High surface quality welding of aluminum using adjustable ring-mode fiber laser

Martin Ruthandi Maina, Yasuhiro Okamoto, Akira Okada, Matti Närhi, Jarno Kangastupa, Jorma Vihinen


46 被引用数 (Scopus)


A method to improve penetration and stabilize the welding phenomenon at a high welding speed has been described through experimental and numerical investigations. Using a high power laser beam consisting of a center and a ring part, influences of shielding gas direction and flow rate, laser power density, and welding mode defined by variable intensity distribution have been clarified. The weld bead was evaluated in terms of width, height, shape and roughness. Dual-mode laser irradiation of center and ring power made it possible to stabilize the welding process. The center power helps to achieve sufficient deep penetration, while ring power ensures good temperature distribution. Good surface quality and deep penetration welding could be achieved with dual-mode welding, using low flow rate of shielding gas supplied from the backside direction.

ジャーナルJournal of Materials Processing Technology
出版ステータスPublished - 8月 2018

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • コンピュータ サイエンスの応用
  • 金属および合金
  • 産業および生産工学


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