Optimization and Performance Analysis of Submerged Arc Welding: Influence of Bead Geometry, Process

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Optimization and Performance Analysis of Submerged Arc Welding: Influence of Bead Geometry, Process Parameters, and Heat-Affected Zone- A review Prof. A. V. Patel 1 , Prof. V. P. Patel 2 , Prof. Puneet Bansal 3 , Prof. B. V. Bhuva 4 1, 2, 3, 4, Assistant Professor, Department of Mechanical Engineering, U.V.P.C.E, Kherva, India 384012 ---------------------------------------------------------------------***--------------------------------------------------------------------result, SAW welds exhibit high strength, excellent ductility, Abstract - Submerged arc welding (SAW) is a widely used

and minimal hydrogen and nitrogen content, making them ideal for structural and heavy-duty applications.

process in industrial applications due to its high efficiency and deep penetration capabilities. This study reviews the impact of bead geometry, process parameters, and the heat-affected zone (HAZ) on weld quality. Research findings indicate that increasing deposition rates influence bead width, height, and penetration, affecting overall weld performance. Multiple-wire SAW with metal powder addition enhances deposition efficiency and reduces defects. Optimization techniques, such as the Taguchi method and response surface methodology, have been applied to refine bead geometry, HAZ width, and overall weld properties. The chemical composition of flux and welding wire significantly impacts microstructure, mechanical properties, and element transfer behavior. Studies also show that heat input and travel speed directly affect grain structure, hardness, and toughness in welded joints. Proper selection of welding parameters, flux composition, and wire material is essential for achieving optimal weld strength, toughness, and durability. These findings provide valuable insights for improving SAW techniques in various industrial applications.

This welding technique is commonly applied in industries that require butt joints and fillet welds with grooves, such as automobile manufacturing, railway equipment production, shipbuilding, structural engineering, pressure vessel fabrication, pipeline welding, and storage tank manufacturing. The quality of SAW welds depends on key process variables, including welding current, voltage, travel speed, and flux composition. Careful control and optimization of these parameters are essential for minimizing defects, refining bead geometry, and enhancing mechanical properties. (2) The mechanical properties of a weld are influenced by the base metal composition and significantly affected by weld bead geometry, which is shaped by both direct and indirect welding parameters. In addition to productivity, weld bead geometry plays a crucial role in determining the mechanical strength of the weldment, prompting extensive research on the impact of process control parameters. Key controllable factors such as voltage, current, electrode stick-out, wire feed rate, and welding speed directly influence hardness, yield strength, impact toughness, and ultimate tensile strength (UTS). Studies indicate that increasing electrode stick-out raises weld hardness while reducing yield strength and impact toughness, with UTS initially decreasing before increasing under constant welding current and voltage. In submerged arc welding (SAW), precise selection of process variables is essential for controlling heat-affected zone (HAZ) dimensions and achieving the desired bead size and quality. The thickness of different HAZ layers increases with higher voltage, wire feed rate, and heat input but decreases with increased welding speed. Proper optimization of these parameters enhances weld strength, durability, and overall performance in industrial applications.

Key Words: Submerged Arc Welding, Bead Geometry, HeatAffected Zone, Welding Parameters, Flux Composition, Mechanical Properties, Optimization Techniques

1. INTRODUCTION Submerged Arc Welding (SAW) is a high-efficiency arc welding process that can be performed in automatic or semiautomatic modes. It is widely utilized in industrial applications due to its high deposition rate, deep penetration, and consistent weld quality. Unlike conventional arc welding methods, SAW operates by maintaining an arc between a bare consumable electrode and the workpiece, while a granular flux completely covers the arc, making it invisible during welding. This submerged arc technique significantly reduces heat loss and enhances thermal efficiency, reaching up to 90%. (1) The process is best suited for horizontal welding positions, ensuring smooth and uniform weld bead formation. To maintain process consistency, SAW requires an automatic wire feed mechanism, a constant voltage power source, and digital controls. The granular flux, continuously supplied from a hopper, acts as a protective barrier against atmospheric contamination, improving weld integrity. As a

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2. LITERATURE REVIEW 2.1 EFFECT OF BEAD GEOMETRY ON THE QUALITY OF WELD: R.S. Chandel, H.P. Seow, F.L. Cheong while predicting the impact of increasing deposition rates on the bead geometry in

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submerged arc welding. It analyzes key parameters such as bead width, height, and penetration. Results indicate that higher deposition rates lead to wider and shallower weld beads, affecting overall weld quality. The findings help optimize welding parameters for improved efficiency and performance. (3)

