The Paton Welding Journal, 2021, №12



2021 №12 (08)

DOI of Article 10.37434/tpwj2021.12.01

2021 №12 (02)

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The Paton Welding Journal, 2021, #12, 3-8 pages

Influence of a forced mode of pulsed-arc welding on the structure and properties of joints of steel of the strength class C440

A.V. Zavdoveev¹, V.D. Poznyakov¹, M. Rogante², S.L. Zhdanov¹, T.G. Solomiichuk¹, O.A. Shyshkevych¹

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²Rogante Engineering Office 62012 Civitanova Marche, Italy

Abstract
In the work the influence of a pulsed-arc forced welding on the structure formation and properties of welds and HAZ metal as compared to standard pulsed-arc welding was studied. On the example of a high-strength S460M steel, it was shown that a pulsed-arc forced welding can effectively regulate the structural formation. Change in the welding thermal cycle, namely, accelerated heating and delayed cooling leads to the formation of the optimal structure in the weld and HAZ, which allows obtaining high strength and resistance to brittle fracture. Advantages of a pulsed-arc forced welding allow welding without edge preparation, which significantly improves the efficiency of the process as a whole.
Keywords: pulsed-arc welding, high-strength steel, weld and HAZ metal, thermodeformation cycle, structure, properties of welded joints

Received 30.06.2021і
Accepted: 24.12.2021

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