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值得称道的是,Ch.F.瓦尔顿(Walton)[1]一次就概括性地列举了许多美国的铸铁标准。他在灰铸铁、球墨铸铁、可锻铸铁和高合金铸铁的大量表格中列出了各种牌号和材料性能与应用范围。就球墨铸铁来说,就有美国材料试验协会(ASTM)、美国机械工程师学会(ASME)、美国汽车工程师学会(SAE)和美国军部(U.S.Military)的各种牌号标准达7种,其内容有部分是重复的,但其中大部分是人们所不熟悉的。此外,近来在文献中有关镁处理可锻铸铁的向题,曾经是很平静的,最近J.法尔古依(J.Fargues)和J.Cl,马尔格里(J.Cl.Margerie)[2]却报导了他们的研究结果。他们采用
It is commendable that Ch.F. Walton [1] summarized a number of American cast iron standards in a nutshell. His extensive list of gray cast iron, ductile iron, malleable iron and high-alloy cast iron lists various grades and material properties and applications. As far as ductile iron is concerned, there are seven grades of various grades approved by ASTM, ASME, SAE and USMilitary. Its contents Some are repetitive, but most of them are unfamiliar to people. In addition, the recent literature on magnesium treatment of malleable cast iron has been very quiet, and recently J. Fargues and J. Cl.Margerie [2] But reported the results of their research. They use