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Laser hybrid welding of alsi coated boron steel
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
Swerea KIMAB AB, Joining Technology Centre.
Swerea KIMAB AB, Joining Technology Centre.
2013 (English)In: 14th NOLAMP Conference: The 14th Nordic Laser Materials Processing Conference, August 26th – 28th 2013, Gothenburg, Sweden / [ed] Alexander Kaplan; Hans Engström, Luleå: Luleå tekniska universitet, 2013, p. 59-66Conference paper, Published paper (Other academic)
Abstract [en]

Several publications in the literature are stating that welding of AlSi coated boron steelwithout any pre-treatment often results in reduced weld strength and generally make the jointmore brittle. These problems are normally solved by locally removing the AlSi coating in aseparated process step before welding.One of the main goals of the experiments here presented was to join tailor weldedblanks (TWB) using only one process step without locally removing the AlSi coating and stillachieve the required weld strength needed for subsequent forming operations and good crashperformance.Laser-hybrid welding, a mixture of laser and MAG welding, were used for welding ofTWB’sThe experiments showed that correctly used, laser-hybrid can achieve welds in Usibor1500P materials that reach 95% of the strength of welds made on uncoated 22MnB5materials, in one process step without locally removing the AlSi coating.Optimized laser-hybrid welds were also tested on full scale B-pillars where theyperformed as good as conventionally laser-welded B-pillars (with coating removal) and nonweldedB-pillars. All welds were intact after both static and crash testing.In all, the experiments has successfully gathered knowledge on the determining factorsfor a sturdy process with high weld quality, approved crash performance, and improvedproductivity.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2013. p. 59-66
National Category
Manufacturing, Surface and Joining Technology
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-35060Local ID: 9710dcb6-c362-4e1c-82ed-5f7b18e01e4dISBN: 978-91-7439-688-1 (print)ISBN: 978-91-7439-689-8 (print)OAI: oai:DiVA.org:ltu-35060DiVA, id: diva2:1008312
Conference
Nordic Laser Materials Processing Conference : 26/08/2013 - 28/08/2013
Note
Godkänd; 2013; 20131210 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2023-09-06Bibliographically approved

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Wiklund, Greger

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