REPAIRMENT OF END PART OF TURBINE COMPONENT, USING COMPOSITE PRE-SINTERED MOLD OF BORON-DOPED BASE Russian patent published in 2022 - IPC F01D5/00 B23P6/00 

FIELD: turbines.

SUBSTANCE: present invention relates to a method for repairment of section (22) of an end part of turbine blade (10), having a structural defect. The method includes areas of a damaged section with a structural defect at section (22) of the end part and provision of pre-sintered mold (60) including first section (62) with the first composition and second section (64) with the second composition. Pre-sintered mold (60) is configured for coupling with an upper surface of a remained section of turbine blade (10). Pre-sintered mold (60) contains superalloy material and solder material, and it is subjected to a soldering process to melt solder material and fill the structural defect. First section (62) can be a bandage shelf of an end part of the blade, and second section (64) can be a section with whistling profiling. Boron is used in solder material to decrease a temperature, at which soldering is performed.

EFFECT: elimination of the need for welding repairment and elimination of the need for excessive heat treatment, need for qualified welders, and cracks in an area of heat impact.

18 cl, 5 dwg