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The effect of process speed on energy redistribution in deep penetration CO2 laser welding
Luleå tekniska universitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.ORCID iD: 0000-0002-3569-6795
Luleå University of Technology, Department of Engineering Sciences and Mathematics.
2000 (English)In: High Temperature Material Processes, ISSN 1093-3611, E-ISSN 1940-4360, Vol. 4, no 2, p. 213-225Article in journal (Refereed) Published
Abstract [en]

This work discusses energy absorption mechanisms in CO2 laser welding and how they are affected by changes in the process speed. Two main energy absorption processes govern the welding interaction: 1. Fresnel absorption at the keyhole walls. 2. Absorption by the partially ionised metal vapour (or plasma) in the keyhole (laser energy absorbed in this way is re-radiated or conducted to the keyhole walls). A theoretical model of these absorption mechanisms has been developed and shown to agree closely with experimental results. Fresnel absorption has been identified as being dominant over plasma absorption and becomes even more influential as welding speeds are increased

Place, publisher, year, edition, pages
2000. Vol. 4, no 2, p. 213-225
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-2700Local ID: 060c17e0-dc28-11db-b67f-000ea68e967bOAI: oai:DiVA.org:ltu-2700DiVA, id: diva2:975553
Note
Validerad; 2000; 20070327 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Kaplan, AlexanderMagnusson, ClaesPowell, John

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