The Paton Welding Journal, 2008, №10

2008 №10 (10)

2008 №10 (02)

---

The Paton Welding Journal, 2008, #10, 5-10 pages

Peculiarities of impact toughness tests of automatic flash butt welded joints on pipes

S.I. Kuchuk-Yatsenko¹, V.L. Kirian¹, B.I. Kazymov¹, I.V. Mirzov¹, V.L. Khomenko²

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²Open Joint Stock Company «Strojtransgaz», Moscow,

Abstract
The effect of mechanical heterogeneity of flash butt welded joints on values of impact toughness KCV, as well as of natural stress raisers in the form of the welding zone defects, resulting from violation of the welding technology, on fracture energy has been studied. It is shown that inadmissible welding defects act as softer stress raisers than a standard sharp notch. Also, it is shown that the KCV values of sound joints in the as-welded state reflect the level of their service properties and high operational reliability
Keywords: automatic flash butt welding, pipelines, mechanical heterogeneity, strength, impact toughness, fracture energy, mechanical notches, natural stress raisers, fractures

References

1. Kuchuk-Yatsenko, S.I. (1964) Continuous flash butt welding of rails. Avtomatich. Svarka, 4, 55-62.
2. Kuchuk-Yatsenko, S.I., Didkovsky, A.V., Krivenko, V.G. et al. (2004) Flash butt welding of rails. Experience of appli cation and prospects of improvement. Put i Putevoe Khozyajstvo, 9, 5-8.
3. Kuchuk-Yatsenko, S.I., Shvets, Yu.V., Dumchev, E.V. et al. (2005) Flash butt welding of rail frogs with rail ends us¬ing an intermediate insert. The Paton Welding J., 1, 2-4.
4. Lebedev, V.K., Tishura, V.I., Chernenko, I.A. et al. (1975) Mechanised line for assembly and welding of carters of high-ca¬pacity transport diesel blocks. Avtomatich. Svarka, 5, 41-44.
5. Kazymov, B.I., Kuchuk-Yatsenko, S.I., Korsunov, V.M. et al. (1972) Flash butt welding of boiler pipes. Ibid., 9, 52-55.
6. Skulsky, Yu.V., Kazymov, B.I. (1981) Flash butt welding of increased-strength drill pipes. Ibid., 2, 59-61.
7. Paton, B.E., Lebedev, V.K., Kuchuk-Yatsenko, S.I. (1979) Complex «Sever-1» for flash butt position welding of large-diameter pipes. Ibid., 11, 41-45.
8. Kuchuk-Yatsenko, S.I., Krivenko, V.G., Sakharnov, V.A. (1986) Flash butt welding of pipelines. Kiev: Naukova Dumka.
9. SP 105-34-96: Rules. Performance of welding operations and quality control of welded joints. Introd. 01.06.96.
10. API 1104: Welding of pipelines and related facilities. ASME boiler and pressure vessel. Publ. 1999.
11. Kuchuk-Yatsenko, S.I., Kirian, V.I., Kazymov, B.I. et al. (2006) Methodology for control of fitness for purpose of flash butt welded joints in pipelines. The Paton Welding J., 10, 2-6.
12. Mazur, I.I., Serafin, O.M., Karpenko, M.P. (1989) Resis¬tance welding of pipelines: ways of improvement. Stroitel- stvo Truboprovodov, 4, 8-11.
13. Makarenko, V.D., Izvekov, Yu.G., Shatilo, S.P. (1987) Brittle fracture resistance of resistance welded joints. Ibid., 7, 25-29.
14. Kuchuk-Yatsenko, S.I. (1976) Continuous flash butt welding. Kiev: Naukova Dumka.
15. Trufyakov, V.I., Mazur, V.G., Zhemchuzhnikov, G.V. et al. (1987) Influence of some defects on strength of flash butt welded joints. Avtomatich. Svarka, 2, 7-9.
16. Girenko, V.S., Dyadin, V.P. (1986) Relationships between impact toughness and fracture mechanics criteria of structural materials and their welded joints. Ibid., 10, 61-62.
17. Kuchuk-Yatsenko, S.I. (1992) Flash butt welding. Kiev: Naukova Dumka.
18. Troitsky, V.A., Radko, V.P., Yushchak, P.T. et al. (1981) Ultrasonic quality control of flash butt welded joints. Avtomatich. Svarka, 4, 38-40.
19. Kuchuk-Yatsenko, S.I., Kazymov, B.I., Radko, V.P. (1996) Integrated monitoring of joints made by automatic flash butt welding. Tekhnich. Diagnostika i Nerazr. Kontrol, 4, 46-50.
20. Kirian, V.I., Semyonov, S.E. (1995) Assessment of fitness for purpose of welded joints on main pipelines made from microalloyed steels. Avtomatich. Svarka, 3, 4-9.

---

Suggested Citation

S.I. Kuchuk-Yatsenko, V.I. Kyrian, B.I. Kazymov, I.V. Mirzov, V.I. Khomenko (2008) Peculiarities of impact toughness tests of automatic flash butt welded joints on pipes. The Paton Welding J., 10, 5-10.

---