| 2008 №05 (07) | 2008 №05 (09) |
The Paton Welding Journal, 2008, #5, 35-37 pages
Procedure for repair of blades of titanium alloy VT3-1 by electron beam welding
V.I. Zagornikov
E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
Procedure for repair of complex-configuration titanium blades 1–2 mm thick in the welded joint location by using EBW is considered. The software program was developed for achieving the high-efficiency welding parameters (with speed of up to 50 mm/s) to provide quality weld metal. Refusal from heat treatment outside the welding vacuum chamber to provide the required quality of the titanium blades repaired by EBW is substantiated.
Keywords: electron beam welding, titanium alloy, small thicknesses, repair method, high productivity, welding conditions, metallographic examinations
References
1. Zhivaga, L.I., German, S.I., Levenberg, N.E. et al. (1981) Electron beam welding of steam turbine vanes. In: Proc. of 7th All-Union Conf. on Electron Beam Welding (Kiev, 8-11 Dec., 1980). Kiev: PWI, 37–40.2. German, S.I., Levenberg, N.E., Sitnitsky, A.A. et al. (1981) Application of electron beam welding for recovery of steam turbine blades. Ibid., 40–41.
3. Zhemanyuk, P., Petrik, I. (2001) Main tendencies in development of welding production at Open Joint Stock Company «Motorsich». Problems and prospects. Dvigatel, 3 (May–June), 30–32.
4. Bykov, I., Kresanov, I. (2001) Advanced processes of metallurgical production as a basis of high quality product assurance. Ibid., 28–29.
5. Zhadkevich, M.L., Bondarev, A.A., Zelenin, V.I. et al. (2002) Technology of restoration of gas turbine blades. The Paton Welding J., 2, 52–53.
6. Gajkin, V. (2003) Perfection of engines is determined by perfection of technology. Dvigatel, 6, 11–16.
7. Balabanov, V.A., Kovalev, V.V., Lupyr, V.F. et al. (1981) Comparative investigations of electron beam and arc welding of structures from forged billets of titanium alloy VT3-1. In: Proc. of 7th All-Union Conf. on Electron Beam Welding (Kiev, 8--11 Dec., 1980). Kiev: PWI, 55–58.
8. Ardentov, V.V., Shestakov, A.I., Petrenko, V.R. et al. (1981) Technological peculiarities of producing quality electron beam welds on titanium alloy plates. Ibid., 106–109.
9. (1987) Technology of electron beam welding. Ed. by B.E. Paton. Kiev: Naukova Dumka.
10. Kurochko, R.S., Ioda, A.V., Khorev, M.A. (1982) Heat treatment of welded joints made on alloy VT-23 by electron beam welding. Aviats. Promyshlennost, 5, 58–59.