Burn through is the main problem of longitudinal seam welding of ultra-thin tube with small diameter. Assembly of the joint and welding technology are the key to solve the problem.
小直径超薄壁管纵缝焊接的主要问题是烧穿，解决这个问题的关键是严格控制焊接接头的装配质量及焊接工艺。
The structure and dimension of welding pin are the main factors which affects the flow direction of the plastic metal in FSW zone and the quality of the FSW seam.
焊接过程中搅拌焊针的结构形状是影响焊缝区塑性软化材料流动方式的主要因素，从而影响焊缝的成型质量。
Welding seam should be numbered according to pipeline medium set, in principle, main pipe prior to branch pipe.
焊缝编号应根据管线介质流向进行编号，原则上应先主管后支管。
According to the problem that the welding seam of the main winch drum structure is easy to crack, this article analyzes the cause and puts forward efficient measures of reducing it's ouurrence.
根据主井绞车滚筒结构的开焊情况，分析了开焊的因素，提出了减少开焊的措施。
At last, the fatigue crack in the experiment and the main influential factor of fatigue strength of fillet welding seam was studied.
最后，对疲劳试验中有关裂纹以及影响焊缝疲劳强度的主要原因进行了探讨。
The paper briefly analyses the main cause of crack of welding seam on an evaporation tank and proposes the precautionary measures for preventing such kind of accident on pressure vessels.
简要分析了一台蒸发罐发生焊缝开裂的主要原因，提出防止此类压力容器事故的预防措施。
The paper briefly analyses the main cause of crack of welding seam on an evaporation tank and proposes the precautionary measures for preventing such kind of accident on pressure vessels.
简要分析了一台蒸发罐发生焊缝开裂的主要原因，提出防止此类压力容器事故的预防措施。
应用推荐