Automatic Welding, 2024, №04



2024 №04 (04)

DOI of Article 10.37434/as2024.04.05

2024 №04 (06)

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Avtomaticheskaya Svarka (Automatic Welding), #4, 2024, pp. 42-46

Welding and technological properties of flux-cored wire with the charge in the form of granular powder

І.О. Riabtsev¹, А.А. Babinets¹, І.P. Lentiugov¹, J. Niagaj², A. Czuprynski³

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: a_babinets@ukr.net
²Upper Silesian Institute of Technology, E-mail: Jerzy.Niagaj@git.lukasiewicz.gov.pl.
³Silesian Polytechnic Institute, E-mail: artur.czuprynski@polsl.pl

Comparative experimental studies on the influence of the type and particle size distribution of powders of the original metal granular materials, used as a flux-cored wire charge, on its welding and technological properties during submerged arc surfacing were carried out. High-speed steel powder PG-R6M5 with the granulation of 50...300 μm and 200...250 μm, obtained by spraying a melt metal, was used as a charge for the experimental wires. As the reference, flux-cored wire was used, the charge of which consists of ferroalloys with a granulation of 50...300 μm, calculated to ensure a similar chemical composition of the deposited metal and manufactured using standard technology. It was experimentally determined that the welding and technological properties of three types of wires are at a high level, while the surfacing process with flux-cored wires, the charge of which contains granulated powder PG-R6M5, is characterized by greater stability, which affects an increase in melting and surfacing coefficients, and a decrease in the loss coefficient compared to the analogue wire with a charge of ferroalloy powders. It was also determined that the content of harmful impurities in the specimen deposited by experimental wires with a charge of granular powders is lower than in the reference specimen. The patterns noted above indicate that the use of granulated powder in the charge of flux-cored wires is not only technically possible, but also leads to an increase in the uniformity of a flux-cored wire, which has a positive effect on its welding and technological properties. 18 Ref., 3 Tabl., 2 Fig.
Keywords: arc surfacing, flux-cored wire, flux-cored wire charge, particle size distribution of powders, ferroalloys, welding and technological properties, deposited metal, stability of surfacing, metallurgical heredity

Received: 16.04.2024
Received in revised form: 23.05.2024
Accepted: 08.07.2024

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