Journal
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A
Volume 40, Issue 10, Pages 901-906Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.3795/KSME-A.2016.40.10.901
Keywords
Butt Weld; Laser-arc Hybrid Welding; Welding Voltage; Pulse Correction
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The purpose of this study is to improve productivity by implementing one-pass full penetration welding using laser-arc hybrid welding for AH36. On increasing the thickness of the plate, a higher power of laser and arc was required to obtain full penetration. However, increasing the power of heat source caused undercut defects at both ends of the bead. This undercut was prevented by controlling the parameters of welding voltage and pulse correction. Hardness measurement and tensile test were conducted to apprehend the mechanical properties of weld. Also, by carrying out the microstructure observation for laser and arc regions, microstructural properties were understood.
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