2.2 EFFECT OF PROCESS PARAMETERS ON THE QUALITY OF WELD: P. Yongyutph ,K. Ghoshp, C. Guptaa, K. Patwardha and Satya Prakash while studying study investigates how macrostructure and microstructure affect the toughness of multipass submerged arc welded C-Mn steel deposits. It examines factors such as grain size, phase distribution, and heat-affected zones. The results show that microstructural variations significantly influence toughness, with finer grain structures generally improving it. The study highlights the importance of controlling welding parameters to achieve optimal structural characteristics. It also emphasizes the relationship between weld morphology and mechanical performance. These findings provide valuable insights for optimizing welding techniques to enhance toughness and durability. The research is particularly useful for industries utilizing C-Mn steel in structural applications. (8)

J.Tusek, M. Suban while dealing with high-productivity multiple-wire submerged arc welding and cladding with metal-powder addition. It examines how process parameters influence weld quality, efficiency, and material properties.

The results show that using multiple wires and metal powder increases deposition rates, improves weld bead characteristics, and enhances overall productivity. The study also highlights a reduction in defects and better material utilization. Additionally, it discusses the advantages of this technique in industrial applications. The findings help optimize welding processes for higher efficiency and performance. (4)

N.D. Pandey, A. Bharti and S.R. Gupta while studying study investigates how submerged arc welding parameters and flux compositions influence element transfer behavior and weldmetal chemistry. It examines factors such as welding current, voltage, travel speed, and flux type. Results show that flux composition significantly affects the transfer of elements like manganese, silicon, and sulfur through oxidation and deoxidation reactions. The study emphasizes the role of welding parameters in controlling weld-metal composition and overall quality. Proper selection of fluxes and welding conditions is essential for achieving desired weld properties.

These findings help optimize submerged arc welding for improved performance and consistency in industrial applications.(9)

K. Y. Benyounis, A. G. Olabi while dealing with optimization techniques for various welding processes using statistical and numerical approaches. It explores methods like response surface methodology, Taguchi techniques, and finite element analysis to enhance weld quality and efficiency. The research highlights key welding parameters, such as heat input and welding speed, that influence performance. Applications across different welding methods, including arc and laser welding, are discussed. The findings show that these optimization techniques help reduce defects, improve productivity, and lower costs. This study serves as a valuable resource for researchers and engineers aiming to enhance welding processes. (5) Serdar Karaoğlu and Abdullah Seçgin while dealing with analyzes the sensitivity of key process parameters in submerged arc welding and their impact on weld quality.

Parameters such as voltage, current, welding speed, and wire feed rate are evaluated. Results show that these factors significantly influence bead geometry, penetration, and overall weld performance. Sensitivity analysis helps identify the most critical parameters for process optimization. The study provides valuable insights for improving weld quality, efficiency, and consistency. These findings assist industries in refining submerged arc welding techniques for better control and productivity.(6)

P. Kanjilal, T.K. Pal and S.K. Majumdar, while doing examines the combined effect of flux composition and welding parameters on the chemical composition and mechanical properties of submerged arc weld metal. It analyzes key factors such as welding current, voltage, travel speed, and flux type. Results show that both flux and process parameters significantly influence element transfer, weld-metal strength, and toughness. The study emphasizes the need for optimal flux selection and welding conditions to achieve desired mechanical properties. Proper control of these factors enhances weld quality and minimizes defects. The findings provide valuable insights for improving submerged arc welding performance in industrial applications.(10)

L.J. Yang, R.S. Chandel and M.J. Bibby, while investigating the effects of process variables on bead width in submerged arc welding. It examines key parameters such as welding current, voltage, travel speed, and electrode diameter. Results show that higher current and voltage increase bead width, while greater travel speed reduces it. The study establishes empirical relationships between these variables and bead geometry. This understanding helps in optimizing welding parameters for improved weld quality and consistency. The findings contribute to better control of the welding process in industrial applications. (7)

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De-liang Ren, Fu-ren Xiao, Peng Tian, Xu Wang and Bo Liao, while conducting investigates the effects of welding wire composition and welding process parameters on the weld metal toughness of submerged arc welded pipeline steel. It examines how variations in alloying elements and welding conditions influence the microstructure and mechanical properties of the weld. Results show that welding wire composition significantly affects toughness by altering grain structure and phase distribution. The study highlights the importance of optimizing welding parameters to enhance

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weld metal performance. Proper selection of welding wire and process conditions improves toughness and overall weld quality. These findings provide valuable insights for improving submerged arc welding in pipeline applications.(11)

study highlights the effectiveness of the Taguchi approach in identifying optimal welding conditions for enhanced performance. Proper parameter selection helps improve weld strength, reduce defects, and ensure process efficiency. The findings provide valuable insights for optimizing submerged arc welding in industrial applications.(15)

