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Laser welding head tailored to tube-sheet joint requirements for heat exchangers manufacturing

 
: Vandewynckéle, Ambroise; Vaamonde, Eva; Fontán, Marcos; Herwig, Patrick; Mascioletti, Alessandro

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Postprint (PDF; )

Emmelmann, C. ; Wissenschaftliche Gesellschaft Lasertechnik -WLT-:
LiM 2013, Lasers in Manufacturing. Seventh International WLT Conference on Lasers in Manufacturing. Proceedings : Munich, Germany, May 13-16, 2013
Amsterdam: Elsevier, 2013 (Physics Procedia 41.2013)
ISSN: 1875-3892
S.144-152
International Conference on Lasers in Manufacturing (LiM) <7, 2013, Munich>
Englisch
Konferenzbeitrag, Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IWS ()
laser welding; orbital welding; welding head design

Abstract
Tube to tube-sheet joints in heat exchangers are currently welded by the orbital TIG process characterized by very high quality of the weld beads and good repeatability. However, due to high number of welds, a reduction in the welding cycle time would have an interesting impact on manufacturing costs and delays and laser welding technology is aimed to improve this factor. The main disadvantage is the positioning accuracy required by the laser welding process since beam deviations from real joint cause lack of penetration. It is expected that the Orbital laser welding head developed under the European project ORBITAL will avoid this drawback.

: http://publica.fraunhofer.de/dokumente/N-298303.html