Method of forming a trailing edge on a steam turbine blade...

Details Method of forming a trailing edge on a steam turbine blade... Method of forming a trailing edge on a steam turbine blade...

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/14 (2006.01) B23K 20/12 (2006.01) B23P 15/04 (2006.01) F01D 5/00 (2006.01)

Patent

CA 2073547

56,703 ABSTRACT A steam turbine blade is provided having a trailing edge portion formed from an erosion resistant material deposited on the blade airfoil by a friction surfacing method. According to the method, a rotating consumable rod of erosion resistant material is placed in contact under axial load against a bonding surface formed on the airfoil, thereby causing a portion of the rod adjacent the bonding surface to be plasticized. The rod then traverses the surface linearly leaving in it wake a layer of erosion resistant material bonded to the airfoil by a high quality metallurgical bond. The layer is then ground to form the smooth contour desired for the trailing edge.

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