Electrochemical stripping of turbine blades

Details Electrochemical stripping of turbine blades Electrochemical stripping of turbine blades

C - Chemistry, Metallurgy

25

F

C25F 5/00 (2006.01) C25F 7/00 (2006.01)

Patent

CA 2359342

A process is provided to strip a metallic coating from a turbine blade comprising attaching the blade to a positive lead from a power supply, submersing a portion of the blade with a metallic coating to be stripped into a bath of acidic electro stripping solution, said bath containing a negative lead from a power supply attached to a conductive grid; and providing a current to the blade in the bath for a period of time effective to remove the coating on the portion of the blade.

L'invention concerne un procédé permettant de décaper le revêtement métallique d'une aube de turbine. Ce procédé consiste à attacher l'aube au plus d'une alimentation électrique, à prendre une partie de l'aube munie du revêtement métallique à décaper et à immerger dans le bain d'une solution de décapage électro-acide. Ledit bain contient le moins d'une alimentation électrique attaché à une grille conductrice. Enfin, on envoie du courant à l'aube dans le bain pendant une durée efficace pour retirer le revêtement sur la partie de l'aube.

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