二氧化碳气体保护焊是一种先进的焊接方法;它具有效率高、质量好、成本低、变形小、无渣、明弧、易掌握、能全位置焊接、易于实现自动焊等优点,所以在生产中得到日益广泛的应用。这种焊接方法在国外已有二十多年历史,我国从试验到用于生产也已有十余年。我国的二氧化碳气体保护焊,最早是从1958年开始, Carbon dioxide gas shielded welding is an advanced welding method; it has the advantages of high efficiency, good quality, low cost, small deformation, no slag, bright arc, easy to grasp, full position welding, easy to realize automatic welding, In the increasingly wide range of applications. This welding method has been in foreign countries for more than 20 years and has been used in production for more than ten years in our country. China’s carbon dioxide gas shielded welding, as early as 1958 from the beginning,