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Using laser cutting as a source of molten droplets for additive manufacturing: A new recycling technique
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development. University of Mosul, College of Engineering, Department of Mechanical Engineering.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
2017 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 125, 76-84 p.Article in journal (Refereed) Published
Abstract [en]

A new variant of additive manufacturing is proposed which involves transferring molten droplets via a laser beam to a substrate. The droplets are generated by laser remote fusion cutting of a supply sheet that could be a waste material, for recycling purposes. The laser-induced ablation pressure at the cutting front continuously drives melt downwards below the supply sheet in the form of a liquid column. Droplets separate from the column and solidify as a track on a substrate below. The droplets, surrounded by vapour, had in this case an average diameter of 500 μm and a speed of 2 m/s, with deviations up to 50%. Sound clad tracks were generated on steel and aluminium substrates. In the case of a copper substrate discontinuous clad tracks were produced as a result of poor wetting. The droplet jet had a small divergence of about 5°, which is suitable for controlled deposition. The transmitted part of the laser beam interacted with the clad track but did not affect the process result. High speed imaging was found to be a suitable tool for qualitative and quantitative analysis of the technique.

Place, publisher, year, edition, pages
2017. Vol. 125, 76-84 p.
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-62854DOI: 10.1016/j.matdes.2017.03.080ScopusID: 2-s2.0-85016979838OAI: oai:DiVA.org:ltu-62854DiVA: diva2:1086501
Note

Validerad; 2017; Nivå 2; 2017-04-07 (rokbeg)

Available from: 2017-04-03 Created: 2017-04-03 Last updated: 2017-04-19Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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