管对接斜45°固定焊是焊工技能竞赛中难度较大的项目,通常采用单面焊双面成型技术。竞赛选手大多根据自身的特点及理解进行焊接工艺的编排,但是在日常培训中,焊件探伤评价时经常发现根部存在气孔及条渣。因此,根据项目特点设计了两组焊接工艺实验,以期优化管对接斜45°固定焊焊接工艺,进一步提升焊接质量。 Pipe butt oblique 45 ° fixed welding welder skills competition is more difficult projects, usually using single-sided welding double-sided molding technology. Most competition players according to their own characteristics and understanding of the welding process layout, but in daily training, weldment flaw detection often found at the root of stomata and slag. Therefore, two sets of welding process experiments were designed according to the characteristics of the project, with a view to optimizing the welding process of the butted 45 ° fixed welding and further improving the welding quality.