Patent ID: 7644498

Claim:
A method of modifying a shroud band segment of a turbine moving blade, the shroud band segment having an initial coupling geometry for coupling with a further shroud band segment adjacent to the shroud band segment, the coupling geometry having an initial coupling angle of the shroud band segment relative to a circumferential direction of the turbine, the method comprising: calculating a modified coupling geometry for the shroud band segment, the modified geometry including a modified coupling angle of the shroud band segment relative to the circumferential direction; creating at least one of a removal zone and an application zone, wherein the creating of the removal zone includes removing a first amount of shroud band material from a side face of the shroud band segment situated outside the modified coupling geometry and wherein the creating of the application zone includes applying a second amount of an additional material to the side face of the shroud band segment within the modified coupling geometry; and reworking at least one of the removal and application zones, wherein the creating of the at least one of the removal zone and the application zone and the reworking results in the shroud band segment having the modified coupling angle, wherein the difference between the initial coupling angle and the modified coupling angle is at least ±5°.