Piott, Michael und Werber, Alexandra und Schleuss, Leander und Doynov, Nikolay und Ossenbrink, Ralf und Michailov, Vesselin G. (2020) A study of the heat transfer mechanism in resistance spot welding of aluminum alloys AA5182 and AA6014. International Journal of Advanced Manufacturing Technology (111), Seiten 263-271. Springer Nature. doi: 10.1007/s00170-020-05650-x. ISSN 0268-3768.
Dieses Archiv kann nicht den Volltext zur Verfügung stellen.
Kurzfassung
This work investigates heat transfer mechanism of aluminum resistance spot welding process. The main target is to determine thermal contact conductance and heat transfer coefficients for natural convection and thermal radiation at ambient air and forced convection inside the water-cooled electrodes. For this purpose, the heat transfer of hot sheets in a welding gun for aluminum alloys AA5182 and AA6014 is analyzed experimentally and numerically. The transient temperature field is measured by several thermocouples in a simplified experimental setup. Subsequent thermal-mechanical coupled finite element simulations of the experiments were used to calibrate the heat transfer coefficients. The heat transfer coefficient for natural convection and thermal radiation to ambient air is 13 W m2 K and the heat transfer coefficient for forced convection of electrode water-cooling is 25,000 W m2 K. The results indicate that the thermal contact conductance can be assumed ideal for welding process. Additionally, the finite element model is validated by the measured and calculated dissipated heat due to forced convection. Finally, a sensitivity analysis is performed to compare the influence of maximum and minimum heat transfer coefficients of forced convection (water-cooling) on transient temperature field and dissipated heat of sample AA5182.
elib-URL des Eintrags: | https://elib.dlr.de/139542/ | ||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | A study of the heat transfer mechanism in resistance spot welding of aluminum alloys AA5182 and AA6014 | ||||||||||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||||||||||
Datum: | 25 September 2020 | ||||||||||||||||||||||||||||
Erschienen in: | International Journal of Advanced Manufacturing Technology | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
DOI: | 10.1007/s00170-020-05650-x | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 263-271 | ||||||||||||||||||||||||||||
Verlag: | Springer Nature | ||||||||||||||||||||||||||||
Name der Reihe: | Springer Nature | ||||||||||||||||||||||||||||
ISSN: | 0268-3768 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Aluminum resistance spot welding, Heat transfer, FE simulation, Thermal contact conductance Electrode water-cooling | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||
HGF - Programm: | Energieeffizienz, Materialien und Ressourcen | ||||||||||||||||||||||||||||
HGF - Programmthema: | keine Zuordnung | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Dekarbonisierte Industrieprozesse (alt) | ||||||||||||||||||||||||||||
Standort: | Cottbus | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für CO2-arme Industrieprozesse | ||||||||||||||||||||||||||||
Hinterlegt von: | Klinkmüller, Maike | ||||||||||||||||||||||||||||
Hinterlegt am: | 04 Jan 2021 10:50 | ||||||||||||||||||||||||||||
Letzte Änderung: | 19 Feb 2021 13:24 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags