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Measuring the Melt Flow on the Laser Cut Front
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0001-6261-2019
Fraunhofer ILT, Steinbachstr. 15, Aachen.
Bystronic Laser AG, Industriestr. 21, Niederönz.
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2015 (English)In: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 78, p. 99-109Article in journal (Refereed) Published
Abstract [en]

The flow characteristics on the laser cut front for 10 mm stainless steel AISI 304 (EN 1.4301) are studied in this paper using High Speed Imaging (HSI). The laser cut samples were produced with a 6 kW fiber laser with nitrogen gas assist. Previous work in this field has used unusual cutting parameters to make the experimentation easier. This work presents, for the first time, HSI results from standard commercially viable cutting parameters. This was made possible by the development of a new experimental technique. The results presented here suggest that the cut front produced when cutting stainless steel with a fiber laser and a nitrogen assist gas is covered in bumps which themselves are covered in a thin layer of liquid. Under the conditions shown here the bumps move down the cut front at an average speed of approximately 0.4m/s. The liquid flows at an average speed of approximately 1.1m/s. The average melt depth at the bottom of the cut zone under these conditions is approximately 0.17 mm.

Place, publisher, year, edition, pages
2015. Vol. 78, p. 99-109
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-30740DOI: 10.1016/j.phpro.2015.11.022ISI: 000370876600011Scopus ID: 2-s2.0-84965050315Local ID: 4a83279a-0219-412a-9ca9-5fc4016ce67eOAI: oai:DiVA.org:ltu-30740DiVA, id: diva2:1003969
Conference
Nordic Laser Materials Processing Conference : 25/08/2015 - 27/08/2015
Note
Validerad; 2015; Nivå 1; 20151126 (andbra); Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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Pocorni, JetroPowell, JohnKaplan, Alexander

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