根据铸件的结构特点和性能要求,结合调试出国产品件,在对比球墨铸铁、可锻铸铁和球墨可锻铸铁三种材质特性和优缺点的基础上,对于汽车底盘小而薄的件采用了球墨可锻铸铁生产,并实现了稳定地大量流水生产,取得了较好的经济效益。作者在文中阐述了有关参数的选定;提出了对一些问题的看法。 According to the structural characteristics and performance requirements of the castings, the article compares the properties of the three materials of ductile iron, malleable cast iron and ductile malleable cast iron with the advantages and disadvantages of the castings, and uses ductile malleable cast iron for the small and thin parts of automobile chassis Achieve a steady flow of water production, and achieved good economic returns. The author elaborates on the selection of relevant parameters in the text and puts forward some views on some issues.