A Comprehensive Review of Gas Tungsten Arc Welding (GTAW) with a Focus on Weld Parameters

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G. Pugalvendhan; D.Noorullah; K.Venkatesan

A Comprehensive Review of Gas Tungsten Arc Welding (GTAW) with a Focus on Weld Parameters

Authors: G. Pugalvendhan, D.Noorullah, K.Venkatesan

Unique Paper ID: 180202
Volume: 12
Issue: 1
PageNo: 432-436

Keywords: GTAW HAZ Welding Speed Voltage Current Heat Input Shielding Gas Filler Metal.

Abstract:
This study reviews the critical parameters influencing Gas Tungsten Arc Welding (GTAW) and their impact on weld quality and performance. Welding current is identified as the most crucial factor affecting electrode burn-off, fusion depth, and weld geometry, with direct current electrode negative (DCEN) providing superior penetration and travel speed. Welding voltage, speed, and heat input play significant roles in controlling arc stability, heat transfer, and weld pool formation, ultimately shaping the weld’s mechanical and metallurgical properties. The selection and composition of shielding gases such as argon, helium, and their mixtures notably affect arc temperature, plasma characteristics, and penetration through phenomena like current constriction and Marangoni convection. Electrode tip geometry influences arc concentration and heat flux distribution, impacting arc velocity and welding efficiency. The use of filler metals tailored to the base material’s chemical and mechanical requirements ensures adequate strength, corrosion resistance, and crack prevention, particularly in thicker sections and specialized alloys. Understanding and optimizing these parameters enables the production of high-quality, defect-free welds with desired structural integrity and service performance.

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Cite This Article

ISSN: 2349-6002
Volume: 12
Issue: 1
PageNo: 432-436

A Comprehensive Review of Gas Tungsten Arc Welding (GTAW) with a Focus on Weld Parameters

Available:https://ijirt.org/article?manuscript=180202

Impact Factor
8.01 (Year 2024)

UGC Approved
Journal no 47859

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