As a key force part in a civil new typed aircraft engine

the inlet case consists of welding assemblies of outlet case

inlet one and supporting panel. Distortion during the welding manufacturing and welding recovery problem has become the critical difficulty which limits the normal use of parts. In the essay

some methods

such as welding parameters optimization

welding process control refinement

improving welding fixtures

heat-treatment shaping

local recovery and heat-treatment technology

are promoted to settle the difficulty of part development

and largely reduced the parts during welding distorting

realizing welding distortion control of inlet case assembly. This paper has important role on complicated welding inlet case processing ability improvement for equivalent structure parts welding and distortion control

and raised typical processing technology to research and promote for the complicated welding inlet case on the aircraft engine.