本文介绍了磁粉层上二氧化碳冷焊铸铁技术及工艺。分析了二氧化碳冷焊铸铁存在的主要问题,概述了磁粉层上二氧化碳冷焊铸铁的原理,最后对试样用能谱分析测定了第一道焊缝的含镍量,由此算出熔合比,通过这种方法加铝,还可使铝的过渡系数高达60%。这种方法可获得强度高于母材的接头;获得与用铸408冷焊相当的接头加工性;经过实际应用证实,可保证接头的致密性。 This paper introduces the technology and technology of carbon dioxide cold welding cast iron on magnetic powder layer. The main problems of cold welding of carbon dioxide are analyzed. The principle of cold welding carbon dioxide on magnetic powder layer is summarized. Finally, the nickel content of the first weld is measured by energy spectrum analysis, and the fusion ratio is calculated This method of adding aluminum, aluminum can also make the transition factor up to 60%. This method gives a joint of higher strength than that of the base metal. The weldability of the joint obtained by cold welding with cast 408 is obtained. The practical application proves that the compactness of the joint can be ensured.