The end wall is an important part of the aluminum alloy car body in High-speed EMU. It has a complex construction

amount of accessories and large quantity of welding

all of which may induce the large welding deformation. Welding deformation is caused by uneven heating and cooling during welding. However

the deformation of aluminum alloy is large

which affects the manufacture and performance of welded structure. In this paper

the end wall of a standard EMU is taken as the research object

by adopting the appropriate tooling optimization

assembly process and reasonable welding sequence in the production and manufacture of the end wall

its welding deformation was well controlled

and so its flatness and profile. This reduced the intensity of working adjustment on end wall

improved production efficiency

and met the requirement of mass production. Moreover

the control method in this paper has a good reference significance for other EMU end wall manufacture

and has good value in popularizing.