2022 №05 (07) DOI of Article
2022 №05 (02)

Automatic Welding 2022 #05
Avtomaticheskaya Svarka (Automatic Welding), #5, 2022, pp. 3-9

Influence of pulsed-arc welding modes on the structure and mechanical properties of welds and haz metal of welded joints of 30KH2N2MDF steel

O.A. Gaivoronsky, V.D. Poznyakov, Yu.V. Demchenko, A.M. Denysenko, A.V. Zavdoveev, V.A. Kostin, T.G. Solomiychuk

E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The technological concept of welding high-strength steels with the yield strength over 1200 MPa is proposed and scientifi cally substantiated, which consists in combination of pulsed-arc MIG welding and application of a high-alloy wire of Cr – Ni – Mn alloying system. The structured information on the peculiarities of the thermal cycle and its infl uence on the structural transformations in HAZ and weld metal was obtained. The notion of the course of physical and metallurgical welding processes depending on basic parameters of standard and forced welding modes was developed. Their positive eff ect on mechanical properties of welded joints was established. 13 Ref., 3 Tabl., 7 Fig.
Keywords: pulsed-arc welding, high-strength steels, properties, structure, heat-aff ected zone, austenitic welding material

Received: 24.02.2022


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