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http://dx.doi.org/10.5762/KAIS.2013.14.2.535

Effect of Welding Parameters on Bead Shape, Microstructure and Hardness of Galvanized Steel Pipe Welds with GMAW  

Lim, Young-Min (School of Energy.Materials·Chemical, Korea University of Technology and Education)
Lee, Wan Kyu (Korea Association of Machinery Industry)
Kim, Se-Cheol (Korea Specialty Contractor Financial Cooperative)
Koh, Jin-Hyun (School of Energy.Materials·Chemical, Korea University of Technology and Education)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.2, 2013 , pp. 535-541 More about this Journal
Abstract
The present study was carried out to investigate the effects of welding parameters such as current, voltage and shielding gases on the bead shape, microstructures and hardness. It was confirmed that bead height was lowered and bead depth was increased with increasing voltages while height, depth and width of beads increased with welding currents. The hardness of weld metals with Ar+10% $O_2$ and Ar+20% $CO_2$ was low due to the formation of grain boundary and polygonal ferrites while that of weld metals with Ar+2% $O_2$ was high due to the presence of acicular, bainitic and sideplate ferrites.
Keywords
Zinc coated steel pipes; Welding parameter; Bead shape; Shielding gas;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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