| 2005 №11 (05) | 2005 №11 (07) |
The Paton Welding Journal, 2005, #11, 24-28 pages
Sealing of hot-rolled steel 20KhN4FA cylinder bottoms by welding
A.K. Tsaryuk, V.Yu. Skulsky, A.R. Gavrik, S.I. Moravetsky, G.N. Strizhius
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
Considered are causes of defects formed in hot-rolled cylinder bottoms and peculiarities of their repair. Weldability of steel 20KhN4FA has been evaluated, and recommendations are given on preheating temperature, welding electrodes and manual arc welding procedure. Automatic submerged-arc welding on a backing was tried out as an alternative welding process
Keywords: arc welding, hot rolling, cylinder bottom, cylinder manufacture technology, sealing
References
1. (1989) Handbook on steels and alloy grades. Ed. by V.G. Sorokin. Moscow: Mashinostroenie.2. Hrivniak, I. (1984) Weldability of steels. Moscow: Mashinostroenie.
3. Skulsky, V.Y., Tsaryuk, A.K., Vasiliev, V.G. et al. (2003) Structural transformations and weldability of hardening high-strength steel 20KhN4FA. The Paton Welding J., 2, 17−21.
4. Sawhill, J.M., Dix, A.W., Sawage, W.F. (1974) Modified implant test for studying delayed cracking. Welding J., 35(12), 554-560.
5. Zaks, I.A. (1996) Electrodes for arc welding of steels and nickel alloys. Refer. Book. St.-Petersburg: Welcome.
6. Kozlov, R.A. (1986) Welding of heat-resistant steels. Leningrad: Mashinostroenie.
7. Chew, B., Harris, P. (1979) HAZ refinement in CrMoV steel. Effects of welding position, weld preparation and electrode size. Metal Construction, May, 229−234.
