在现代的各种型式飞机中,发动机架、起落架构件、尾轮叉、收放作动筒、油箱、冷气瓶、动力装置的排气管等都采用焊接结构。有些飞机的机身骨架、翼梁、发动机短舱以及飞机部件的其他若干组合件也采用焊接结构。这些焊接结构的工艺准备工作及制造工作具有很大的劳动量,构造复杂,对质量要求也极严格;因此,焊接结构的工艺性好坏对于生产有很重要的意义。 In the modern various types of aircraft, the engine frame, landing gear components, tail fork, retractable actuator, fuel tanks, air conditioners, power plant exhaust pipe and so on are welded structure. Some aircraft fuselage skeletons, spars, nacelles, and several other aircraft parts assembly also uses a welded structure. These welding structure process preparation and manufacturing work has a lot of labor, complex structure, the quality requirements are also very strict; therefore, the welding structure of the good or bad for the production of great significance.