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Laser-induced boiling and melt transfer from a metal edge
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-4569-8970
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

The characterization of  the resultant melt ejection when machining the edge of plate using laser beam during laser remote fusion cutting was first presented and investigated in this this approach. The ejection mode shows a weaker with different drops ejection direction and even slower when it is compare to pushing mode that taken place during cutting through the plate. The departure melt when exit the lower edge of the front exhibit a significant tendency to deviate towards the processed waste sheet, extended in liquid column that later separated to of a relatively large discrete droplets flowing downward. The behavior is not continuous and regular in its manner, instead it switch from time to time to get attach and bridge to the lower edge of the machined surface to developed a dross formation .The melt ejection is accompanied with higher random very smaller flying drops. A considerable part of the melt move sideward from the boiling front was clearly noticeable, subscribe in generating a very rough surface with different coarse striation patterns along the machined surface. Secondly, the investment of the fallen hot molten droplets to involve for a new variant manufacturing was also considered. The deposition on the substrate enhances tracking the degree of the ejection deviation, but also the deposition domain. Ramp the power help to explore the uniformity and resolution of the clad configuration. High speed imaging was used as tool to conduct the qualitative and quantitative analysis, the measurement of the ejection orientation register 26 degree to the right with the respect to the vertical from the front observation, while from the side covers only 7 degree to the left in the direction of machining speed. Ejection mode during cutting keep more precisely with a narrow spreading of scattering the angle from its average in compare to the produced one during machining the edge.

Keyword [en]
Additive manufacturing, Droplets ejection, High speed Imaging, edge machining, Deposition
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-64442OAI: oai:DiVA.org:ltu-64442DiVA: diva2:1114538
Note

In the thesis

Interaction mechanisms for a laser-induced metallic boilling front

Available from: 2017-06-24 Created: 2017-06-24 Last updated: 2017-06-26

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf