Composition of welding rotator

Welding Manipulator is usually used in welding process.Of course there also are welding rotator and other welding equipment. Turbine low-pressure rotor mass, centrifugal force is large, the use of welding rotator assembly when the impeller rotator operation will occur greater elastic deformation, and therefore need to design a larger assembly interference,.But this will cause a large assembly stress, If using forging rotator, the quality is difficult to guarantee, so the use of segmented forging, welding combination of welding rotator. It is mainly composed of several 

impeller and end shaft welded together.