本文研究內容系围绕球墨铸铁(以下称球铁)的球化与墨化问题,对Mg、Ca、Si、Al、Sn等元素在焊接过程中的球化与孕育作用进行试验研究,借助金相组织观察和机械性能试验,试图探索焊接接头中一些球化与墨化的基本规律。关于含镁量不同的球铁焊接接头的机械性能试验结果,另文报导。 In this paper, the research focuses on the spheroidization and inking of ductile cast iron (hereinafter referred to as ductile iron), and studies the spheroidization and inoculation of Mg, Ca, Si, Al, Sn and other elements in the welding process. Tissue observations and mechanical properties of the experiment, trying to explore some of the basic laws of the ball joint and ink of the welding. On the magnesium content of different ductile iron welding mechanical test results, reported in another article.