METHOD TO RECONDITION STEAM TURBINE VANES FROM ALLOYED STEELS Russian patent published in 2011 - IPC B23P6/00 C21D6/00 C22F1/18 

FIELD: process engineering.

SUBSTANCE: invention relates to power engineering and may be used in reconditioning or repair of steam turbine vanes. Proposed method comprises removal and reconditioning of vane worn-out section, vane machining, producing protective stellite strips on lip and thermal treatment. Reconditioning comprises building up by stable austenitic nickel and/or cobalt alloys and alloy of nickel with cobalt. Note here that machining aims at recovering vane lip geometry by producing recesses on built-up section for stellite strips. Note also that shape, sizes and arrangement of said recesses comply with those of said protective strips.

EFFECT: longer life, higher hardness.

35 cl, 1 dwg, 1 ex, 1 tbl