Open AccessTECHNOLOGY FOR RESTORATION AND REPAIR OF AIRCRAFT ENGINE PARTS
Author(s) -
Serhii Nyzhnyk,
Ihor Zorik,
Kostiantyn Danko,
Justas Nugaras
Publication year - 2021
Publication title -
aviation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 13
eISSN - 1822-4180
pISSN - 1648-7788
DOI - 10.3846/aviation.2021.15924
Subject(s) - gas compressor , detonation , materials science , mechanical engineering , deposition (geology) , substrate (aquarium) , service life , titanium , brazing , turbine blade , metallurgy , engineering , alloy , automotive engineering , turbine , geology , paleontology , chemistry , oceanography , organic chemistry , sediment , explosive material
Problems of increasing the service life of compressor blades of aircraft gas turbine engines using detonation spraying technology are considered. The simulation of the parameters of the velocity and temperature of the particles of the sprayed material in the barrel of the detonation unit and in the flooded space to the substrate was carried out, followed by the choice of the optimal technological parameters of the spraying process. The control system of the detonation unit has been modernized. An experiment was carried out on the deposition of the Al2O3 coatings on the samples of a substrate made of titanium alloy VT3-1. Based on the results of the experiment, technological recommendations were developed concerning both the parameters of the spraying process and the parameters of the preparation of the substrate surface before spraying. The equipment for brazing the blades of the guide vanes is described and a device for spraying coatings on the end surfaces of the compressor blades is proposed. Thus, a complex technology has been developed for restoring the end surfaces of titanium alloy compressor blades by deposition of Al2O3 coatings.