Patent ID: 6115917
Filing Date: 2000-09-12
Classification: B23K,B23P,C21D,F01D,F05D,G01N,Y10T

Abstract:
A method of repairing a turbine rotor wheel in a single position repair device, comprising the steps of:disposing the rotor undergoing repair in the device with the rotor axis lying horizontal;rotating the rotor in the device about the horizontal axis; andwhile rotating the rotor about said horizontal axis and without displacing the rotor from the device, (a) removing an annular damaged dovetail from the turbine wheel, leaving a reduced diameter turbine wheel body, (b) welding a ring about the turbine wheel body in place of the removed damaged dovetail, (c) stress-relieving the rotor by applying heat, and (d) forming a dovetail in the ring for receiving turbine bucket dovetails.