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Analysis of the rapid central melt pool flow in hybrid laser-arc welding
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
2012 (English)In: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 39, 853-862 p.Article in journal (Refereed) Published
Abstract [en]

Hybrid laser arc welding creates a long weld pool tail. By high speed imaging the melt velocity behind the keyhole was measured to be very high, of the order of meters per second. Fluid dynamics simulation was carried out locally in the central axial plane of the pool tail. The high speed melt layer redistributes its momentum to slow movement of the deeper bulk. The consequences of initially high melt speed and its mass flow redistribution on the formation of the central reinforcement peak are discussed.

Place, publisher, year, edition, pages
2012. Vol. 39, 853-862 p.
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-38968DOI: 10.1016/j.phpro.2012.10.110Local ID: d8907cf9-7f44-424f-a4f8-ac83f171db49OAI: oai:DiVA.org:ltu-38968DiVA: diva2:1012476
Conference
Laser Assisted Net Shape Engineering : 12/11/2012 - 15/11/2012
Note
Validerad; 2012; 20121112 (andbra); Konferensartikel i tidskriftAvailable from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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