Integral blisk is the key part of aero-engine with slender blade

large torque angle

large erosion removal quantity between blade channels

weak structure strength. It is difficult to manufacture due to its high-temperature alloy material. The commonly-used milling machining method for blade channels has many short-comings

such as

low machining efficiency

high deformation rate

and low machining quality of parts. In order to increase manufacturing efficiency and quality

and to decrease manufacturing cost of the blade channels of integral blisk

we analyzed the characteristic of the blade channel structure and machining technique

and proposed a new machining technique including wire-cut

electrical discharge machining (EDM) forming

and fine milling

which is a total novel technology scheme with characteristics of micro-stress

low cost

high quality

in brief

electro-electro-milling technology scheme. We also designed multi-axis wire-cutting technique and special wiring devices used for inside-and-outside outline cutting. The problems such as low quality

low efficiency have been resolved through normalizing process parameters in clamping and positioning

electrical parameters

cutting path. Finally

the effectiveness (increasing the machining quality and efficiency

lowering the machining costs) of the proposed technology scheme has been verified through typical parts machining.