Patent ID: 9073155
Filing Date: 2015-07-07
Classification: B23K,B23P,F01D,F05D,Y02T,Y10T

Abstract:
1. A method of fabricating a turbine engine drum, the drum including at least two rotor disks on a common axis, each of the two disks having slots in its outer periphery for receiving blade roots, the method comprising: positioning the two disks on the common axis spaced apart from each other and in a predetermined angular position relative to each other; placing a wall forming a body of revolution between the two disks coaxially about the common axis; driving the wall in rotation about its axis while the two disks are in contact with the wall; after the driving the wall, moving the disks axially towards the wall while maintaining the disks in the predetermined angular position relative to each other so as to put the disks into contact with ends of the wall and thereby weld the disks to the wall by inertial friction; and the welding comprises a first stage in which the disks rub against the ends of the wall during a time needed for the weld zones to reach their forging temperature, and a second stage in which axial thrust is applied to each of the disks to perform the welding, thereby forming the turbine engine drum.