Ana Ma. Paniagua-Mercado, Victor M. López-Hirata and Maribel L. Saucedo Muñoz, while study examines how the chemical composition of flux influences the microstructure and tensile properties of submerged arc welds. It analyzes the effects of different flux compositions on grain structure, phase distribution, and mechanical strength. Results show that flux composition plays a crucial role in determining weld-metal properties by affecting element transfer and microstructural evolution. Variations in flux chemistry impact tensile strength, ductility, and overall weld performance. The study highlights the importance of selecting appropriate flux materials to achieve desired mechanical properties. Proper flux selection enhances weld quality and ensures better performance in industrial applications.(12)

Viano, D.M.; Ahmed, N.U.; Schumann, G.O., while doing investigates the influence of heat input and travel speed on the microstructure and mechanical properties of double tandem submerged arc welded high-strength low-alloy (HSLA) steel. It examines how variations in these parameters affect grain structure, hardness, and tensile strength. Results show that higher heat input leads to coarser grains and reduced strength, while optimized travel speed helps refine the microstructure and improve mechanical properties. The study emphasizes the importance of balancing heat input and travel speed to achieve the desired weld quality. Proper control of these parameters enhances weld toughness, strength, and overall performance. The findings provide valuable insights for optimizing welding processes in HSLA steel applications.(16)

2.3 EFFECT OF HAZ ON THE QUALITY OF WELD: C. S. LeeRuhi ChandelRuhi ChandelH. P. Seow while doing investigates the effect of welding parameters on the size of the heat-affected zone (HAZ) in submerged arc welding. It examines key factors such as welding current, voltage, travel speed, and heat input. Results show that higher heat input leads to a larger HAZ, which can affect weld quality and mechanical properties. The study highlights the importance of optimizing welding parameters to control HAZ size and minimize adverse effects. Proper parameter selection helps improve weld strength, toughness, and overall performance.

The findings provide valuable insights for achieving better weld quality in industrial applications. (13)

Keshav Prasad ;D. K. Dwivedi, while conducting examines the microstructure and tensile properties of submerged arc welded 1.25Cr-0.5Mo steel joints. It analyzes how welding parameters influence grain structure, phase distribution, and mechanical strength. Results show that the weld metal consists of ferrite and bainite, which affect hardness and tensile properties. Proper control of welding conditions is essential to achieving a balanced microstructure for optimal strength and toughness. The study highlights the relationship between microstructural features and weld performance.

Findings provide valuable insights for improving weld quality in applications requiring high-temperature strength and durability.(17)

Ana Ma. Paniagua-Mercado; V ctor M. L pez-Hirata ; Arturo F. M ndez-S nchez ;Maribel L. Saucedo-Mu oz, while conducting the effects of active and nonactive fluxes on the mechanical properties and microstructure of submerged arc welds in A36 steel plates. It analyzes how flux composition influences weld-metal strength, toughness, and grain structure. Results show that active fluxes enhance element transfer and refine microstructure, leading to improved mechanical properties.

In contrast, nonactive fluxes produce coarser grains and may reduce weld toughness. The study highlights the importance of selecting the right flux type to achieve desired weld quality.

Proper flux selection optimizes weld performance for industrial applications.(14)

3. CONCLUSIONS The review highlights the critical role of welding parameters, flux composition, and process variations in determining the quality of submerged arc welds. Higher deposition rates can lead to wider and shallower beads, affecting weld penetration and strength. The use of multiplewire SAW and metal powder addition enhances productivity while reducing defects. Statistical and numerical optimization techniques help refine process parameters to achieve improved weld quality. Flux and wire composition significantly influence microstructure, element transfer, and mechanical properties. Heat input and travel speed must be carefully controlled to maintain the desired weld toughness and microstructural integrity. The study emphasizes the importance of parameter selection to minimize defects and improve weld consistency. Proper control of HAZ width and bead geometry enhances mechanical performance and durability in welded joints. These findings provide essential guidance for industrial applications, ensuring better weld

Saurav Datta, Asish Bandyopadhyay and Pradip Kumar Pal, The study applies the Taguchi method to optimize bead geometry and heat-affected zone (HAZ) width in submerged arc welding using a mixture of fresh and fused flux. It investigates the effects of welding parameters such as current, voltage, and travel speed on weld quality. Results show that a balanced combination of fresh and fused flux improves bead geometry and minimizes HAZ width. The

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quality, efficiency, and cost-effectiveness in SAW processes.

