CO_2气体保护焊,是一种生产率高、成本低、质量好的焊接方法.由于它克服了熔剂层下自动焊所固有的弱点(熔剂回收的麻烦及只限于平焊位置等),为全位置半自动焊接开辟了道路,所以近年来在国内外许多部门中已得到了迅速的推广与应用.我们对这项工艺进行了某些试验,现提供大家参考,并希提出批评指正. CO_2 gas shielded welding is a high productivity, low cost, good quality welding method.Because it overcomes the inherent weakness of automatic welding under the flux layer (flux recovery trouble and limited to flat welding position, etc.), for the full location Semi-automatic welding opened up the road, so in recent years in many departments both at home and abroad have been rapidly promoted and applied. We conducted some experiments on this technology, are for your reference, and hope that the criticism and correction.