B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/150
B23P 6/00 (2006.01) B23P 15/04 (2006.01) F01D 5/00 (2006.01)
Patent
CA 2013077
ABSTRACT "Method of Repairing or Modifying Turbine Blades" A method of repairing or modifying a turbine blade wherein damage or erosion has occurred to the end part of a turbine blade or it is required to remove the end part so as to improve the efficiency of the blade as a whole comprises the steps of removing the damaged end part or a part requiring replacement, securing a new piece of material to the blade which may or may not be partly preformed, and after securing of the new piece of material to the blade and heat treatment processes, subsequently working the new piece of material so that it conforms to the desired shape. The working of the new piece of material only after securement and heat treatment ensures that discontinuities such as lacing wire holes, shroud band apertures, tenons etc., are not left with concentrations of inbuilt stress due to the welding or heat treatment operations and if required the new part may be oversize material which ensures that if slight misalignment occurs between the blade and the new piece of material there is sufficient material to enable the part to be worked to the correct shape.
Fraser Michael James
Hayes Robert Francis
Hendelman Jesse Cyrus
Ridout & Maybee Llp
Turbine Blading Limited
LandOfFree
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