The Paton Welding Journal, 2000, №11

2000 №11 (07)

2000 №11 (09)

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The Paton Welding Journal, 2000, #11, 37-40 pages

Challenging technologies for high-strength steel welding without preheating and heat treatment

V.V. Snisar, E.L. Demchenko, E.V. Ivanchenko

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

Abstract
Technologies and welding consumables for manual arc and mechanized welding of high-strength hardenable steels without preheating and postweld heat treatment (PWHT) to provide a welded joint equal in strength to the base metal are presented. Structure, physical-chemical properties, susceptibility to a delayed fracture and corrosion cracking of welded joints made from 15Kh2N4MDA (C - 0.15; Cr - 2.0; Ni - 4.0; Mo, Cu - 1.0 wt.%) high-strength steel are described.
Keywords: welding consumables, hardenable steel, weld metal, welded joint, mechanical properties, microstructure, crack resistance, cold resistance, fatigue strength

References

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4. Gotalsky, Yu.N., Snisar, V.V., Demchenko, E.L. et al. (1990) Welding of high-strength steels with a yield strength of more than 800 MPa without preheating and heat treatment. Avtomaticheskaya Svarka, 10, 38 - 40.
5. Kozlov, R.A. (1969) Hydrogen in welding of hull steels. Leningrad: Sudostroyeniye.
6. Demchenko, E.L., Snisar, V.V., Lipodaev, V.N. et al. (1991) Ways of reduction of hydrogen content in weld metal of 03KM2N8M2GST steel in arc welding. Avtomaticheskaya Svarka, 10, 23 - 27.
7. Makarov, E.L. (1981) Cold cracks in welding of alloyed steels. Moscow: Mashinostroyeniye.
8. Snisar, V.V., Demchenko, E.L. (1990) Prevention of cold cracks in 15Kh2N4MDA high-strength steel welded joints with austenitic-martensitic weld. Avtomaticheskaya Svarka, 2, 24 - 27.
9. Snisar, V.V., Demchenko, E.L., Gaivoronsky, A.A. (1993) Effect of weld structure on properties of HAZ of welded joints of steel 30Kh2N2M. Ibid., 9, 43 - 45.
10. Snisar, V.V., Demchenko, E.L. (1988) Cold resistance of austenitic-martensitic weld in welded joint of steel 15Kh2N4MDA. Ibid., 12, 62 - 63.
11. Snisar, V.V., Novikova, D.P. (1984) Study of martensitic interlayer in fusion zone of high-strength steel of 15Kh2N4MDA type with austenitic-martensitic weld metal. Ibid., 7, 68 - 69.
12. Snisar, V.V., Yushkevich, Z.V., Demchenko, E.L. et al. (1984) Resistance to corrosion cracking of 15Kh2N4MDA high-strength steel welded joints with austenitic-martensitic weld. Ibid., 10, 69 – 71.

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Suggested Citation

V.V. Snisar, E.L. Demchenko, E.V. Ivanchenko (2000) Challenging technologies for high-strength steel welding without preheating and heat treatment. The Paton Welding J., 11, 37-40.

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