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2000 №06 (03) 2000 №06 (05)

The Paton Welding Journal 2000 #06
The Paton Welding Journal, 2000, #6, 16-21 pages

Optimizing of composition and technological properties of electrode wire Sv-08KhG2SNMT for shielded-gas welding of heat-treated low-alloyed high-strength steel

P.P. Protsenko, N.T. Privalov

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

Abstract
The influence of main alloying elements in the wire on the effective ionization potential of the arc atmosphere and the thermodynamic activity of elements in multicomponent iron-based melts is considered. Welding and technological properties of Sv-08KhG2SNMT electrode wire were studied in comparison with series-produced wires. It is shown that complex alloying of the wires with chromium, nickel, molybdenum and titanium within optimum limits in a wide range of test temperatures provides a high impact strength of the weld metal which is attributable to its favourable structure.
Keywords: low-alloyed steels, shielded-gas welding, welding wire, arc stability, metal spattering, formation of welds, properties of welded joints, investigations

References

1. Asnis, A.E., Ivashchenko, G.A, Demchenko, Yu.V. (1983) Heat-hardened steel 09G2S with 450 MPa yield strength for welded structures. Avtomaticheskaya Svarka, 12, 55 – 56.
2. Egorova, S.V., Sterenbogen, Yu.A., Yurchishin, A.V. et al. (1987) Weldability of low-alloyed steels hardened by normalizing from an intercritical interval of temperatures. Ibid., 2, 20 - 23, 31.
3. Privalov, N.T., Protsenko, P.P., Kozlovets, O.N. et al. (1999) Peculiarities of technology of welding of isothermal tanks of steel 09G2S using different combinations of welding consumables. Ibid., 5, 37 - 41.
4. Privalov, N.T., Protsenko, P.P., Kozlovets, O.N. et al. (1999) Application of steel 09G2SYuCh for manufacture of welded isothermal tanks. Ibid., 6, 33 - 37.
5. (1977) Application of heat-hardened low-alloyed steels for objects of oil and gas industries. Ed. by N.N. Koshelev. Moscow: Nedra.
6. Protsenko, P.P., Privalov, N.T. (1999) Effect of alloying elements on electrode metal transfer in shielded-gas welding. Avtomaticheskaya Svarka, 12, 29 - 33.
7. Khrenov, K.K. (1949) Electric weldiny arc. Kyiv: Mashgiz.
8. Podgaetsky, V.V., Bondarenko, T.P., Privalov, N.T. et al. (1990) Activity of main alloying elements in low-alloyed steels for welding wires. Avtomaticheskaya Svarka, 6, 15 - 18.
9. Golovatyuk, A.P., Levchenko, O.G. (1985) Values of gross evolutions of welding aerosols and their application in practice. Svarochnoye Proizvodstvo, 10, 40 - 41.
10. Voropaj, N.M., Krivtsun, I.V. (1978) Effective potential of ionization of multicomponent systems with activating additions. Avtomaticheskaya Svarka, 2, 66 - 67.
11. Uljanov, V.I. (1974) Effect of some alloying elements on technological characteristics of wires for CO2 welding. In: Thesis for Cand. of Techn. Sci. degree. Kyiv: PWI.
12. Paton, B.E., Voropaj, N.M. (1979) Welding with activated consumable electrode in a shielding gas. Avtomaticheskaya Svarka, 1, 1 - 7, 13.
13. Martynenko, S.A., Svetsinsky, V.G., Uljanov, V.I. et al. (1976) Wire with anticorrosion coating for welding in shielding gases. Ibid., 9, 53 - 54.
14. Asnis, A.E., Gutman, L.M., Pokladii, V.R. et al. (1982) Welding in mixture of reactive gases. Kyiv: Naukova Dumka.

Suggested Citation

P.P. Protsenko, N.T. Privalov (2000) Optimizing of composition and technological properties of electrode wire Sv-08KhG2SNMT for shielded-gas welding of heat-treated low-alloyed high-strength steel. The Paton Welding J., 06, 16-21.