Welding experiments using laser-GMA hybrid welding of lap joint between 6.5 mm thick direct quenched Ramor 500 grade protection steel and 2 mm thick Optim 500 MC construction steel plates were carried out. The filler materials used were Union Thermanit X96 and Esab OK Autrod AISI 316LSi wire. Direct quenched Ramor 500 grade steel can be used e.g. as an armour plating applications because it possess excellent ballistic properties combined with high strength and hardness [1]. However, joining of above material by welding can be challenging because of local softening at heat affected zone regions. The aim was to evaluate feasibility of hybrid welding process in joining point of view and to evaluate base and filler material weldability concerning e.g. hardness distribution across the weld cross-section. Also dilution assessments were made using EDS measurements in order to reveal how base and filler material is distributed across the weld cross-section.
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ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
September 23–27, 2012
Anaheim, California, USA
ISBN:
978-0-912035-96-3
PROCEEDINGS PAPER
Laser-GMA hybrid welding of direct quenched steel in lap joint configuration - A preliminary study
Miikka Karhu;
Miikka Karhu
1
VTT - Technical Research Centre of Finland
, Lappeenranta, Finland
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Veli Kujanpää;
Veli Kujanpää
1
VTT - Technical Research Centre of Finland
, Lappeenranta, Finland
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Kalervo Leino;
Kalervo Leino
1
VTT - Technical Research Centre of Finland
, Lappeenranta, Finland
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Jukka Siltanen
Jukka Siltanen
2
Rautaruukki Oyj
, Corporate Functions, Hämeenlinna, Finland
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Published Online:
September 01 2012
Citation
Miikka Karhu, Veli Kujanpää, Kalervo Leino, Jukka Siltanen; September 23–27, 2012. "Laser-GMA hybrid welding of direct quenched steel in lap joint configuration - A preliminary study." Proceedings of the ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Anaheim, California, USA. (pp. pp. 486-493). ASME. https://doi.org/10.2351/1.5062497
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