一台电站锅炉,除了汽包,集箱,管子等受压构件以外,其他非受压的钢结构件的部、组件也相当多,其钢材总重量占整台锅炉～50％以上,因此对于这些钢结构件的焊接工作量也是相当之大的,如何提高其焊接生产的效率也是我们的工作重点之一。对这些钢结构件,除了采用埋弧自动焊以外,CO_2气体保护焊也是一种较好的方式,CO_2气体保护焊生产率高,成本 A power station boiler, in addition to steam drums, header, pipe and other compression components, other non-pressure steel structure of the Ministry, the components are quite large, the total weight of the steel accounts for more than 50% of the entire boiler, so for The welding work load of these steel structure parts is also considerable, and how to improve the efficiency of welding production is also one of the focuses of our work. For these steel structures, in addition to using submerged arc welding, CO 2 gas shielded welding is also a better way, CO 2 gas shielded welding productivity, cost