High power Nd:YAG laser welding of automotive materials

Naeem, Mohammed; Stolarczyk, John

doi:10.2351/1.5059516

Cited by 5 publications

(13 citation statements)

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“…And it may also be noted that the welds on a flat material are quite easy to obtain, but the reality of a 3D application is quite challenging to be met. The proposed solution combines the advantages of the gap method [2] and coating removal method [1,3,12], which are more cumbersome and expensive for the production lines [13] than the method proposed here. Main advantages of the proposed method are those obtained by the gap techniques, while not having to introduce a gap between the sheets.…”

Section: Discussionmentioning

confidence: 99%

“…It is hoped that this solution offers a better compromise to be implemented on the production lines than any other method [1][2][3][4][5][6][7][8][9][10][11][12] proposed until today. For example, the alternate method of delaying the solidification of the keyhole suffers the problem of strict control of the procedural parameters.…”

Section: Discussionmentioning

confidence: 99%

“…The slot serves two functions; firstly removal of zinc coating and secondly elimination of the vapourized zinc that blows away by the gas used in the cutting process. Although the zinc coat removal here may produce the best welding results, but this new method is not cumbersome as the methods previously proposed in literature [3]. The second function of the slot is to provide a way-out to the zinc vapours, which are to be produced by the keyhole of the welding beam.…”

Section: Pre-cursor Beam Solutionmentioning

confidence: 93%

“…Two similar hybrid solutions are being proposed [1], where one is combining Nd:YAG and CO 2 lasers in tandem, the first for cutting, and the second for welding. Alternatively two beams of the same CO 2 laser source may also be used in tandem in the solution, which is virtually an advanced integration of the "gap-method" introduced several years ago [2] and the dual beam system proposed later on [3]. Here Figs.…”

Section: Pre-cursor Beam Solutionmentioning

confidence: 99%

“…As given in Refs. [1][2][3][4][5], the solutions proposed in the last many years have not yet found an easy-to-apply realization to replace conventional spot welding and its electrodes [2]. The many advantages offered by laser welding technology still justify an ongoing quest for some efficient method.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Laser welding of zinc-coated steel with tandem beams: Analysis and comparison

Iqbal

Gualini

Grassi

2007

Journal of Materials Processing Technology

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Pre-cursor Beam Solutionmentioning

confidence: 93%

Section: Pre-cursor Beam Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Laser welding of zinc-coated steel with tandem beams: Analysis and comparison

Iqbal

Gualini

Grassi

2007

Journal of Materials Processing Technology

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Research and Progress in Laser Welding of Wrought Aluminum Alloys. II. Metallurgical Microstructures, Defects, and Mechanical Properties

Cao

Wallace

Immarigeon

et al. 2003

Materials and Manufacturing Processes

145

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With the wide application of aluminum alloys in automotive, aerospace, and other industries, laser welding has become a critical joining technique for aluminum alloys. In this review, the research and progress in laser welding of wrought aluminum alloys are critically discussed from different perspectives. The primary objective of the review is to understand the influence of welding processes on joint quality and to build up the science base of laser welding for the reliable production of aluminum alloy joints. Two main types of industrial lasers, carbon dioxide (CO 2 ), and neodymiumdoped yttrium aluminum garnet (Nd:YAG), are currently applied but special attention is paid to Nd:YAG laser welding of 5000 and 6000 series alloys in the keyhole (deep penetration) mode. In the preceding article of this review (part I), the laser welding processing parameters, including the laser-, process-, and material-related variables and their effects on welding quality, have been examined. In this part of the review, the metallurgical microstructures and main defects encountered in laser welding of aluminum alloys such as porosity, cracking, oxide inclusions, and loss of alloying elements are discussed from the point of view of mechanism of their formation, main influencing factors, and remedy measures. The main mechanical properties such as hardness, tensile and fatigue strength, and formability are also evaluated.

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Modified dual-beam method for welding galvanized steel sheets in lap configuration

Gualini

Iqbal

Grassi

2006

Journal of Laser Applications

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The dual laser beams method to lap weld galvanized steel sheets is being discussed, modeled, and analyzed, involving a precursor beam and a higher-power actual beam used in tandem and generated independently or otherwise split from the same source (Nd:yttrium-aluminum-garnet or CO2 laser). The first beam cuts a slot, thus making an exit path for the zinc vapors, while the second beam welds as required. The article also presents and discusses some experiments performed in laboratory using this method, along with the metallurgical analysis results from laboratory showing total absence of zinc in the weld area.

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High power Nd:YAG laser welding of automotive materials

Cited by 5 publications

References 0 publications

Laser welding of zinc-coated steel with tandem beams: Analysis and comparison

Laser welding of zinc-coated steel with tandem beams: Analysis and comparison

Research and Progress in Laser Welding of Wrought Aluminum Alloys. II. Metallurgical Microstructures, Defects, and Mechanical Properties

Modified dual-beam method for welding galvanized steel sheets in lap configuration

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