| 摘要 |
FIELD: methods of restoring worn surfaces of parts of gas-turbine engines operating in sliding-friction pairs, namely in civil and aviation industry branches. SUBSTANCE: method of restoring sectors of split ring of guide vane including preparation of part surface for gas-thermic deposition; gas-thermic deposition of coating on nickel base with thickness 0.5-2.5 mm and subsequent flashing it by focused scanning laser beam in inert gas medium also comprises steps providing increased wear resistance and lapping ability of pair with restored surface namely subjecting to laser beam flashing edges of part with use of beam power consisting 2-3.5 kW, with part motion speed 500-700 mm/min, scanning amplitude 3-8 mm, diameter of focused beam 0.5-2.5 mm; directing scanning beam in such a way that its symmetry axis on surface of part was parallel with its edge and spaced from it by distance being no more than 0.2 of amplitude of scanning beam. Such method allows to repair parts that had not been subjected to repairing before and to increase significantly their service life period. EFFECT: enhanced quality of restored parts. |
