单面焊双面成形的操作技术已被广大焊工所掌握。但也有相当数量的持证焊工上岗操作时,由于坡口角度、根部间隙、钝边大小不如考试工件加工严格,对其管子的水平、斜45°固定焊口缺陷分析,普遍存在未焊透、塌腰等现象,有时还有气孔(缩孔)或夹渣等缺陷。下面就如何消除上述通病,灵活运用“半击穿”、“击穿”、“不击穿”和“多点”焊法进行介绍。一、半击穿焊法 Single-sided welding double-sided forming operation technology has been mastered by the majority of welders. But there are also a considerable number of licensed welders appointment operation, due to bevel angle, root clearance, blunt edge size as the processing of the workpiece is strictly tested, the level of its pipes, inclined 45 ° fixed weld defects analysis, ubiquitous penetration, Tumbling and other phenomena, and sometimes pores (shrinkage) or slag defects. Below on how to eliminate the common problems, flexible use of “half-breakdown”, “breakdown”, “no breakdown” and “more” welding method to introduce. First, semi-wear welding method