cast iron in thin carbon-like distribution in the metal matrix. The presence of carbon flakes, the stress is more concentrated, because the carbide is Fe_3C, graphite is present as free carbon.