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Correlation between laser welding sequence and distortions for thin sheet structures
University West, Department of Engineering Science, Research Enviroment Production Technology West. Swerea KIMAB in Kista. (PTW)ORCID iD: 0000-0001-8933-6720
Volvo Cars in Torslanda & KTH in Stockholm, Sweden.
Swerea KIMAB in Kista, Sweden.
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0001-8822-2705
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2017 (English)In: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936, Vol. 22, no 2, 150-156 p.Article in journal (Refereed) PublishedText
Abstract [en]

Thin ultra-high strength steel shaped as 700 mm long U-beams have been laser welded in overlap configuration to study the influence of welding sequence on distortions. Three different welding directions, three different energy inputs as well as stitch welding have been evaluated, using resistance spot welding (RSW) as a reference. Transverse widening at the ends and narrowing at the centre of the beam were measured. A clear correlation was found between the weld metal volume and distortion. For continuous welds there was also a nearly linear relationship between the energy input and distortion. However, the amount of distortion was not affected by a change in welding direction. Stitching and RSW reduced distortion significantly compared to continuous laser welding.

Place, publisher, year, edition, pages
2017. Vol. 22, no 2, 150-156 p.
Keyword [en]
Automotive, Distortion, High strength steel, Laser welding, Welding sequence
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology; ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-9678DOI: 10.1080/13621718.2016.1207046ScopusID: 2-s2.0-84978705979OAI: oai:DiVA.org:hv-9678DiVA: diva2:1057125
Available from: 2016-12-16 Created: 2016-08-10 Last updated: 2017-01-12Bibliographically approved

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Fahlström, KarlKarlsson, LeifSvensson, Lars-Erik
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Research Enviroment Production Technology WestDivision of Welding Technology
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Science and technology of welding and joining
Manufacturing, Surface and Joining Technology

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