传统的焊接方法是采用双面焊接两块钢板的拼接缝.先将钢板进行焊前处理,然后从一面焊接,随后把拼焊好的钢板翻转,在原焊缝的背面用碳弧气枪铲除部分焊接金属,然后再进行焊接.而大部件的接头焊缝无法翻转,只能由高级焊工进行仰焊.特别是容器,人要钻进容器内焊接,由于操作条件恶劣,因此仰焊后的工序质量难以保证. The traditional welding method is the use of double-sided welding of two steel splicing seam. The first plate before welding, and then welded from one side, then flip a good steel plate, the back of the original weld with carbon arc air gun to eliminate some Welding metal, and then welding. And large parts of the joint weld can not be reversed, only by the senior welder Yang welding. In particular, containers, people want to drill into the container welding, due to poor operating conditions, so after welding process Quality is difficult to guarantee.