一、概述我厂于一九六六年七月在生产中正式应用了自制的铸铁芯(含钙)电弧冷焊焊条,两年来焊补了大量的各类大中小型的铸件毛坯和精粗加工后出现的缺陷。实践证明,采用这种焊条已部分或基本地代替了普通铸铁焊条的热焊和基本的取缔了蒙乃尔焊条。由于焊缝金属是灰口铸铁,又有着良好的加工性,尤其是颜色,机械性能与铸件基本一致,因此,即使有了蒙乃尔焊条,也不愿用它了。 I. Overview I plant in July 1966 in the production of formal application of the homemade cast iron core (calcium) arc cold welding electrodes, two years to weld a large number of large and medium-sized castings rough and rough Defects after processing. Practice has proved that the use of such electrodes has been partially or basically replaced the ordinary cast iron welding electrodes and the basic banned Monel welding rod. As the weld metal is gray cast iron, but also has good workability, especially color, mechanical properties and castings are basically the same, so even with the Monel electrode, do not want to use it.