我厂于1958年开始在大型变压器油箱上采用埋弧自动焊。十几年来经过不断实践,不断改进,初步摸索到了一些规律,并得以推广使用。目前大型变压器油箱的箱壁、箱底、箱盖、盒壁等零部件及箱壁与箱沿、加强铁等主要焊缝,采用埋弧自动焊及半自动焊部分占全部焊缝总长度的60%左右。提高了生产率和产品质量。大型油箱箱底的焊接我厂生产的大型变压器油箱,其箱底厚为16～32毫米,均采用予留间隙填充熔剂自动焊,接缝处只需刨边加工(图1)。对 I plant in 1958 began to use submerged arc welding on a large transformer tank. After more than 10 years of continuous practice, continuous improvement, initially found some rules, and to promote the use. At present, large transformer tank wall, bottom, cover, box wall and other components and wall and box along the tank to strengthen the main iron and other welds, using submerged arc welding and semi-automatic welding of the total weld length of the total length of 60% about. Improve productivity and product quality. Large tank bottom welding I plant a large transformer tank, the bottom of the box thickness of 16 to 32 mm, are used to fill the gap filling flux automatic welding, seaming at the edge only machined (Figure 1). Correct