The invention relates to a manufacturing process of an ultra-long blade complex curved surface integral
impeller made of an aluminum
alloy material. The manufacturing process includes the specific steps of preparing materials, conducting rough
machining on the profile of an
impeller workblank, conducting heat treatment, conducting
artificial aging, conducting semifinishing on the profile of the
impeller, conducting ice-
cold treatment, drilling a positioning hole, conducting five-axis linkage rough
machining, conducting
natural aging, conducting five-axis linkage finish
machining, conducting clamp treatment, conducting
numerical control turning, conducting linear
cutting, conducting clamp treatment and conducting dynamic balancing. By the adoption of the process technology method, the ultra-long blade complex curved surface integral impeller made of the aluminum
alloy material is manufactured, the blade shape of the ultra-long blade complex curved surface integral impeller made of the aluminum
alloy material is complete, deformation is small, the blade lines of the blade faces of blades are smooth,
mass reduction in dynamic balancing is small, and the yield is high; and
process improvement in the integral impeller part of the structure is achieved, product quality is guaranteed effectively, the design requirement is met effectively, the stability of
production quality is improved, and the reliability of products is guaranteed.