In this paper the HAZ weld thermal cycles of the welding by both sides submerged arcweldedsteelpipe were reproduced by the dislocation overlap weld method.
采用焊道错位叠加方法，再现了螺旋管双面埋弧焊制管过程中内、外焊焊接热影响区(HAZ)的焊接热循环。
2
In this paper, the reform process of the welding equipment and the choice of welding parameter about CO2 enclosed-arc welding as skelp end-welding in weldedsteelpipe mill are introduced.
介绍了管子、带钢接头co 2气体保护自动焊焊接设备的改造过程及工艺参数选择。
3
The results of batch manufacture grade X80 spiral and longitudinal submerged arcweldedpipe all meet the pipe technical conations required by"Grade X80 Pipeline Steel Pipe Application Project";