Avtomaticheskaya Svarka (Automatic Welding), #6, 2020, pp. 17-22
Structural condition and fatigue damageability of welded joints of steam pipelines
V.V. Dmitrik, A.K. Tsaryuk, O.S. Garashchenko, T.O. Sirenko
National Technical University «Kharkiv Polytechnic Institute», 2, Kirpichova Str., 61002, Kharkiv, Ukraine.
At present time, a number of HPP power units having operated about 250,000 h. in a relatively stationary operating condition,
changed to a maneuver mode. This transition caused a need in the studying damageability of their equipment according to the
mechanism of fatigue and, above all, welded joints of steam pipelines of heat-resistant steels, operating under the conditions
of creep. A further increase in fatigue damageability causes an increase in the requirements to the initial structure of both the
welded joints being produced as well as the parts to be repaired using welding. 14 Ref., 12 Fig.
metal damageability; welded joints; fatigue cracks; structural condition; conditions of creep, dislocations
1. Dimić, I., Arsić, M., Medjo, B. et al. (2013) Effect of welded
joint imperfection on the integrity of pipe elbows subjected
to internal pressure. Technical Gazette, 20, 2, 285–290.
2. Lazić, V., Aleksandrović, S., Arsić, D. et al. (2016) The influence of temperature on mechanical properties of the base
material and welded joint made of steel S690QL. Metalurgija,
55, 2, 213–216.
3. Katavić, B, Jegdić, B. (2007) Analysis of damages on water
boiler shield pipes. Welding and welded structures, 4, 123–130.
4. Khromchenko, F.A. (2002) Residual life of welded joints of
steam pipelines. Moscow, Mashinostroenie [in Russian].
5. Trukhnij, A.D., Korzh, D.D., Kochetov, A.A., Rezinskikh,
V.F. (1986) Investigation of low-cycle fatigue of steels
34KhM1A and EI415 after long-time operation in steam
turbines. Teploenergetika, 3, 32–35 [in Russian].
6. Dityashev, B.D., Popov, A.B. (2007) Complex approach to determination of residual life of steam pipelines of thermal power stations. Ibid., 2, 21-25 [in Russian]. https://doi.org/10.1134/S004060150702005X
7. Dmitrik, V.V., Baumer, V.N. (2007) Carbide phases and damageability of welded joints at long-time operation. Metallofizika. Novejshie Tekhnologii, 2(7), 937-947 [in Russian].
8. Glushko, A.V., Dmitrik, V.V., Sirenko, T.A. (2018) Creep of welded joints of steam pipelines. Ibid., 40(5), 683-700 [in Russian].
9. Lazić, V., Arsić, D., Nikolić et al. (2016) Selection and analysis of material for boiler pipes in a steam plant. Procedia Engineering, 149, 216-223. doi:10.1016/j.proeng.2016.06.659. https://doi.org/10.1016/j.proeng.2016.06.659
10. Ivanova, V.S. (1979) Fracture of metals. Moscow, Mashinostroenie
11. (2003) RD 10-577-03. Model guidelines for inspection of
metal and prolongation of the service life of main components
of boilers, turbines, and piping systems of thermal power
stations. Moscow, NPO Prombezopasnost [in Russian].
12. (1987) МU 34-70-161-87. Guidelines on metallographic
analysis and examination of damage causes of steam
pipeline welded joints from steels 12Kh1MF and 15Kh1M1F
of thermal power stations. Moscow, VTI [in Russian].
13. Dmitrik,V.V., Glushko ,A.V., Tsaryk, A.K. (2019) Rekrystallization
in the metal of welding joints of steam trucks. Problems
of atomic science and technology, 5 (123), 49–52.
14. Dmitrik, V.V., Sirenko,T.A. (2012) To the mechanism of diffusion
of chromium and molybdenum in the metal of welded
joints of steam pipelines. The Paton Welding J., 10, 20-24.
Advertising in this issue: