Laser beam submerged arc hybrid welding: A novel hybrid welding process

Reisgen, Uwe; Olschok, Simon; Engels, O.

doi:10.2351/1.5037269

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…Figure 5 indicates an excess of heat for this welded joint. This behavior was also observed by some authors [24,25], who suggests that high penetration arc welding processes require the use of backings, also known in the literature as support. Backing is the name given to the material or device placed at the back of the joint to be welded adjacent to the joint root.…”

Section: Resultssupporting

confidence: 79%

Evaluation of High Penetration Hybrid Laser-GMAW Welding Process Productivity Applied in the Joining of Thick Plates and Pipelines

Silva

Rodrigues

Pereira

et al. 2022

Preprint

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Welding processes are present in all sectors of the industry, highlighting the manufacturing industry of thick plates and pipelines. In these applications, welding processes have a major influence on costs, schedules, risk analysis and project feasibility. Conventional arc welding processes, such as the gas metal arc welding (GMAW) process, have limitations when applied to high thickness joints due to their maximum achievable penetration depth. On the other hand, the laser beam welding (LBW) welding process, despite reaching high penetration depths, has several limitations mainly regarding the geometric tolerance of the joint. In this regard, the hybrid laser-arc welding (HLAW) process emerges as a promising bonding process, combining the advantages of the GMAW and LBW processes into a single melting pool. Despite the many operational and metallurgical advantages, the HLAW process presents a high complexity due to the high number of parameters involved and the interaction between the laser beam and the electric arc. The present work discusses the challenges involved in the parametrization of the HLAW process applied to the joining of thick plates and pipes, and empirically evaluated a comparison between the HLAW and GMAW processes, showing a reduction of operating time of approximately 40 times, and a reduction of consumption of shielding gas and filler material of approximately 20 times, evidencing the technical and financial contribution of the hybrid process.

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Section: Resultssupporting

confidence: 79%

Evaluation of High Penetration Hybrid Laser-GMAW Welding Process Productivity Applied in the Joining of Thick Plates and Pipelines

Silva

Rodrigues

Pereira

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The effective areas of both processes increasingly coincide in a common process zone. Both melting baths are mixed and alloying elements introduced by the filler material are transported into the deep LB-dominated weld seam areas, as has already been proven in [18] by chemical analysis methods.…”

Section: Forming Of the Melt Pool At Different Process Distancesmentioning

confidence: 90%

“…In addition, it could be proven that during welding with a process distance (D LA ) of 15 mm, alloying elements located exclusively in the filler material are located in the root area of the weld seam, Fig. 1 [17,18].…”

Section: Introduction/motivationmentioning

confidence: 99%

Visualization of the molten pool of the laser beam submerged arc hybrid welding process

2020

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Submerged arc welding is currently the predominant industrial welding process for joining various steel grades in the plate thickness range of about 40 mm. A high energy input and the associated component distortion are unavoidable due to the high number of welding layers. By combining the conventional submerged arc welding process with the laser beam welding process to form a common hybrid welding process, this welding task can be mastered in only two welding layers by means of layer-counterlayer technology. This considerably reduces the welding time and thermally induced component distortion to a minimum due to the symmetrical energy input. A characteristic feature of a hybrid welding process is the formation of a common weld pool. In previous studies, the mixing of the molten pool has already been proven using chemical analysis methods. In the context of this paper, the shaping of the hybrid weld pool is also discussed. The molten material is expelled out of the joining zone by means of a gas pressure surge. Subsequently, a light section sensor was used to scan this area and produce a three-dimensional image from the formerly molten weld seam area. This shows that a single contiguous melt pool is produced. Finally, the first one-sided welds with full penetration and backing will be presented and discussed.

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Evaluation of high penetration hybrid laser-GMAW welding process productivity applied in the joining of thick plates

Silva

Rodrigues

Pereira

et al. 2022

Int J Adv Manuf Technol

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Laser beam submerged arc hybrid welding: A novel hybrid welding process

Cited by 6 publications

References 10 publications

Evaluation of High Penetration Hybrid Laser-GMAW Welding Process Productivity Applied in the Joining of Thick Plates and Pipelines

Evaluation of High Penetration Hybrid Laser-GMAW Welding Process Productivity Applied in the Joining of Thick Plates and Pipelines

Visualization of the molten pool of the laser beam submerged arc hybrid welding process

Evaluation of high penetration hybrid laser-GMAW welding process productivity applied in the joining of thick plates

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