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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)180-188
Number of pages9
JournalJournal of Materials Processing Technology
Volume258
DOIs
Publication statusPublished - Aug 1 2018

Fingerprint

Fiber lasers
Laser modes
Aluminum
Surface properties
Welding
Shielding
Gases
Flow rate
High power lasers
Laser beam effects
Laser beams
Welds
Temperature distribution
Surface roughness
Lasers

Keywords

  • Adjustable ring-mode fiber laser
  • Aluminum
  • Laser welding
  • Shielding gas
  • Surface quality

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

High surface quality welding of aluminum using adjustable ring-mode fiber laser. / Maina, Martin Ruthandi; Okamoto, Yasuhiro; Okada, Akira; Närhi, Matti; Kangastupa, Jarno; Vihinen, Jorma.

In: Journal of Materials Processing Technology, Vol. 258, 01.08.2018, p. 180-188.

Research output: Contribution to journalArticle

Maina, Martin Ruthandi ; Okamoto, Yasuhiro ; Okada, Akira ; Närhi, Matti ; Kangastupa, Jarno ; Vihinen, Jorma. / High surface quality welding of aluminum using adjustable ring-mode fiber laser. In: Journal of Materials Processing Technology. 2018 ; Vol. 258. pp. 180-188.
@article{cafc1661378e4a738409905dd79eff4d,
title = "High surface quality welding of aluminum using adjustable ring-mode fiber laser",
abstract = "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.",
keywords = "Adjustable ring-mode fiber laser, Aluminum, Laser welding, Shielding gas, Surface quality",
author = "Maina, {Martin Ruthandi} and Yasuhiro Okamoto and Akira Okada and Matti N{\"a}rhi and Jarno Kangastupa and Jorma Vihinen",
year = "2018",
month = "8",
day = "1",
doi = "10.1016/j.jmatprotec.2018.03.030",
language = "English",
volume = "258",
pages = "180--188",
journal = "Journal of Materials Processing Technology",
issn = "0924-0136",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - High surface quality welding of aluminum using adjustable ring-mode fiber laser

AU - Maina, Martin Ruthandi

AU - Okamoto, Yasuhiro

AU - Okada, Akira

AU - Närhi, Matti

AU - Kangastupa, Jarno

AU - Vihinen, Jorma

PY - 2018/8/1

Y1 - 2018/8/1

N2 - 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.

AB - 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.

KW - Adjustable ring-mode fiber laser

KW - Aluminum

KW - Laser welding

KW - Shielding gas

KW - Surface quality

UR - http://www.scopus.com/inward/record.url?scp=85044959061&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044959061&partnerID=8YFLogxK

U2 - 10.1016/j.jmatprotec.2018.03.030

DO - 10.1016/j.jmatprotec.2018.03.030

M3 - Article

AN - SCOPUS:85044959061

VL - 258

SP - 180

EP - 188

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

SN - 0924-0136

ER -