Laser Plasma Hybrid Welding of Austenitic Stainless Steels - Phenomena of Process Instability
- Laser plasma hybrid welding has been proved to be a very stable hybrid welding process and welds of high quality can be produced, especially if high surface quality and low spattering is demanded such as in welding fabrication of high alloyed austenitic stainless steels. In particular cases, even though welds display high outer quality, X-ray examinations revealed weld defects which may range from low porosity to blowhole-like cavities. The phenomena and the main influencing parameters such as arc current, welding speed and focal point position are discussed. Parameter fields will be suggested for welding plates of different austenitic stainless steel grades with thicknesses ranging from 3 to 8 mm. The results are based on welding experiments carried out using a 4.4 kW diode pumped Nd:YAGlaser. Thus, also the influence of the feeding fibre diameter has been investigated and it was found that the resulting beam shape has a major effect on the welding performance.
Autor*innen: | Karen Stelling, Marco Lammers, Andrey GumenyukORCiD, Thomas Böllinghaus, Michael RethmeierORCiD |
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Dokumenttyp: | Forschungsbericht |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | IIW Document |
Jahr der Erstveröffentlichung: | 2007 |
Verlag: | International Institute of Welding |
Verlagsort: | Paris |
Ausgabe/Heft: | IV-933-07 |
Erste Seite: | 1 |
Letzte Seite: | 14 |
Freie Schlagwörter: | Austenitic steel; Cavities; Hybrid welding; Laser; Plasma; Pores; Root dropping |
Veranstaltung: | 60th IIW Annual Assembly |
Veranstaltungsort: | Dubrovnik, Croatia |
Beginndatum der Veranstaltung: | 2007-07-01 |
Enddatum der Veranstaltung: | 2007-07-06 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |