The Paton Welding Journal, 2022, №03



2022 №03 (01)

DOI of Article 10.37434/tpwj2022.03.02

2022 №03 (03)

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The Paton Welding Journal, 2022, #3, 19-26 pages

Effect of parameters of pulsed-arc welding on the formation of weld metal and microstructure of heat-affected zone of 09G2S steel

S.Yu. Maksymov, D.M. Krazhanovskyi, Yu.A. Shepelyuk, S.V. Osynska

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

Abstract
one of the promising ways to solve the problem of increasing the service life of welded structures is the development of welding methods based on the use of pulsed control of energy parameters of the process. the pulsed mode of welding allows performing a regulated heat input in the welded butt joint zone, controlling the mode of melting the electrode metal, forming the structure of weld metal and heat-affected zone (HAZ). It was found that with an increase in the frequency of pulsed-arc welding, it is possible to reduce the width of the HAZ and the region of a coarse grain. thus, in the case of welding low-alloy steels, due to the use of technology with a pulsed process, there is a prospect of reducing the width of the overheating region, which is important for the cases of repair of pipe wall thinning during remelting of defects in the operating pipeline using a mechanized method.
Keywords: main pipelines, pulsed-arc welding, technological parameters, welded joint, geometric parameters, structure

Received: 26.01.2022
Accepted: 16.05.2022

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