“The Paton Welding Journal” #08_2023 will be freely distributed from 11 to 15 September during the exhibition SCHWEISSEN & SCHNEIDEN 2023, Messe Essen, Norbertstrasse 2, Essen, Germany at the stand of the Paton Welding Institute: Hall 8 Stand 8B29.1.
You can also order this issue of the Journal in electronic form for free.
Send applications to E-mail: firstname.lastname@example.org
Contents of the issue
Abstract It is a necessary to specify the dependencies of deposited metal shaping due to the need of 5–15 mm height increase of the dimensions of surfacing-repaired damaged areas of blade edges of aircraft GTE of high-temperature nickel alloys in microplasma bead surfacing on narrow substrate of less than 3 mm. A range of change of the process energy indices in «effective heat power of arc–heat input–cross-section area of deposited bead» system was investigated for conditions of corresponding single-layer surfacing, and effectiveness of process regulation of deposited layer cross-section was evaluated. It is determined that heat input change in 100–1600 J/mm range is the most effective regulation of cross-section area of the deposited bead under conditions of base metal limited penetration depth. It is assumed that the determined process relationship between heat input energy, height and cross-section area of the deposited bead will promote for formation of the additional criteria preventing crack formation in the «base–deposited metal» welded joint in repair of the parts of aircraft engines of high-temperature nickel alloys using multi-layer microplasma powder surfacing. 18 Ref., 4 Tables, 8 Figures.
Keywords: microplasma powder surfacing, high-temperature nickel alloy and heat-resistant cobalt alloy, narrow substrate, effective heat power of arc, heat input, thermal efficiency, cross-section area of deposited bead
Peremilovsky, I.A., Gejchenko, V.S., Frumin, I.I. (1976) Surfacing repair of turbine blades of aircraft engines. Svarka, 5, 54–56.
Petrik, I.A., Peremilovsky, I.A. (2001) Further development of technology for hardening of flange platform faces of turbine blades from high-temperature alloys. Tekhnologicheskie Sistemy, 3, 90–92.
Yarovytsyn, O.V. (2009) Microplasma powder surfacing of high-temperature nickel alloys containing 45–65 % of γ-phase: Syn. of Thesis for Cand. of Techn. Sci. Degree. Kiev: PWI.
(2010) Technological Seminar Deloro Stellite in Zaporozhie. The Paton Welding J., 1, 46–49.
Yushchenko, K.A., Savchenko, V.S., Yarovitsyn, A.V. et al. (2010) Development of the technology for repair microplasma powder cladding of flange platform faces of aircraft engine high-pressure turbine blades. Ibid., 8, 21–24.
Yushchenko, K.A., Yarovitsyn, A.V. (2012) Improvement of technology of repair of upper flange platform faces of aircraft engine blades. In: Complex Program of NASU on Problems of Service Life and Service Safety of Constructions, Structures and Machines. on Results of 2010–2012. Kiev: PWI.
Zhemanyuk, P.D., Petrik, I.A., Chigilejchik, S.L. (2015) Experience of introduction of the technology of reconditioning microplasma powder surfacing at repair of high-pressure turbine blades in batch production. The Paton Welding J., 8, 39–42. https://doi.org/10.15407/tpwj2015.08.08
Boguslaev, V.A., Muravchenko, V.M., Zhemanyuk, P.D. et al. (2003) Technological support of service characteristics of gas turbine engine parts. Turbine blades. Pt 2. Zaporozhie: JSC Motor Sich.
Sorokin, L.I., Lukin, V.I., Bagdasarov, Yu.S. (1997) Weldability of cast high-temperature alloys of ZhS6 type. Proizvodstvo, 6, 12–17.
Kondratyuk, E.V., Leontiev, V.A., Shusha, A.V. et al. (2013) Profile deep grinding of gas turbine engine parts. Promyshlennost v Fokuse, 5, 22–24.
Yushchenko, K.A., Yarovitsyn, A.V., Khrushchov, G.D. et al. (2015) Analysis of process of bead shaping in cladding on narrow substrate. The Paton Welding J., 9, 20–27. https://doi.org/10.15407/tpwj2015.09.03