The Influence of Parameters on Penetration, Speed and Bridging in Laser Hybrid Welding

Kah, Paul; Salminen, Antti; Martikainen, Jukka

doi:10.5755/j01.mech.17.3.511

Cited by 9 publications

(7 citation statements)

References 28 publications

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“…Even though the parameter adjustment of the arc correction L K lead to linear changes in seam width b Seam and MIG power P MIG . The reasons for the non-linearity is the quadratic consideration of the seam width b Seam in equation (1). The causal relationship between the functions is the change in heat flow.…”

Section: Intensity Of the Mig Arc And The Root Connection Of The T-jointmentioning

confidence: 99%

“…The coupling of laser and MIG processes to form a hybrid process with a single melting pool offers advantages, compared to each process individually. These advantages are characterized by high welding speed, gap bridging capability and welding depth 1,2) . At the same time, the low line energy leads to a reduction of thermal stress and thus to low distortion 3) .…”

Section: Introductionmentioning

confidence: 99%

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MIG Arc Effects on Root Penetration of Laser Hybrid Welded T-Joints

Gaigl

2020

Journal of Welding and Joining

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The effects of MIG parameters on a laser hybrid process are explored in this paper. In particular, the correlation between the MIG arc length and seam parameters. Seam Parameters are the seam width and the root penetration of fillet welds on T-joints. By variation of MIG parameters, such as current, voltage, and frequency, an increase of root penetration of up to 30% is reached. Based on this data, the link between intensity of the MIG process, arc length, and root connection are worked out. The base material is made out of AlMg3Mn and the filler wire out of AlSi5.

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Section: Intensity Of the Mig Arc And The Root Connection Of The T-jointmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

MIG Arc Effects on Root Penetration of Laser Hybrid Welded T-Joints

Gaigl

2020

Journal of Welding and Joining

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“…However, the main parameters can be grouped into design parameters (material thickness and gap geometry), combined process parameters (welding speed, process distance) and material parameters (type of material), as shown in Figure 4. These parameters significantly influence the process result [63]. A key experimental parameter is the relative position between the laser and arc sources, known as laser or arc leading.…”

Section: Gradementioning

confidence: 99%

“…LAHW is a faster process than conventional arc welding, since only one pass can be required to generate the weld bead in thicknesses below 25 mm. The laser can also promote a pre heat of the materials to be welded and as an automated heating process, the quality control is more efficient [63]. Bachmann M. et al analyse the effect of pre-heating the welding zone of large thickness parts.…”

Section: Laser Parametersmentioning

confidence: 99%

Laser Hybrid Butt Welding of Large Thickness Naval Steel

Churiaque

Chludzinski

Porrúa-Lara³

et al. 2019

Metals

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Plates joining is one of the first stage at large vessels manufacturing line, process conditioning the whole shipbuilding production. Laser Arc Hybrid Welding (LAHW) process is nowadays providing promising results for large thickness naval steel, being primarily used for welding plates with thicknesses between 6 to 15 mm, reaching up to 51 mm. In addition to this high penetration ability, LAHW allows increasing the production rates. Therefore, this technology is proposed as an alternative to conventional welding processes in shipbuilding, as it integrates the advantages of laser and arc welding, providing high process stability, high welding speed and penetration, narrow weld beads with a low heat input and good metallurgical properties. The present review reports the most representative investigation regarding the use of this technology to join large thickness flat panels of naval steel. It includes a summary of the most influential process variables, equipment characteristics, material properties, naval regulations, as well as microstructural characterisation and mechanical properties of joints. This review is thought to help readers from different backgrounds, covering from non-expert on welding or on naval sector, to industrial LAHW applicators and researchers. The industrial need of performing one single pass procedure to assure high quality welds of high thickness is suggested as one of the key aspects for future investigations.

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“…If it is forehand, the penetration increases, whereas if it is backhand, it is reduced [10,11]. This statement is supported in this research by the study of the electric parameters used in each welding position and their variations for each position in order to carry out suitable penetration.…”

Section: Introductionmentioning

confidence: 97%

Experimental Research on the Electrical Parameters of GMAW on Different Positions Welds

Romaní

Meseguer-Valdenebro

Portolés

2016

Trans Indian Inst Met

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This paper presents the influence of the main parameters of the GMAW welding process on ingot iron sized 300 9 125 9 3 mm 3 , with a 1 mm separation between edges and without any bevel preparation. Three gases were used in this research: CO 2 , C15 and C25, with the purpose of studying the shielding influence of each of these gases separately in the welding process. In this research different power ranges were used with the purpose to assure the quality of the surface finish on the bead and the minimum penetration on the plates. The influence of the welding torch's direction of advancement (forehand or backhand) for positions PA, PC and PE were studied together with its influence on the power source. The position which needed the least energy was the PA, followed by position PC and then position PE. The forehand advancement direction required more power than the backhand advancement direction for all positions. The influence of the gases from high to low on the width of the root bead and face bead was C15, CO 2 and C25. This work would be useful to evaluate the influence of the welding parameters on a welding procedure specification with the GMAW welding process. Keywords Welding positions Á GMAW Á Electrical parameters Á Gas Á Forehand Á Backhand List of symbols ASME V American Standard Mechanical Engineers, section V AWS American Welding Society C15 Gas 15 % CO 2 ? 85 % Ar C25 Gas 25 % CO 2 ? 75 % Ar EN European norm GMAW Gas metal arc welding ISO

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The Influence of Parameters on Penetration, Speed and Bridging in Laser Hybrid Welding

Cited by 9 publications

References 28 publications

MIG Arc Effects on Root Penetration of Laser Hybrid Welded T-Joints

MIG Arc Effects on Root Penetration of Laser Hybrid Welded T-Joints

Laser Hybrid Butt Welding of Large Thickness Naval Steel

Experimental Research on the Electrical Parameters of GMAW on Different Positions Welds

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