Welding process of ship sectioning subassembly part

The invention relates to a welding process of ship sectioning subassembly parts. The welding process is characterized by comprising the following specific technological steps that S1, assembling of the subassembly parts is performed; S2, setting of a portal frame is performed; S3, positioning of a welding target is performed; S4, laser system initial positioning is performed; S5, welding by a robot arm is performed; S6, laser system continuous positioning is performed; and S7, continuous welding by the robot arm is performed. According to the welding process, rib plates and other components ofthe sectioning subassembly parts are assembled and positioned firstly, electric welding is performed on the assembled rib plates and other components according to the welding process; the implementation of the process means that as long as the assembly of the rib plates and other components of the sectioning subassembly parts is completed, manual work does not need to be performed for welding, all the large-scale section