The Paton Welding Journal, 2007, №05

2007 №05 (02)

2007 №05 (04)

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The Paton Welding Journal, 2007, #5, 12-16 pages

Weld microalloying with titanuim and boron in multiarc welding of large diameter gas and oil pipes

L.I. Fejnberg¹, A.A. Rybakov¹, A.N. Alimov², R. Rosert³

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²OJSC «ARCSEL», Donetsk, Ukraine
³Drahtzug Stein Wire & Welding, Germany

Abstract
Microalloying of weld metal with titanium and boron in multiarc welding of pipes, performed through a flux-cored wire placed on one of the arcs, was investigated. This process is characterized by the use of neutral and sub-acid fluxes instead of the basic ones, which improves weld formation at increased welding speed. The optimal content of titanium and boron providing a high impact toughness of the weld metal was determined. Industrial tests of the welding process using the developed flux-cored wire of PP-ASF-1 grade yielded positive results.
Keywords: gas-oil pipes, multiarc welding, flux-cored wire, weld microalloying, titanium, boron, fused neutral flux, agglomerated basic flux, impact toughness

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Suggested Citation

L.I. Fejnberg, A.A. Rybakov, A.N. Alimov, R. Rosert (2007) Weld microalloying with titanuim and boron in multiarc welding of large diameter gas and oil pipes. The Paton Welding J., 05, 12-16.

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