Patent ID: 8813331
Filing Date: 2014-08-26
Classification: F01D,F05D,Y10T

Abstract:
1. A process of preparing a turbine rotor wheel, the process comprising: providing the turbine rotor wheel having a dovetail slot, a cooling slot, and a dovetail acute corner formed by the dovetail slot and the cooling slot; removing strained material and a stress region from the dovetail acute corner at a predetermined angle above parallel from the dovetail slot, to form a predetermined shape, and to a predetermined depth; wherein the removing is by a repair tool, the repair tool including a guide mechanism for cutting only along one angle with the turbine rotor wheel positioned in a fixed and single orientation; wherein the strained material and the stress region from the dovetail acute corner is removed without removal of the turbine wheel from a turbine by the repair tool including a securing mechanism for engaging and securing the tool to a turbine rotor wheel having the dovetail acute corner formed by the dovetail slot and the cooling slot, the guide mechanism for directing removal along the predetermined angle in a substantially linear direction, and a stop mechanism for limiting removal to the predetermined depth, wherein the guide mechanism and the stop mechanism permit removal of the stress region from the dovetail acute corner of the turbine rotor wheel; wherein the securing mechanism mounts as a slide into the dovetail slot.