Hybrid laser welding and friction stir welding applied to 6056 aluminium alloy

Verwimp, Jo; Gedopt, Jan; Geerinckx, Eric; Haver, Wim Van

doi:10.2351/1.5060799

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…Hybrid welding on aluminum by Cassalino et al (2013) shows that laser leading configuration achieves deeper penetration and higher process velocity than with arc leading configuration. Amongst others, these advantages are used for welding aluminum by Verwimp and Gedopt (2007), welding steel by Grünenwald et al (2010), or even welding of multimaterial joints of steel and aluminum by Walter et al (2008).…”

Section: Introductionmentioning

confidence: 98%

Gap Bridging Ability in Laser GMA Hybrid Welding of Thin 22MnB5 Sheets

et al. 2014

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In this paper, laser GMA hybrid welding of thin ultra-high-strength steel sheets (22MnB5) is investigated. A single-mode laser beam oscillating transversal to the welding direction is used in order to minimize the heat input during the process. The sheets have a thickness of 1.5 mm each and are fixed in overlap configuration. The gap between the sheets was 0.8 mm during experiments in order to simulate typical gap width in industrial manufacturing processes. It is shown that a stable weld seam has been achieved for this gap width in case of a welding speed of 6 m/min. The gap bridging ability is caused by the interaction of the arc and the laser beam process. The laser beam process produces deeper penetration in the bottom sheet. Thus, the arc is stabilized by the laser beam.

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Section: Introductionmentioning

confidence: 98%

Gap Bridging Ability in Laser GMA Hybrid Welding of Thin 22MnB5 Sheets

et al. 2014

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Study of improvement of gap tolerance in laser MIG arc hybrid welding of aluminium alloy

Wang

Nishimura

Fujii

et al. 2009

Welding International

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Hybrid welding combining YAG laser or fibre laser with MIG arc was carried out on aluminium alloy, and the effects of setup conditions of a laser beam and a wire, and the laser beam parameters on wire melting phenomena and gap tolerance in butt joint were investigated. It was found that, in order to obtain a deeper penetration, the laser beam should be separated from the wire with a distance at which there was no direct interaction between a laser beam and a droplet during its transfer. On the contrary, in order to get a wider gap tolerance for a butt joint, for example, it was better for the laser beam to be set to cross with a wire over 2 mm so that the laser beam could directly irradiate on the wire surface to melt it. As a result, the arc current could be decreased so efficiently that the molten pool size formed by MIG is decreased and the gap tolerance increased.In the case of the utilization of a fibre laser, it was found that the wire melting phenomena were affected by the laser beam parameters such as the beam diameter and the defocused conditions when welding was not done at a focal position. It was clarified that even at the same laser beam diameter on the work surface, the wire melting phenomena could be different under the different defocused conditions. In the defocused conditions where the focal position was over the work surface, the molten droplet on the wire tip evaporated more easily than the case where the focal position was within the work surface.From the viewpoint of laser absorption by the wire or the molten droplet, according to an arc phenomenon approach, it was found that about 10% of laser energy was absorbed during hybrid welding when the laser beam was directly irradiated on the wire surface.

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