Further research is needed to explore advanced welding techniques and automation to optimize SAW for future applications.

Journal of Minerals, Metallurgy and Materials Vol.16: 65-70 (2009) 13) Ana Ma. Paniagua-Mercado, Victor M. López-Hirata and Maribel L. Saucedo Muñoz, “Influence of the chemical composition of flux on the microstructure and tensile properties of submerged-arc welds” Journal of Materials Processing Technology,Vol. 169: 346-351 (2005) 14) C. S. LeeRuhi ChandelRuhi ChandelH. P. Seow “Effect of Welding Parameters on the Size of Heat Affected Zone of Submerged Arc Welding” August 2000Materials and Manufacturing Processes 15(5):649-666 DOI: 10.1080/10426910008913011 15) Ana Ma. Paniagua-Mercado; V ctor M. L pez-Hirata ; Arturo F. M ndez-S nchez ;Maribel L. Saucedo-Mu oz, “Effect of Active and Nonactive Fluxes on the Mechanical Properties and Microstructure in Submerged-Arc Welds of A-36 Steel Plates”. Journal of materials and manufacturing processesVol.22: 295 – 297(2007) 16) Saurav Datta, Asish Bandyopadhyay and Pradip Kumar Pal, “Application of Taguchi philosophy for parametric optimization of bead geometry and HAZ width in submerged arc welding using a mixture of fresh flux and fused flux” The International Journal of advance Manufacturing, Vol.36: 689-698(2007) 17) Viano, D.M.; Ahmed, N.U.; Schumann, G.O., “Influence of heat input and travel speed on microstructure and mechanical properties of double tandem submerged arc high strength low alloy steel weldments,” Journal of science and technology of welding and joining, Vol.5 :26- 34(2000) 18) Keshav Prasad ;D. K. Dwivedi, “Microstructure and Tensile Properties of Submerged Arc Welded” 1.25Cr-0.5Mo Steel Joints, Journal of Materials and Manufacturing processes, Vol. 23: 463-468 (2008) 19) Bipin Kumar Srivastava et al. “A review on effect of arc welding parameters on mechanical behaviour of ferrous metals/alloys” International Journal of Engineering Science and TechnologyVol. 2(5), 2010, 1425-1432.

REFERENCES 1) Z.Q. Wanga, “Effect of Ni content on the microstructure and mechanical properties of weld metal with both-side submerged arc welding technique”, Materials Characterization, 138, 2018, 67-77.

2) A.V.Patel, “Effect of consumables and heat input Rate on properties of weld in submerged Arc welding process: a review, GIS science journal, issn no : 1869-9391 volume 8, issue 10, 2021 page no: 1057 -1064 3) R.S. Chandel, H.P. Seow, F.L. Cheong, “Effect of increasing deposition rate on the bead geometry of submerged arc welds,” 4) Journal of Materials Processing Technology 72: 124–128 (1997).

5) J.Tusek, M. Suban, “High-productivity multiple-wire submerged-arc welding and cladding with metalpowder addition,” Journal of Materials Processing Technology 133: 207–213 (2003) 6) K. Y. Benyounis, A. G. Olabi , “Optimization of different welding processes using statistical and numerical approaches - A reference guide “Volume 39: 483-496 (2008) 7) Serdar Karaoğlu and Abdullah Seçgin, Sensitivity analysis of submerged arc welding process parameters, Journal of Materials Processing Technology, 202: 500-507(2008) 8) L.J. Yang, R.S. Chandel and M.J. Bibby, “The effects of process variables on the bead width of submergedarc weld deposits,” Journal of Materials Processing Technology,Vol.29: 133-144 (1992) 9) P. Yongyutph ,K. Ghoshp, C. Guptaa, K. Patwardha And Satya Prakash, “Influence of Macro/Microstructure on the Toughness of'All Weld' Multipass Submerged Arc Welded C-Mn Steel Deposits” ISIJ International. Vol.32: 771-778(1992) 10) N.D. Pandey, A. Bharti and S.R. Gupta, “Effect of submerged arc welding parameters and fluxes on element transfer behavior and weldmetal chemistry”, Journal of Materials Processing Technology, Vol.42: 195-211 (1994) 11) P. Kanjilal, T.K. Pal and S.K. Majumdar, “Combined effect of flux and welding parameters on chemical composition and mechanical properties of submerged arc weld metal” Journal of Materials Processing Technology, Vol.171: 223-231 (2006) 12) De-liang Ren, Fu-ren Xiao, Peng Tian, Xu Wang and Bo Liao, “Effects of welding wire composition and welding process on the weld metal toughness of submerged arc welded pipeline steel” International

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