Influence of external axial magnetic field on shielded metal arc weld properties for high strength low alloy steel

Pathak, Deepak; Pandey, Sudip; Singh, Rudra Pratap; Balu, Vincent

doi:10.1016/j.matpr.2021.12.296

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…The six contributing factors that impact the penetration depth of weldment were recognized from the literary works [3,20] and previous efforts [21] at the lab of the current authors, the six contributing factors which influence the penetration depth of welded joints were identified. The factors to consider are current, voltage, speed, groove angle, magnetic field density, and magnetic frequency.…”

Section: Finding the Relevant Factorsmentioning

confidence: 98%

Optimization of Process Variables for Prediction of Penetration Depth of HSLA Steel Welds Using Response Surface Methodology

Pathak

Kumar

Singh

et al. 2022

KEM

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The statistical model is created for predicting penetration depth in an alternating current-based additional axial magnetic field controlled shielded metal arc welding of ASTM A 516 Gr.70 steel. The design for the trials is developed using the Placket-Burman design and response surface methodology. The created model determines the optimum process variables for getting excellent penetration depth. The input variables (current, magnetic field density, and magnetic frequency) are chosen for a response like penetration depth. This model can predict the main effects and the interacting effects of three process variables. The findings reveal that a higher current value with a low magnetic field density leads to deeper penetration and vice versa. Furthermore, a greater penetration depth is achieved at lower magnetic field density and higher magnetic frequency. With a desirability of 98.8%, the optimum process variables are 110 A, 0 mT, and 60 Hz. The predicted response values produced from the regression equation based upon process variables are extremely similar to the observed output, demonstrating the usefulness of second-order regression equations. For improved joint efficiency, a high level of penetration is needed.

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Section: Finding the Relevant Factorsmentioning

confidence: 98%

Optimization of Process Variables for Prediction of Penetration Depth of HSLA Steel Welds Using Response Surface Methodology

Pathak

Kumar

Singh

et al. 2022

KEM

Self Cite

View full text Add to dashboard Cite

show abstract

“…Welding variables, such as welding current, arc voltage, arc travel speed, electrode-to-work plate distance, and gas flow rate, have a direct impact on the shape and movement of the electric arc plasma, which ultimately affects the weld bead characteristics, microstructure, and mechanical properties [5]. In GTAW, using a higher current setting can result in a splatter and can potentially damage the workpiece and the electrode gradually due to a more intense electric arc.…”

Section: Introductionmentioning

confidence: 99%

“…They observed that the original conical shape of the electric arc was deformed, transforming into a compressed elliptical shape, which ultimately increased the bead width. Pathak et al [5] installed a solenoid coil on the filler metal coaxially in shielded metal arc welding. They highlighted that the magnetic frequency and magnetic field density are crucial factors that improve weld bead quality and strength.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of weld bead and microhardness of SS316L weld overlays on S355J2+N steel using GTAW under E-type magnet

Raj,

Gill

2023

Eng. Res. Express

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In this study, a three-pole (E-type) electromagnet with magnetic configurations north-south-north (NSN) and south-north-south (SNS) was installed in the GTAW process to generate a combination of two symmetrically transverse external magnetic fields around the weld arc and the molten pool. The effects of magnetic fields obtained by these two types of magnetic configurations (NSN and SNS) on the weld bead characteristics and microhardness in GTAW were analysed. In these experiments, high-strength low alloy (HSLA) S355J2+N grade with a thickness of 10 mm was selected as the substrate material and S316L as the filler wire. Using magnetic fields during the welding process successfully enhanced the weld bead appearance and shape and improved the mechanical characteristics of weld overlays. It was also observed that for different values of excitation current, magnetic fields generated with both configurations ( i.e., NSN and SNS) provide greater bead width, a higher penetration shape factor, and higher microhardness values in comparison to specimens welded with conventional GTAW. The NSN and SNS configurations of the E-type magnet improve the penetration shape factor by 58% and 46%, respectively. These configurations were more suitable for weld overlays (cladding) and hardfacing. However, the observations indicated an enhancement in microhardness for all excitation current values by employing the NSN and SNS magnetic configurations.

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Effect of Different Magnetic Field Types on Microstructure and Properties of Deposited Metal Prepared from High-Strength Steel Wire

Liu,

Wang,

Zhao

et al. 2024

J. of Materi Eng and Perform

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Influence of external axial magnetic field on shielded metal arc weld properties for high strength low alloy steel

Cited by 7 publications

References 32 publications

Optimization of Process Variables for Prediction of Penetration Depth of HSLA Steel Welds Using Response Surface Methodology

Optimization of Process Variables for Prediction of Penetration Depth of HSLA Steel Welds Using Response Surface Methodology

Characterisation of weld bead and microhardness of SS316L weld overlays on S355J2+N steel using GTAW under E-type magnet

Effect of Different Magnetic Field Types on Microstructure and Properties of Deposited Metal Prepared from High-Strength Steel Wire

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