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Temperature control of robotic friction stir welding using the thermoelectric effect
Högskolan Väst, Sweden.ORCID iD: 0000-0001-9553-7131
University West, Trollhättan, Sweden.ORCID iD: 0000-0002-1869-232X
Högskolan Väst, Sweden.ORCID iD: 0000-0001-5608-8636
2014 (English)In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 70, no 1-4, p. 375-383Article in journal (Refereed) Published
Abstract [en]

Friction stir welding (FSW) of non-linear joints receives an increasing interest from several industrial sectors like automotive, urban transport and aerospace. A force-controlled robot is particularly suitable for welding complex geometries in lightweight alloys. However, complex geometries including three-dimensional joints, non-constant thicknesses and heat sinks such as clamps cause varying heat dissipation in the welded product. This will lead to changes in the process temperature and hence an unstable FSW process with varying mechanical properties. Furthermore, overheating can lead to a meltdown, causing the tool to sink down into the workpiece. This paper describes a temperature controller that modifies the spindle speed to maintain a constant welding temperature. A newly developed temperature measurement method is used which is able to measure the average tool temperature without the need for thermocouples inside the tool. The method is used to control both the plunging and welding operation. The developments presented here are applied to a robotic FSW system and can be directly implemented in a production setting.

Place, publisher, year, edition, pages
Springer, 2014. Vol. 70, no 1-4, p. 375-383
Keywords [en]
Friction stir welding, FSW, Temperature control, Force control, Robotics, Process automation, WIL, Work-integrated learning
Keywords [sv]
AIL
National Category
Robotics Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Work Integrated Learning
Identifiers
URN: urn:nbn:se:lnu:diva-80686DOI: 10.1007/s00170-013-5279-0ISI: 000330220300032Scopus ID: 2-s2.0-84895929234OAI: oai:DiVA.org:lnu-80686DiVA, id: diva2:1290182
Available from: 2019-02-19 Created: 2019-02-19 Last updated: 2019-08-30Bibliographically approved

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Bolmsjö, Gunnar

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De Backer, JeroenBolmsjö, GunnarChristiansson, Anna-Karin
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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  • text
  • asciidoc
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