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Study of laser cold-wire welding of thick aluminum sheets along different gap size and laser-to-wire position

Par Conseil national de recherches du Canada

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AuteurRechercher : 1; Rechercher : 1; Rechercher : ; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada. Automobile et les transports de surface
FormatTexte, Article
ConférenceLasers in Manufacturing Conference 2019, June 24-27, 2019, Munich, Germany
Sujetlaser cold-wire welding; gap tolerance; misalignment; thick aluminum sheet
Résumé
In recent years, there has been growing interest in joining thick aluminum sheets in various markets such as railcar, shipbuilding and aerospace. Laser cold-wire (LCW) welding was developed in this study to join 5.0 mm thick AA6005-T6 aluminum sheets in butt joint configuration. To investigate the gap bridging ability of LCW technique, a process parameter optimization was performed for three different gaps ranging from (I) 0.25-0.50 mm, (II) 0.50-0.70 mm and (III) 0.70-1.00 mm. The effect of a linear misalignment was also studied by applying a 0.75 mm misalignment (15% of the sheet thickness) during joint preparation. The result of this study showed that the LCW can easily sustain the gap and misalignment tolerances of 0.75 mm. The welded joint integrity with different gaps and misalignments was characterized in terms of the weld bead geometry, defects, macrostructure, hardness and tensile strength.
Date de publication
Maison d’éditionGerman Scientific Laser Society
Dans
  • Lasers in Manufacturing: LiM 2019.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCNRC-AST-009
Exporter la noticeExporter en format RIS
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Identificateur de l’enregistrementae2f213d-cebb-4973-923f-765dbec9e3a0
Enregistrement créé2019-07-17
Enregistrement modifié2020-06-03
Date de modification :