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 language | English |
|---|---|
| Pages (from-to) | 180-188 |
| Number of pages | 9 |
| Journal | Journal of Materials Processing Technology |
| Volume | 258 |
| DOIs | |
| Publication status | Published - Aug 1 2018 |
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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 journal › Article
}
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
VL - 258
SP - 180
EP - 188
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
SN - 0924-0136
ER -