Avtomaticheskaya Svarka (Automatic Welding), #8, 2018, pp. 39-44
Repair of large-size blades of fan of gas-turbine engine
I. B. Markov, I. A. Petrik, A. G. Seliverstov, Yu. A. Marchenko
JSC «Motor Sich», 15 Motorostroiteley Ave., Zaporozhye, 69068. E-mail: email@example.com
Paper presents the results of works on restoration of a damaged area of blade of gas turbine engine fan by means of welding-up of a fragment by electron-beam welding method. An endurance limit (σ-1
) was determined for fan blades of D-36 engine with 16-65·103
N thrust repaired by this technology. Metallographic examination of the blades with fragment welding-up after fatigue tests was carried out. Perspective directions on increase of the endurance limit of repair fan blades were proposed. 8 Ref., 2 Tabl., 9 Fig.
Keywords: electron beam welding, titanium alloy, fan blades, fragment welding-up, heat treatment, structure, endurance limit
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