为扩大埋弧自动焊工艺在锅炉和容器制造中的应用范围,我厂研制了一套专用于焊接有孔封头内环缝的附件。该附件可装在MZ—1000型埋弧自动焊机上,对锅炉汽包和容器等有孔封头内环缝实行埋弧自动焊。经多年生产实践证明,该附件简便、实用,提高了工效和质量。该附件由导电接杆1、耐磨导丝内管2、紫 In order to expand the application range of submerged arc automatic welding technology in boiler and container manufacturing, our factory has developed a set of accessories specially designed for welding the inner ring seam of the perforated head. The attachment can be installed in MZ-1000 automatic submerged arc welding machine, the boiler drums and containers, such as perforated head of the inner ring seam submerged arc welding. After years of production practice has proved that the annex is simple and practical, improve work efficiency and quality. The attachment by the conductive rod 1, wear-resistant guide wire tube 2, purple