B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/150
B23P 15/02 (2006.01) B22F 7/06 (2006.01) B23K 35/02 (2006.01) B23P 6/00 (2006.01) F01D 5/00 (2006.01)
Patent
CA 1285126
Abstract Turbine Vane Nozzle Reclassification A gas turbine vane (1) is subject to distortion and wear during operation or repair which results in an increase in the spacing between successive vanes (6 and 7) which define nozzle gas flow areas (8 and 9). During refurbishment, the nozzle spacing must he returned to the original dimension to insure optimum turbine performance. A build up of alloy in the wear area is accomplished by controllably applying layers of a tape (12) of uniform thickness to the vane. The tape includes a mixture of a binder and an alloy powder, which is compatible with the substrate alloy, with the mixture formed into a sheet of uniform thickness and having an adhesive backinq. After applying the tape in layers to a desired thickness, the vane is heated to a temperature at which the binder and adhesive decompose and the alloy in the tape diffusion bonds with the substrate alloy. Utilization of this process reduces the cost of refurbishing, used turbine vanes and avoids hot forminq or bending processes which could damaqe the vanes.
547283
Arrigoni John Peter
Draghi Peter Jon
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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