The Paton Welding Journal, 2012, №10



2012 №10 (01)

2012 №10 (03)

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The Paton Welding Journal, 2012, #10, 10-15 pages  

WELDING FROM ONE SIDE OF CLAD PIPING OF NUCLEAR POWER PLANTS

O.G. Kasatkin¹, A.K. Tsaryuk¹, V.Yu. Skulsky¹, A.R. Gavrik¹, S.I. Moravetsky¹, M.A. Nimko¹, G.N. Strizhius¹, N.V. Terovets¹, A.I. Byvalkevich², N.V. Nemlej³ and R.I. Kuran⁴

¹E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
²OC «Atomremontservis of NAEC «Energoatom», Slavutich, Ukraine
³OC «South-Ukrainian NPP of NAEC «Energatom», Yuzhno-Ukrainsk, Ukraine
⁴YUTEM-Engineering, Bucha, Ukraine
 
 
Abstract
Regularities of structure formation in bimetal material welded joints are generalized. Causes for deterioration of toughness, ductility and technological strength of weld metal are considered. Technological measures to ensure the required service properties and crack resistance of weld metal are specified. Initial data are determined to develop the basic process of welding from one side the NPP piping from clad sheets.
 
Keywords: arc welding, clad steels, welded joints, brittleness, cracks, carbon diffusion, brittle interlayers, welding technologies
 
 
Received:                01.06.12
Published:               28.10.12
 
 
References
 
1. Kakhovsky, N.I. (1975) Welding of high alloy steels. Kiev: Tekhnika.
2. Fartushny, V.G., Evsyukov, Yu.G. (1977) Transition welds in welding of two-layer steels. Avtomatich. Svarka, 10, 30-33.
3. Zemzin, V.N. (1966) Welded joints of dissimilar steels. Moscow; Leningrad: Mashinostroenie.
4. Gotalsky, Yu.N. (1981) Welding of dissimilar steels. Kiev: Tekhnika.
5. Kasatkin, O.G., Tsaryuk, A.K., Skulsky, V.Yu. et al. (2007) Method for improving local damage resistance of welded joints in NPP pipelines. The Paton Welding J., 3, 27-30.
6. Tsaryuk, A.K., Skulsky, V.Yu., Kasperovich, I.L. et al. (2006) Development and certification of automatic narrow-gap argon-arc welding technology of MPC Dn850 elements at NPP. Ibid., 5, 19-25.

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