Abstract In a method and equipment for refurbishing gas turbine blades a portion of each blade extending from the tip is rolled under pressure, the direction of rolling being towards the tip, to effect extension of the tip, after which the extended tip is machined to a predetermined overall length of the blade, the rolling being effected between a pair of rollers, one with a convex profile and the other with a concave profile corresponding to the inside and outside respectively of the aerofoil section of the blade, one roller being fixed and the other roller being movable by pressure applying means towards the fixed roller, a carrier for the blade being rotatable and slidable in a guide aligned with the position of closest approach of the rollers, and driving means being provided for rotating the fixed roller such that its periphery moves through the position of closest approach in a direction towards the guide for the carrier.
A method of refurbishing a gas turbine blade comprising rolling under pressure a portion of the blade extending from the tip, the direction or rolling being towards the tip, to effect extension of the tip, and machining the extended tip to a predetermined overall length of the blade.
Claim 2
Independent Claim
48 words
A method of refurbishing a gas turbine blade comprising rolling under pressure a portion of the blade extending from the tip, the direction or rolling being towards the tip, to effect extension of the tip, and machining the extended tip to a predetermined overall length of the blade.
Claim 3
Dependent Claim
18 words
A method as in claim 1, wherein the rolling pressure is increased as rolling progresses towards the tip.
Claim 4
Dependent Claim
13 words
A method as in claim 1, wherein the rolling pressure is maintained constant.
Claim 5
Dependent Claim
18 words
A method as in claim 1, wherein the rolling pressure is decreased as rolling progresses towards the tip.
Claim 6
Dependent Claim
11 words
A method as in claim 1, wherein the blade is heated.
Claim 7
Dependent Claim
13 words
A method as in claim 5, wherein the blade is heated during rolling.