METHOD TO MANUFACTURE BLADED INTEGRATED DISK OF GAS TURBINE ENGINE FROM BLANK WITH DEFECTS DETECTED DURING ITS MACHINING Russian patent published in 2017 - IPC B23P6/00 F01D5/02 B23C3/18 

FIELD: transportation; aviation.

SUBSTANCE: method includes serial roughing machining with end cutters of upper, middle and end sections of blades and their further finishing. At the same time after roughing finishing of upper and middle sections of blades they detect defects on their surface. Sections of blades with detected defects are removed. Upper and middle sections of the blades are recovered. To recover upper and middle sections of blades at the place of their removal, a ledge is formed for blade root sections on a circular stock. A process base plate is manufactured in the form of a mount with a through cut, matching the ledge contour for blade root sections. Also a structural part is manufactured, contact plane of which is commensurate with the contact surface of the mount, and its volume complies with the volume of removed upper and middle sections of blades. With the help of electron beam bonding, the ledge for blade root sections, the mount and the structural part are connected to each other. Further roughing finishing is performed on recovered blade sections.

EFFECT: invention makes it possible to expand process capabilities to manufacture a bladed integrated disk of a gas turbine engine due to elimination of defects in process of its manufacturing.

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