Abstract: To solve the problems of deformation, burning-through and burring defects of nozzle assembly of emergency evacuation slide during the conventional manual argon tungsten arc welding, the technicians made analysis and research on the processing technology of nozzle assembly. By screening tests of various processing techniques, the processing methods such as high-frequency pulse arc welding and vacuum brazing are determined.Thus, the welding quality of nozzle assembly are guaranteed and the problems during the model development are solved. Meanwhile, the processing methods under different production demand are determined through the comparative analysis, which provides a solution for the high-quality manufacturing of slide nozzle assembly.