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2000 №01 (02) 2000 №01 (04)

The Paton Welding Journal 2000 #01
The Paton Welding Journal, 2000, #1, 20-22 pages

Preheating and postweld heating in welding high-strength alloyed steels

L.I. Mikhoduj, S.B. Kasatkin

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The investigation showed that in welding of microalloyed steels it is necessary to limit the preheating temperature Tmax ~80-130 oC and, when possible, to decrease the duration of effect of this temperature on welded joints. The postweld heating can be eliminated from the technological process.
Keywords: high-strength steels, carbonitride strengthening, preheating and postweld heating, ageing, X-ray analysis, delayed fracture

References

1. Grishchenko, L.V., Kozlov, A.V., Fastovsky, V.M. (1981) Calculation of duration of preheating butt joint for welding. Problemy sudostroyeniya. Welding, 31, 40 - 47. 2. Rak, 1., Glina, Y. (1986) A case of preheat cracking of HSLA steel. IIW 1X-1430-86.
3. Kozlov, R.A. (1969) Hydrogen in welding hull steels. Leningrad: Sudostroyeniye.
4. Musiyachenko, V.F. (1983) Weldability and technology of highstrength steel welding. Kiev: Naukova Dumka.
5. Babaskin, Yu.Z., Shpitsyn, Yu.Ya., Aftandilyants, E.G. (1987) Sparsely-alloyed steels. Kiev: Naukova Dumka.
6. Hrivnyak, I. (1984) Weldability of steels. Moscow: Mashinostroyeniye.
7. Makarov, E.L. (1981) Cold cracks in welding alloyed steels. Moscow: Mashinostroyeniye.
8. Kasatkin, S.B., Mikhoduj, L.I., Gordonny, V.G. (1996) Methodological approaches to an integrated study of delayed and brittle fracture of welded joints of high-strength low-alloyed steels. Avtomaticheckaya Svarka,'2, 58 - 60.
9. Pokhodnya, I.K., Shvachko, V.l. (1997) Physical nature of hydrogen-induced cold cracks in structural steel welded joints. Ibid, 5,3-12.
10. Savage, W.F., Nippes, E.F., Tokunage, Y. (1987) Hydrogen induced cracking in HY-130 steel weldments. Welding Journal, 4, 118-126.

Suggested Citation

L.I. Mikhoduj, S.B. Kasatkin (2000) Preheating and postweld heating in welding high-strength alloyed steels. The Paton Welding J., 01, 20-22.