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The stability of laser welding with an off-axis wire feed
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-7213-0002
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0003-4265-1541
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-3569-6795
2019 (English)In: Journal of Materials Processing Technology, ISSN 0924-0136, E-ISSN 1873-4774, Vol. 264, p. 84-90Article in journal (Refereed) Published
Abstract [en]

The concept using an off-axis filler wire during laser welding is introduced here in order to provide added process robustness considering gap width variations. Its stability is investigated with respect to gap width, welding speeds and powers. Geometry of the welds is analysed by tracing of weld cap edges and joint cross sections, connecting trends to weld parameters. High speed imaging and streak images are used to further study and describe sequences of events, including undercut formation. Formation of imperfections are found to be mainly correlated to wire feed position variations at the surface due to irregular melting of the wire tip.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 264, p. 84-90
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-70826DOI: 10.1016/j.jmatprotec.2018.09.003ISI: 000450135400009Scopus ID: 2-s2.0-85053062410OAI: oai:DiVA.org:ltu-70826DiVA, id: diva2:1247118
Note

Validerad;2018;Nivå 2;2018-09-21 (svasva)

Available from: 2018-09-11 Created: 2018-09-11 Last updated: 2019-04-24Bibliographically approved
In thesis
1. Phenomena in material addition to laser generated melt pools
Open this publication in new window or tab >>Phenomena in material addition to laser generated melt pools
2019 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2019
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
Keywords
laser metal deposition, additive manufacturing, laser welding, multi-material, high speed imaging, powder incorporation, off-axis wire feed, streak imaging, laser cladding, absorptivity
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
urn:nbn:se:ltu:diva-73754 (URN)978-91-7790-378-9 (ISBN)978-91-7790-379-6 (ISBN)
Presentation
2019-06-20, E632, lulea tekniska universitet, Lulea, 09:00 (English)
Opponent
Supervisors
Available from: 2019-04-25 Created: 2019-04-24 Last updated: 2019-06-05Bibliographically approved

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Frostevarg, JanKaplan, Alexander

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