Variation of the Physical Properties in the Weld Bead of the Submerged Arc Welding of Low-Carbon Alloy Steel

M. Aouragh$^{1}$, B. Guerira$^{1}$, L. Touam$^{2}$, S. Derfouf$^{3}$

$^{1}$Mohamed Khider University of Biskra, BP 145RP, 07000 Biskra, Algeria
$^{2}$Abbes Laghrour University, BP 1252 Road of Batna, 40004 Khenchela, Algeria
$^{3}$University of Batna 2, 53 Route de Constantine. Fésdis, 05078 Batna, Algeria

Получена: 12.12.2022; окончательный вариант - 12.01.2023. Скачать: PDF

This paper presents an experimental study, which is performed on weld bead of the gas-tank element made of the low-alloy steel with the following chemical composition (% wt.): (C: 0.20, Si: 0.0079, Mn: 0.778, P: 0.0156, S: 0.058, Cr: 0.021, Al: 0.035, Cu: 0.012, Ni: 0.0075), and 3.3 mm of thick. This manufacturing process ends with a normalized annealing heat treatment at temperature of 920 $\pm$ 10°C. The purpose of this work is to study the effect of important parameter—the electrical voltage $V$. This welding is submerged arc welding under submerged arc-welding particle flux. The principle of the characterization taken into account consists in varying both the electrical voltage $V$, which is between 31 V and 36 V. As shown, this physical parameter directly influences the carbon content in the weld bead, the structural components and the mechanical properties ($\sigma$ and $HV_{0.3}$) of the steel under study.

Ключевые слова: gas tanks, submerged arc welding, electric voltage, low-alloy steel, ferrite, pearlite.


PACS: 61.82.Bg, 64.70.kd, 81.05.Bx, 81.20.Vj, 81.40.Ef, 81.40.-z

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