摘要
水下管道焊接因受水的影响而具有可见度差 ,焊缝含氢量高 ,冷却速度快 ,电弧电压高和连续作业困难等特点。为消除水的不利影响 ,研究出多种解决方案 :水下专用焊条和药芯焊丝 ;适合局部干法焊接的排水罩 ;机械化、自动化、智能化的焊接系统。研究结果表明 :湿法水下焊接仅适用于不重要的场合 ;局部干法水下焊接经济可靠 ;干法水下焊接成本高、质量好。
Because of influence of water,underwater welding has some characteristics:bad visibility;high hydrogen content in welding seam;speedy cooling speed;high electric arc voltage;difficult continuous welding etc.Some methods are studied for overcoming problems:underwater electrode and self-shield flux-cored wire;chamber for local dry method underwater welding;welding system owning mechanization,automatization,intelligence.The results show:wet method underwater welding is applied in unimportant field;dry method underwater welding is costly and top-quality;local dry method underwater welding is economic and reliable.Eventually,the further development trend of pipeline underwater welding is suggested.
出处
《焊管》
2003年第5期6-10,61,共5页
Welded Pipe and Tube
关键词
管道
水下焊接
湿法水下焊接
局部干法水下焊接
干法水下焊接
words pipeline underwater welding wet method underwater welding dry method underwater welding local dry method underwater welding
